$re = '/<\?php((?:(?:(?!php)[^?]>|(?!php)[^?]|...\?[^?])*))\?>/';
$str = '<?php
$lang=JFactory::getLanguage()->getLang();
$lang=substr($lang,0,2).>;if ($l<<<<>>>>ang==\'uk\')
$lang=\'ua\';
echo JRoute::_("index.php?option=zzp?com_sim&layout=pedaski&limit=1&limitstart=1&view=pedagogie&lang=courchevel-$lang");?> <>
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echo JText::_("PEDAEQUIP");?></a>';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php