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@ 2014-01-30T15:18:57Z

<?php

	$ipString = 'ffff:heee:dddd:cccc:bbbb:aaaa:9999:8888';
	$test = array();
	preg_match_all("/(?U:[a-f0-9]+:?)+/", $ipString, $test);
	if(count($test) > 1 || count($test[0]) > 8){
		echo false;
	}else{
		if(implode(':', $test[0]) !== $ipString){
			echo false;
		}
	}
	echo true;

?>

Output
Performance
VLD
References
Branches

preg_match_all: documentation ( source)
implode: documentation ( source)

preferences:dark modelive preview

41.47 ms | 402 KiB | 5 Q