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@ 2013-08-16T03:26:11Z

<?php

var_export(filter_var(false, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ));
var_export(filter_var("foo", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE));
var_export(filter_var(false, FILTER_VALIDATE_BOOLEAN, ));
var_export(filter_var("foo", FILTER_VALIDATE_BOOLEAN, ));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

38.88 ms | 402 KiB | 5 Q