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run code in 200+ php & hhvm versions
Bugs & Features
<?php $vals = array( "[[aa]]", "/\\/\\", "&", "$^", "(!@", " ", "", ); $rx = '/^[-+=_.:;!?@#$%&*<>^"\'\\\\\\/\\(\\)\\[\\]\\{\\}a-z0-9]+$/i'; foreach ($vals as $v) { var_dump(preg_match($rx, $v)); }
Output for 4.3.0 - 7.2.0
int(1) int(1) int(1) int(1) int(1) int(0) int(0)