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@ 2015-05-07T14:31:06Z

<?php
$psm_name = 'Eur-A^sia';
if ((preg_match("/^[a-zA-Z0-9&@#_.\-\s'\"]+$/", $psm_name))) {
            echo "true";
        }else{
        echo "false";
        }

Output
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preg_match: documentation ( source)

preferences:dark modelive preview

52.53 ms | 402 KiB | 5 Q