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@ 2014-05-26T00:58:26Z

<?php
$regex = '(((?!a).)*)*a\\{';
$test_string = 'AAAAAAAAAAAAAA{AA';
var_dump(preg_match('/'.$regex.'/','WORKED',$test_string));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

37 ms | 402 KiB | 5 Q