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@ 2017-07-04T08:40:33Z

<?php

var_dump( filter_var( 0, FILTER_VALIDATE_BOOLEAN ) );
var_dump( filter_var( '0', FILTER_VALIDATE_BOOLEAN ) );
var_dump( filter_var( 1, FILTER_VALIDATE_BOOLEAN ) );
var_dump( filter_var( '1', FILTER_VALIDATE_BOOLEAN ) );

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
filter_var: documentation ( source)

preferences:dark modelive preview

51.14 ms | 402 KiB | 5 Q