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@ 2014-06-05T13:50:38Z

<?php
$int = 2;
$int_zero = 0;

if(isset($int)){
    var_dump('hello');

}

if(isset($int_zero)){
    var_dump('OH NO!');
}

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive preview

51.53 ms | 402 KiB | 5 Q