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run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = "PD-W3-SSO-ID"; if ( ! preg_match("/^[a-zA-Z0-9:_\/-|\.]+$/", $str)) { echo 'Disallowed Key Characters.'. $str; }
based on SQNe3
Output for 5.3.19 - 7.2.0
Disallowed Key Characters.PD-W3-SSO-ID