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@ 2014-09-30T14:45:50Z

<?php
var_dump(is_numeric('1234'));
var_dump(is_numeric(1234));
var_dump(is_numeric('string'));
var_dump(is_numeric('string1234'));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

41.22 ms | 402 KiB | 5 Q