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@ 2014-06-06T08:23:10Z

<?php
var_dump(substr('', 0, 0));
var_dump(substr('', 0, 1));
var_dump(substr('', 0, 2));
var_dump(substr('a', 0, 0));
var_dump(substr('a', 0, 1));
var_dump(substr('a', 0, 2));
var_dump(substr('ab', 0, 0));
var_dump(substr('ab', 0, 1));
var_dump(substr('ab', 0, 2));

Output
Performance
VLD
References
Branches

substr: documentation ( source)
var_dump: documentation ( source)

preferences:dark modelive preview

29.06 ms | 402 KiB | 5 Q