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@ 2014-01-26T08:36:55Z

<?php
var_dump("  4" + 0,"    4" + 0);
var_dump("  4 " + 0 ,"    4 " + 0);

Output
Performance
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var_dump: documentation ( source)

preferences:dark modelive preview

34.59 ms | 402 KiB | 5 Q