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@ 2014-07-30T07:35:26Z

<?php

preg_match('/(?:\D+|<\d+>)*[!?]/', 'foobar foobar foobar');

if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) {
    print 'Backtrack limit was exhausted!';
}

?>

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
preg_last_error: documentation ( source)

preferences:dark modelive preview

39.88 ms | 402 KiB | 5 Q