forked from GNUsocial/gnu-social
		
	
		
			
				
	
	
		
			884 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			884 lines
		
	
	
		
			26 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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 * The PEAR DB driver for PHP's odbc extension
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 * for interacting with databases via ODBC connections
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 *
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 * PHP versions 4 and 5
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 *
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 * LICENSE: This source file is subject to version 3.0 of the PHP license
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 * that is available through the world-wide-web at the following URI:
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 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
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 * the PHP License and are unable to obtain it through the web, please
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 * send a note to license@php.net so we can mail you a copy immediately.
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 *
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 * @category   Database
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 * @package    DB
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 * @author     Stig Bakken <ssb@php.net>
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 * @author     Daniel Convissor <danielc@php.net>
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 * @copyright  1997-2007 The PHP Group
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 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
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 * @version    CVS: $Id: odbc.php,v 1.81 2007/07/06 05:19:21 aharvey Exp $
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 * @link       http://pear.php.net/package/DB
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 */
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/**
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 * Obtain the DB_common class so it can be extended from
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 */
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require_once 'DB/common.php';
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/**
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 * The methods PEAR DB uses to interact with PHP's odbc extension
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 * for interacting with databases via ODBC connections
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 *
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 * These methods overload the ones declared in DB_common.
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 *
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 * More info on ODBC errors could be found here:
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 * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/trblsql/tr_err_odbc_5stz.asp
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 *
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 * @category   Database
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 * @package    DB
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 * @author     Stig Bakken <ssb@php.net>
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 * @author     Daniel Convissor <danielc@php.net>
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 * @copyright  1997-2007 The PHP Group
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 * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
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 * @version    Release: 1.7.14RC1
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 * @link       http://pear.php.net/package/DB
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 */
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class DB_odbc extends DB_common
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{
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    // {{{ properties
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    /**
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     * The DB driver type (mysql, oci8, odbc, etc.)
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     * @var string
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     */
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    var $phptype = 'odbc';
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    /**
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     * The database syntax variant to be used (db2, access, etc.), if any
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     * @var string
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     */
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    var $dbsyntax = 'sql92';
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    /**
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     * The capabilities of this DB implementation
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     *
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     * The 'new_link' element contains the PHP version that first provided
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     * new_link support for this DBMS.  Contains false if it's unsupported.
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     *
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     * Meaning of the 'limit' element:
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     *   + 'emulate' = emulate with fetch row by number
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     *   + 'alter'   = alter the query
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     *   + false     = skip rows
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     *
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     * NOTE: The feature set of the following drivers are different than
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     * the default:
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     *   + solid: 'transactions' = true
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     *   + navision: 'limit' = false
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     *
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     * @var array
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     */
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    var $features = array(
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        'limit'         => 'emulate',
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        'new_link'      => false,
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        'numrows'       => true,
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        'pconnect'      => true,
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        'prepare'       => false,
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        'ssl'           => false,
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        'transactions'  => false,
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    );
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    /**
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     * A mapping of native error codes to DB error codes
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     * @var array
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     */
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    var $errorcode_map = array(
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        '01004' => DB_ERROR_TRUNCATED,
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        '07001' => DB_ERROR_MISMATCH,
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        '21S01' => DB_ERROR_VALUE_COUNT_ON_ROW,
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        '21S02' => DB_ERROR_MISMATCH,
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        '22001' => DB_ERROR_INVALID,
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        '22003' => DB_ERROR_INVALID_NUMBER,
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        '22005' => DB_ERROR_INVALID_NUMBER,
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        '22008' => DB_ERROR_INVALID_DATE,
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        '22012' => DB_ERROR_DIVZERO,
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        '23000' => DB_ERROR_CONSTRAINT,
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        '23502' => DB_ERROR_CONSTRAINT_NOT_NULL,
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        '23503' => DB_ERROR_CONSTRAINT,
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        '23504' => DB_ERROR_CONSTRAINT,
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        '23505' => DB_ERROR_CONSTRAINT,
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        '24000' => DB_ERROR_INVALID,
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        '34000' => DB_ERROR_INVALID,
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        '37000' => DB_ERROR_SYNTAX,
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        '42000' => DB_ERROR_SYNTAX,
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        '42601' => DB_ERROR_SYNTAX,
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        'IM001' => DB_ERROR_UNSUPPORTED,
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        'S0000' => DB_ERROR_NOSUCHTABLE,
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        'S0001' => DB_ERROR_ALREADY_EXISTS,
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        'S0002' => DB_ERROR_NOSUCHTABLE,
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        'S0011' => DB_ERROR_ALREADY_EXISTS,
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        'S0012' => DB_ERROR_NOT_FOUND,
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        'S0021' => DB_ERROR_ALREADY_EXISTS,
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        'S0022' => DB_ERROR_NOSUCHFIELD,
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        'S1009' => DB_ERROR_INVALID,
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        'S1090' => DB_ERROR_INVALID,
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        'S1C00' => DB_ERROR_NOT_CAPABLE,
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    );
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    /**
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     * The raw database connection created by PHP
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     * @var resource
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     */
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    var $connection;
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    /**
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     * The DSN information for connecting to a database
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     * @var array
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     */
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    var $dsn = array();
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    /**
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     * The number of rows affected by a data manipulation query
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     * @var integer
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     * @access private
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     */
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    var $affected = 0;
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    // }}}
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    // {{{ constructor
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    /**
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     * This constructor calls <kbd>$this->DB_common()</kbd>
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     *
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     * @return void
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     */
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    function DB_odbc()
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    {
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        $this->DB_common();
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    }
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    // }}}
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    // {{{ connect()
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    /**
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     * Connect to the database server, log in and open the database
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     *
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     * Don't call this method directly.  Use DB::connect() instead.
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     *
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     * PEAR DB's odbc driver supports the following extra DSN options:
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     *   + cursor  The type of cursor to be used for this connection.
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     *
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     * @param array $dsn         the data source name
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     * @param bool  $persistent  should the connection be persistent?
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     *
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     * @return int  DB_OK on success. A DB_Error object on failure.
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     */
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    function connect($dsn, $persistent = false)
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    {
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        if (!PEAR::loadExtension('odbc')) {
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            return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
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        }
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        $this->dsn = $dsn;
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        if ($dsn['dbsyntax']) {
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            $this->dbsyntax = $dsn['dbsyntax'];
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        }
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        switch ($this->dbsyntax) {
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            case 'access':
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            case 'db2':
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            case 'solid':
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                $this->features['transactions'] = true;
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                break;
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            case 'navision':
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                $this->features['limit'] = false;
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        }
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        /*
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         * This is hear for backwards compatibility. Should have been using
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         * 'database' all along, but prior to 1.6.0RC3 'hostspec' was used.
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         */
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        if ($dsn['database']) {
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            $odbcdsn = $dsn['database'];
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        } elseif ($dsn['hostspec']) {
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            $odbcdsn = $dsn['hostspec'];
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        } else {
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            $odbcdsn = 'localhost';
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        }
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        $connect_function = $persistent ? 'odbc_pconnect' : 'odbc_connect';
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        if (empty($dsn['cursor'])) {
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            $this->connection = @$connect_function($odbcdsn, $dsn['username'],
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                                                   $dsn['password']);
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        } else {
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            $this->connection = @$connect_function($odbcdsn, $dsn['username'],
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                                                   $dsn['password'],
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                                                   $dsn['cursor']);
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        }
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        if (!is_resource($this->connection)) {
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            return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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                                     null, null, null,
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                                     $this->errorNative());
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        }
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        return DB_OK;
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    }
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    // }}}
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    // {{{ disconnect()
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    /**
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     * Disconnects from the database server
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     *
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     * @return bool  TRUE on success, FALSE on failure
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     */
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    function disconnect()
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    {
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        $err = @odbc_close($this->connection);
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        $this->connection = null;
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        return $err;
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    }
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    // }}}
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    // {{{ simpleQuery()
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    /**
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     * Sends a query to the database server
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     *
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     * @param string  the SQL query string
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     *
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     * @return mixed  + a PHP result resrouce for successful SELECT queries
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     *                + the DB_OK constant for other successful queries
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     *                + a DB_Error object on failure
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     */
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    function simpleQuery($query)
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    {
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        $this->last_query = $query;
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        $query = $this->modifyQuery($query);
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        $result = @odbc_exec($this->connection, $query);
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        if (!$result) {
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            return $this->odbcRaiseError(); // XXX ERRORMSG
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        }
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        // Determine which queries that should return data, and which
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        // should return an error code only.
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        if ($this->_checkManip($query)) {
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            $this->affected = $result; // For affectedRows()
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            return DB_OK;
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        }
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        $this->affected = 0;
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        return $result;
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    }
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    // }}}
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    // {{{ nextResult()
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    /**
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     * Move the internal odbc result pointer to the next available result
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     *
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     * @param a valid fbsql result resource
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     *
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     * @access public
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     *
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     * @return true if a result is available otherwise return false
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     */
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    function nextResult($result)
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    {
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        return @odbc_next_result($result);
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    }
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    // }}}
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    // {{{ fetchInto()
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    /**
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     * Places a row from the result set into the given array
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     *
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     * Formating of the array and the data therein are configurable.
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     * See DB_result::fetchInto() for more information.
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     *
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     * This method is not meant to be called directly.  Use
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     * DB_result::fetchInto() instead.  It can't be declared "protected"
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     * because DB_result is a separate object.
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     *
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     * @param resource $result    the query result resource
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     * @param array    $arr       the referenced array to put the data in
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     * @param int      $fetchmode how the resulting array should be indexed
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     * @param int      $rownum    the row number to fetch (0 = first row)
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     *
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     * @return mixed  DB_OK on success, NULL when the end of a result set is
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     *                 reached or on failure
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     *
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     * @see DB_result::fetchInto()
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     */
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    function fetchInto($result, &$arr, $fetchmode, $rownum = null)
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    {
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        $arr = array();
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        if ($rownum !== null) {
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            $rownum++; // ODBC first row is 1
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            if (version_compare(phpversion(), '4.2.0', 'ge')) {
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                $cols = @odbc_fetch_into($result, $arr, $rownum);
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            } else {
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                $cols = @odbc_fetch_into($result, $rownum, $arr);
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            }
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        } else {
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            $cols = @odbc_fetch_into($result, $arr);
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        }
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        if (!$cols) {
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            return null;
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        }
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        if ($fetchmode !== DB_FETCHMODE_ORDERED) {
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            for ($i = 0; $i < count($arr); $i++) {
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                $colName = @odbc_field_name($result, $i+1);
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                $a[$colName] = $arr[$i];
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            }
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            if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
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                $a = array_change_key_case($a, CASE_LOWER);
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            }
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            $arr = $a;
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        }
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        if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
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            $this->_rtrimArrayValues($arr);
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        }
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        if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
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            $this->_convertNullArrayValuesToEmpty($arr);
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        }
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        return DB_OK;
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    }
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    // }}}
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    // {{{ freeResult()
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    /**
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     * Deletes the result set and frees the memory occupied by the result set
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     *
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     * This method is not meant to be called directly.  Use
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     * DB_result::free() instead.  It can't be declared "protected"
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     * because DB_result is a separate object.
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     *
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     * @param resource $result  PHP's query result resource
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     *
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     * @return bool  TRUE on success, FALSE if $result is invalid
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     *
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     * @see DB_result::free()
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     */
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    function freeResult($result)
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    {
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        return is_resource($result) ? odbc_free_result($result) : false;
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    }
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    // }}}
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    // {{{ numCols()
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    /**
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     * Gets the number of columns in a result set
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     *
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     * This method is not meant to be called directly.  Use
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     * DB_result::numCols() instead.  It can't be declared "protected"
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     * because DB_result is a separate object.
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     *
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     * @param resource $result  PHP's query result resource
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     *
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     * @return int  the number of columns.  A DB_Error object on failure.
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     *
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     * @see DB_result::numCols()
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     */
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    function numCols($result)
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    {
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        $cols = @odbc_num_fields($result);
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        if (!$cols) {
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            return $this->odbcRaiseError();
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        }
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        return $cols;
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    }
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    // }}}
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    // {{{ affectedRows()
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    /**
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     * Determines the number of rows affected by a data maniuplation query
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     *
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     * 0 is returned for queries that don't manipulate data.
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     *
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     * @return int  the number of rows.  A DB_Error object on failure.
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     */
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    function affectedRows()
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    {
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        if (empty($this->affected)) {  // In case of SELECT stms
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            return 0;
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        }
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        $nrows = @odbc_num_rows($this->affected);
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        if ($nrows == -1) {
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            return $this->odbcRaiseError();
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        }
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        return $nrows;
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    }
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    // }}}
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    // {{{ numRows()
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    /**
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     * Gets the number of rows in a result set
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     *
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     * Not all ODBC drivers support this functionality.  If they don't
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     * a DB_Error object for DB_ERROR_UNSUPPORTED is returned.
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     *
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     * This method is not meant to be called directly.  Use
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     * DB_result::numRows() instead.  It can't be declared "protected"
 | 
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     * because DB_result is a separate object.
 | 
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     *
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     * @param resource $result  PHP's query result resource
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     *
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     * @return int  the number of rows.  A DB_Error object on failure.
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     *
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     * @see DB_result::numRows()
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     */
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    function numRows($result)
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    {
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        $nrows = @odbc_num_rows($result);
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        if ($nrows == -1) {
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            return $this->odbcRaiseError(DB_ERROR_UNSUPPORTED);
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        }
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        if ($nrows === false) {
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            return $this->odbcRaiseError();
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        }
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        return $nrows;
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    }
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						|
    // }}}
 | 
						|
    // {{{ quoteIdentifier()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Quotes a string so it can be safely used as a table or column name
 | 
						|
     *
 | 
						|
     * Use 'mssql' as the dbsyntax in the DB DSN only if you've unchecked
 | 
						|
     * "Use ANSI quoted identifiers" when setting up the ODBC data source.
 | 
						|
     *
 | 
						|
     * @param string $str  identifier name to be quoted
 | 
						|
     *
 | 
						|
     * @return string  quoted identifier string
 | 
						|
     *
 | 
						|
     * @see DB_common::quoteIdentifier()
 | 
						|
     * @since Method available since Release 1.6.0
 | 
						|
     */
 | 
						|
    function quoteIdentifier($str)
 | 
						|
    {
 | 
						|
        switch ($this->dsn['dbsyntax']) {
 | 
						|
            case 'access':
 | 
						|
                return '[' . $str . ']';
 | 
						|
            case 'mssql':
 | 
						|
            case 'sybase':
 | 
						|
                return '[' . str_replace(']', ']]', $str) . ']';
 | 
						|
            case 'mysql':
 | 
						|
            case 'mysqli':
 | 
						|
                return '`' . $str . '`';
 | 
						|
            default:
 | 
						|
                return '"' . str_replace('"', '""', $str) . '"';
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ quote()
 | 
						|
 | 
						|
    /**
 | 
						|
     * @deprecated  Deprecated in release 1.6.0
 | 
						|
     * @internal
 | 
						|
     */
 | 
						|
    function quote($str)
 | 
						|
    {
 | 
						|
        return $this->quoteSmart($str);
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ nextId()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Returns the next free id in a sequence
 | 
						|
     *
 | 
						|
     * @param string  $seq_name  name of the sequence
 | 
						|
     * @param boolean $ondemand  when true, the seqence is automatically
 | 
						|
     *                            created if it does not exist
 | 
						|
     *
 | 
						|
     * @return int  the next id number in the sequence.
 | 
						|
     *               A DB_Error object on failure.
 | 
						|
     *
 | 
						|
     * @see DB_common::nextID(), DB_common::getSequenceName(),
 | 
						|
     *      DB_odbc::createSequence(), DB_odbc::dropSequence()
 | 
						|
     */
 | 
						|
    function nextId($seq_name, $ondemand = true)
 | 
						|
    {
 | 
						|
        $seqname = $this->getSequenceName($seq_name);
 | 
						|
        $repeat = 0;
 | 
						|
        do {
 | 
						|
            $this->pushErrorHandling(PEAR_ERROR_RETURN);
 | 
						|
            $result = $this->query("update ${seqname} set id = id + 1");
 | 
						|
            $this->popErrorHandling();
 | 
						|
            if ($ondemand && DB::isError($result) &&
 | 
						|
                $result->getCode() == DB_ERROR_NOSUCHTABLE) {
 | 
						|
                $repeat = 1;
 | 
						|
                $this->pushErrorHandling(PEAR_ERROR_RETURN);
 | 
						|
                $result = $this->createSequence($seq_name);
 | 
						|
                $this->popErrorHandling();
 | 
						|
                if (DB::isError($result)) {
 | 
						|
                    return $this->raiseError($result);
 | 
						|
                }
 | 
						|
                $result = $this->query("insert into ${seqname} (id) values(0)");
 | 
						|
            } else {
 | 
						|
                $repeat = 0;
 | 
						|
            }
 | 
						|
        } while ($repeat);
 | 
						|
 | 
						|
        if (DB::isError($result)) {
 | 
						|
            return $this->raiseError($result);
 | 
						|
        }
 | 
						|
 | 
						|
        $result = $this->query("select id from ${seqname}");
 | 
						|
        if (DB::isError($result)) {
 | 
						|
            return $result;
 | 
						|
        }
 | 
						|
 | 
						|
        $row = $result->fetchRow(DB_FETCHMODE_ORDERED);
 | 
						|
        if (DB::isError($row || !$row)) {
 | 
						|
            return $row;
 | 
						|
        }
 | 
						|
 | 
						|
        return $row[0];
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Creates a new sequence
 | 
						|
     *
 | 
						|
     * @param string $seq_name  name of the new sequence
 | 
						|
     *
 | 
						|
     * @return int  DB_OK on success.  A DB_Error object on failure.
 | 
						|
     *
 | 
						|
     * @see DB_common::createSequence(), DB_common::getSequenceName(),
 | 
						|
     *      DB_odbc::nextID(), DB_odbc::dropSequence()
 | 
						|
     */
 | 
						|
    function createSequence($seq_name)
 | 
						|
    {
 | 
						|
        return $this->query('CREATE TABLE '
 | 
						|
                            . $this->getSequenceName($seq_name)
 | 
						|
                            . ' (id integer NOT NULL,'
 | 
						|
                            . ' PRIMARY KEY(id))');
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ dropSequence()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Deletes a sequence
 | 
						|
     *
 | 
						|
     * @param string $seq_name  name of the sequence to be deleted
 | 
						|
     *
 | 
						|
     * @return int  DB_OK on success.  A DB_Error object on failure.
 | 
						|
     *
 | 
						|
     * @see DB_common::dropSequence(), DB_common::getSequenceName(),
 | 
						|
     *      DB_odbc::nextID(), DB_odbc::createSequence()
 | 
						|
     */
 | 
						|
    function dropSequence($seq_name)
 | 
						|
    {
 | 
						|
        return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ autoCommit()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Enables or disables automatic commits
 | 
						|
     *
 | 
						|
     * @param bool $onoff  true turns it on, false turns it off
 | 
						|
     *
 | 
						|
     * @return int  DB_OK on success.  A DB_Error object if the driver
 | 
						|
     *               doesn't support auto-committing transactions.
 | 
						|
     */
 | 
						|
    function autoCommit($onoff = false)
 | 
						|
    {
 | 
						|
        if (!@odbc_autocommit($this->connection, $onoff)) {
 | 
						|
            return $this->odbcRaiseError();
 | 
						|
        }
 | 
						|
        return DB_OK;
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ commit()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Commits the current transaction
 | 
						|
     *
 | 
						|
     * @return int  DB_OK on success.  A DB_Error object on failure.
 | 
						|
     */
 | 
						|
    function commit()
 | 
						|
    {
 | 
						|
        if (!@odbc_commit($this->connection)) {
 | 
						|
            return $this->odbcRaiseError();
 | 
						|
        }
 | 
						|
        return DB_OK;
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ rollback()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Reverts the current transaction
 | 
						|
     *
 | 
						|
     * @return int  DB_OK on success.  A DB_Error object on failure.
 | 
						|
     */
 | 
						|
    function rollback()
 | 
						|
    {
 | 
						|
        if (!@odbc_rollback($this->connection)) {
 | 
						|
            return $this->odbcRaiseError();
 | 
						|
        }
 | 
						|
        return DB_OK;
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ odbcRaiseError()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Produces a DB_Error object regarding the current problem
 | 
						|
     *
 | 
						|
     * @param int $errno  if the error is being manually raised pass a
 | 
						|
     *                     DB_ERROR* constant here.  If this isn't passed
 | 
						|
     *                     the error information gathered from the DBMS.
 | 
						|
     *
 | 
						|
     * @return object  the DB_Error object
 | 
						|
     *
 | 
						|
     * @see DB_common::raiseError(),
 | 
						|
     *      DB_odbc::errorNative(), DB_common::errorCode()
 | 
						|
     */
 | 
						|
    function odbcRaiseError($errno = null)
 | 
						|
    {
 | 
						|
        if ($errno === null) {
 | 
						|
            switch ($this->dbsyntax) {
 | 
						|
                case 'access':
 | 
						|
                    if ($this->options['portability'] & DB_PORTABILITY_ERRORS) {
 | 
						|
                        $this->errorcode_map['07001'] = DB_ERROR_NOSUCHFIELD;
 | 
						|
                    } else {
 | 
						|
                        // Doing this in case mode changes during runtime.
 | 
						|
                        $this->errorcode_map['07001'] = DB_ERROR_MISMATCH;
 | 
						|
                    }
 | 
						|
 | 
						|
                    $native_code = odbc_error($this->connection);
 | 
						|
 | 
						|
                    // S1000 is for "General Error."  Let's be more specific.
 | 
						|
                    if ($native_code == 'S1000') {
 | 
						|
                        $errormsg = odbc_errormsg($this->connection);
 | 
						|
                        static $error_regexps;
 | 
						|
                        if (!isset($error_regexps)) {
 | 
						|
                            $error_regexps = array(
 | 
						|
                                '/includes related records.$/i'  => DB_ERROR_CONSTRAINT,
 | 
						|
                                '/cannot contain a Null value/i' => DB_ERROR_CONSTRAINT_NOT_NULL,
 | 
						|
                            );
 | 
						|
                        }
 | 
						|
                        foreach ($error_regexps as $regexp => $code) {
 | 
						|
                            if (preg_match($regexp, $errormsg)) {
 | 
						|
                                return $this->raiseError($code,
 | 
						|
                                        null, null, null,
 | 
						|
                                        $native_code . ' ' . $errormsg);
 | 
						|
                            }
 | 
						|
                        }
 | 
						|
                        $errno = DB_ERROR;
 | 
						|
                    } else {
 | 
						|
                        $errno = $this->errorCode($native_code);
 | 
						|
                    }
 | 
						|
                    break;
 | 
						|
                default:
 | 
						|
                    $errno = $this->errorCode(odbc_error($this->connection));
 | 
						|
            }
 | 
						|
        }
 | 
						|
        return $this->raiseError($errno, null, null, null,
 | 
						|
                                 $this->errorNative());
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ errorNative()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Gets the DBMS' native error code and message produced by the last query
 | 
						|
     *
 | 
						|
     * @return string  the DBMS' error code and message
 | 
						|
     */
 | 
						|
    function errorNative()
 | 
						|
    {
 | 
						|
        if (!is_resource($this->connection)) {
 | 
						|
            return @odbc_error() . ' ' . @odbc_errormsg();
 | 
						|
        }
 | 
						|
        return @odbc_error($this->connection) . ' ' . @odbc_errormsg($this->connection);
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ tableInfo()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Returns information about a table or a result set
 | 
						|
     *
 | 
						|
     * @param object|string  $result  DB_result object from a query or a
 | 
						|
     *                                 string containing the name of a table.
 | 
						|
     *                                 While this also accepts a query result
 | 
						|
     *                                 resource identifier, this behavior is
 | 
						|
     *                                 deprecated.
 | 
						|
     * @param int            $mode    a valid tableInfo mode
 | 
						|
     *
 | 
						|
     * @return array  an associative array with the information requested.
 | 
						|
     *                 A DB_Error object on failure.
 | 
						|
     *
 | 
						|
     * @see DB_common::tableInfo()
 | 
						|
     * @since Method available since Release 1.7.0
 | 
						|
     */
 | 
						|
    function tableInfo($result, $mode = null)
 | 
						|
    {
 | 
						|
        if (is_string($result)) {
 | 
						|
            /*
 | 
						|
             * Probably received a table name.
 | 
						|
             * Create a result resource identifier.
 | 
						|
             */
 | 
						|
            $id = @odbc_exec($this->connection, "SELECT * FROM $result");
 | 
						|
            if (!$id) {
 | 
						|
                return $this->odbcRaiseError();
 | 
						|
            }
 | 
						|
            $got_string = true;
 | 
						|
        } elseif (isset($result->result)) {
 | 
						|
            /*
 | 
						|
             * Probably received a result object.
 | 
						|
             * Extract the result resource identifier.
 | 
						|
             */
 | 
						|
            $id = $result->result;
 | 
						|
            $got_string = false;
 | 
						|
        } else {
 | 
						|
            /*
 | 
						|
             * Probably received a result resource identifier.
 | 
						|
             * Copy it.
 | 
						|
             * Deprecated.  Here for compatibility only.
 | 
						|
             */
 | 
						|
            $id = $result;
 | 
						|
            $got_string = false;
 | 
						|
        }
 | 
						|
 | 
						|
        if (!is_resource($id)) {
 | 
						|
            return $this->odbcRaiseError(DB_ERROR_NEED_MORE_DATA);
 | 
						|
        }
 | 
						|
 | 
						|
        if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
 | 
						|
            $case_func = 'strtolower';
 | 
						|
        } else {
 | 
						|
            $case_func = 'strval';
 | 
						|
        }
 | 
						|
 | 
						|
        $count = @odbc_num_fields($id);
 | 
						|
        $res   = array();
 | 
						|
 | 
						|
        if ($mode) {
 | 
						|
            $res['num_fields'] = $count;
 | 
						|
        }
 | 
						|
 | 
						|
        for ($i = 0; $i < $count; $i++) {
 | 
						|
            $col = $i + 1;
 | 
						|
            $res[$i] = array(
 | 
						|
                'table' => $got_string ? $case_func($result) : '',
 | 
						|
                'name'  => $case_func(@odbc_field_name($id, $col)),
 | 
						|
                'type'  => @odbc_field_type($id, $col),
 | 
						|
                'len'   => @odbc_field_len($id, $col),
 | 
						|
                'flags' => '',
 | 
						|
            );
 | 
						|
            if ($mode & DB_TABLEINFO_ORDER) {
 | 
						|
                $res['order'][$res[$i]['name']] = $i;
 | 
						|
            }
 | 
						|
            if ($mode & DB_TABLEINFO_ORDERTABLE) {
 | 
						|
                $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
 | 
						|
            }
 | 
						|
        }
 | 
						|
 | 
						|
        // free the result only if we were called on a table
 | 
						|
        if ($got_string) {
 | 
						|
            @odbc_free_result($id);
 | 
						|
        }
 | 
						|
        return $res;
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
    // {{{ getSpecialQuery()
 | 
						|
 | 
						|
    /**
 | 
						|
     * Obtains the query string needed for listing a given type of objects
 | 
						|
     *
 | 
						|
     * Thanks to symbol1@gmail.com and Philippe.Jausions@11abacus.com.
 | 
						|
     *
 | 
						|
     * @param string $type  the kind of objects you want to retrieve
 | 
						|
     *
 | 
						|
     * @return string  the list of objects requested
 | 
						|
     *
 | 
						|
     * @access protected
 | 
						|
     * @see DB_common::getListOf()
 | 
						|
     * @since Method available since Release 1.7.0
 | 
						|
     */
 | 
						|
    function getSpecialQuery($type)
 | 
						|
    {
 | 
						|
        switch ($type) {
 | 
						|
            case 'databases':
 | 
						|
                if (!function_exists('odbc_data_source')) {
 | 
						|
                    return null;
 | 
						|
                }
 | 
						|
                $res = @odbc_data_source($this->connection, SQL_FETCH_FIRST);
 | 
						|
                if (is_array($res)) {
 | 
						|
                    $out = array($res['server']);
 | 
						|
                    while($res = @odbc_data_source($this->connection,
 | 
						|
                                                   SQL_FETCH_NEXT))
 | 
						|
                    {
 | 
						|
                        $out[] = $res['server'];
 | 
						|
                    }
 | 
						|
                    return $out;
 | 
						|
                } else {
 | 
						|
                    return $this->odbcRaiseError();
 | 
						|
                }
 | 
						|
                break;
 | 
						|
            case 'tables':
 | 
						|
            case 'schema.tables':
 | 
						|
                $keep = 'TABLE';
 | 
						|
                break;
 | 
						|
            case 'views':
 | 
						|
                $keep = 'VIEW';
 | 
						|
                break;
 | 
						|
            default:
 | 
						|
                return null;
 | 
						|
        }
 | 
						|
 | 
						|
        /*
 | 
						|
         * Removing non-conforming items in the while loop rather than
 | 
						|
         * in the odbc_tables() call because some backends choke on this:
 | 
						|
         *     odbc_tables($this->connection, '', '', '', 'TABLE')
 | 
						|
         */
 | 
						|
        $res  = @odbc_tables($this->connection);
 | 
						|
        if (!$res) {
 | 
						|
            return $this->odbcRaiseError();
 | 
						|
        }
 | 
						|
        $out = array();
 | 
						|
        while ($row = odbc_fetch_array($res)) {
 | 
						|
            if ($row['TABLE_TYPE'] != $keep) {
 | 
						|
                continue;
 | 
						|
            }
 | 
						|
            if ($type == 'schema.tables') {
 | 
						|
                $out[] = $row['TABLE_SCHEM'] . '.' . $row['TABLE_NAME'];
 | 
						|
            } else {
 | 
						|
                $out[] = $row['TABLE_NAME'];
 | 
						|
            }
 | 
						|
        }
 | 
						|
        return $out;
 | 
						|
    }
 | 
						|
 | 
						|
    // }}}
 | 
						|
 | 
						|
}
 | 
						|
 | 
						|
/*
 | 
						|
 * Local variables:
 | 
						|
 * tab-width: 4
 | 
						|
 * c-basic-offset: 4
 | 
						|
 * End:
 | 
						|
 */
 | 
						|
 | 
						|
?>
 |