use visited lookup with reference to gain performance
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@ -1151,7 +1151,7 @@ EOF;
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*
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* @return bool
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*/
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private function hasReference($id, array $arguments, $deep = false, $visited = array())
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private function hasReference($id, array $arguments, $deep = false, &$visited = array())
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{
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foreach ($arguments as $argument) {
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if (is_array($argument)) {
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