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====== Exemples de regex en vrac ======

Quelques exemples d'expressions régulières utilisées en PHP :

<code php>
// 1- remove recursively the content of for (), [] and {}
// 2- removes escaped ' and "
// 3- removes content betweend '' and "" (no recursion needed)
$embracerPattern = "/\[([^\[\]]++|(?R))*+\]|\(([^\(\)]++|(?R))*+\)|{([^{}]++|(?R))*+}/";
$escapedQuotePattern = "/\\\\'|\\\\\"/";
$quotedStringPattern = "/'([^']++)*+'|\"([^\"]++)*+\"/";

//replace escaped quotes with html entities
$escapedQuotePattern = "/\\\\'/";
$call['code'] = preg_replace($escapedQuotePattern, '&#092;&#apos;', $call['code']);
$escapedQuotePattern = "/\\\\\"/";
$call['code'] = preg_replace($escapedQuotePattern, '&#092;&#quot;', $call['code']);

//replace commas between remaining (double) quotes with html entities
$quotedStringPattern = "/'([^']++)*+'|\"([^\"]++)*+\"/";
$call['code'] = preg_replace_callback(
    $quotedStringPattern,
    function ($matches) {
        return str_replace(',','&#044;',$matches[0]);
    },
    $call['code']
);

//replace commas between parentheses, braces or brackets
$embracerPattern = "/\[([^\[\]]++|(?R))*+\]|\(([^\(\)]++|(?R))*+\)|{([^{}]++|(?R))*+}/";
$call['code'] = preg_replace($embracerPattern, '', $call['code']);

//get the list of given parameters
$results = preg_split('/,/', $call['code']);
</code>