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@ 2013-01-23T13:09:23Z

<?php

$domainNumber = "3";
if (!substr($domainNumber, 0, 1) == '_')
		{
			$domainNumber = "_$domainNumber";
		}

var_dump($domainNumber);

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

39.57 ms | 402 KiB | 5 Q