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@ 2014-01-31T13:57:18Z

<?php

function is_regex($string) {
	return false !== @preg_match($string, 'anything');
}

foreach (array('/foobar/', '/foobar/i', '`test{1,3}`', '/foo', '/foo(bar/') as $candidate) {
	var_dump(array($candidate, is_regex($candidate)));
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

49.36 ms | 402 KiB | 5 Q