3v4l.org

run code in 150+ php & hhvm versions
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<?php $vals = array( "[[aa]]", "/\\/\\", "&", "$^", ); foreach ($vals as $v) { var_dump( preg_match( '/^[-+=_.:;!?@#\\$%\\^&*a-z0-9\\\\\\/\\(\\)\\[\\]\\{\\}\'"]$/i', $v ) ); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(0) int(0) int(1) int(0)