forked from GNUsocial/gnu-social
88 lines
2.2 KiB
Markdown
88 lines
2.2 KiB
Markdown
|
PHP Parser
|
||
|
|
==========
|
||
|
|
|
||
|
|
This is a PHP 5.2 to PHP 5.6 parser written in PHP. Its purpose is to simplify static code analysis and
|
||
|
|
manipulation.
|
||
|
|
|
||
|
|
[**Documentation for version 1.x**][doc_1_x] (stable; for running on PHP >= 5.3).
|
||
|
|
|
||
|
|
[Documentation for version 0.9.x][doc_0_9] (unsupported; for running on PHP 5.2).
|
||
|
|
|
||
|
|
In a Nutshell
|
||
|
|
-------------
|
||
|
|
|
||
|
|
The parser turns PHP source code into an abstract syntax tree. For example, if you pass the following code into the
|
||
|
|
parser:
|
||
|
|
|
||
|
|
```php
|
||
|
|
<?php
|
||
|
|
echo 'Hi', 'World';
|
||
|
|
hello\world('foo', 'bar' . 'baz');
|
||
|
|
```
|
||
|
|
|
||
|
|
You'll get a syntax tree looking roughly like this:
|
||
|
|
|
||
|
|
```php
|
||
|
|
array(
|
||
|
|
0: Stmt_Echo(
|
||
|
|
exprs: array(
|
||
|
|
0: Scalar_String(
|
||
|
|
value: Hi
|
||
|
|
)
|
||
|
|
1: Scalar_String(
|
||
|
|
value: World
|
||
|
|
)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
1: Expr_FuncCall(
|
||
|
|
name: Name(
|
||
|
|
parts: array(
|
||
|
|
0: hello
|
||
|
|
1: world
|
||
|
|
)
|
||
|
|
)
|
||
|
|
args: array(
|
||
|
|
0: Arg(
|
||
|
|
value: Scalar_String(
|
||
|
|
value: foo
|
||
|
|
)
|
||
|
|
byRef: false
|
||
|
|
)
|
||
|
|
1: Arg(
|
||
|
|
value: Expr_Concat(
|
||
|
|
left: Scalar_String(
|
||
|
|
value: bar
|
||
|
|
)
|
||
|
|
right: Scalar_String(
|
||
|
|
value: baz
|
||
|
|
)
|
||
|
|
)
|
||
|
|
byRef: false
|
||
|
|
)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
```
|
||
|
|
|
||
|
|
You can then work with this syntax tree, for example to statically analyze the code (e.g. to find
|
||
|
|
programming errors or security issues).
|
||
|
|
|
||
|
|
Additionally, you can convert a syntax tree back to PHP code. This allows you to do code preprocessing
|
||
|
|
(like automatedly porting code to older PHP versions).
|
||
|
|
|
||
|
|
Documentation
|
||
|
|
-------------
|
||
|
|
|
||
|
|
1. [Introduction](doc/0_Introduction.markdown)
|
||
|
|
2. [Installation](doc/1_Installation.markdown)
|
||
|
|
3. [Usage of basic components](doc/2_Usage_of_basic_components.markdown)
|
||
|
|
4. [Other node tree representations](doc/3_Other_node_tree_representations.markdown)
|
||
|
|
5. [Code generation](doc/4_Code_generation.markdown)
|
||
|
|
|
||
|
|
Component documentation:
|
||
|
|
|
||
|
|
1. [Lexer](doc/component/Lexer.markdown)
|
||
|
|
|
||
|
|
[doc_0_9]: https://github.com/nikic/PHP-Parser/tree/0.9/doc
|
||
|
|
[doc_1_x]: https://github.com/nikic/PHP-Parser/tree/1.x/doc
|