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@ 2013-08-16T03:54:58Z

<?php

var_export(filter_var("0", FILTER_VALIDATE_INT));
echo "\n";
var_export(filter_var("+01", FILTER_VALIDATE_INT));
echo "\n";
var_export(filter_var("-01", FILTER_VALIDATE_INT));

Output
Performance
VLD
References
Branches

filter_var: documentation ( source)
var_export: documentation ( source)

preferences:dark modelive preview

40.55 ms | 402 KiB | 5 Q