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@ 2017-07-11T20:20:50Z

<?php
$value='13';
var_dump(ctype_digit($value));
$value=13;
var_dump(ctype_digit($value));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
ctype_digit: documentation ( source)

preferences:dark modelive preview

37.53 ms | 402 KiB | 5 Q