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@ 2015-12-04T06:06:30Z

<?php
var_dump(is_numeric(' 1'));
var_dump(is_numeric('0x1'));
?>

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
is_numeric: documentation ( source)

preferences:dark modelive preview

65.56 ms | 402 KiB | 5 Q