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@ 2015-03-16T10:26:42Z

<?php

$str = '+';
if(preg_match("/[+-<>()~*]/",$str)) {
    
    echo 'true';
} else {
    echo 'false';
}

Output
Performance
VLD
References
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preg_match: documentation ( source)

preferences:dark modelive preview

20.96 ms | 402 KiB | 5 Q