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@ 2013-05-23T05:57:12Z

<?php
$controllerName = 'a:';

var_dump(preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $controllerName));
eval('class '.$controllerName.' {}');
exit;

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

45.93 ms | 402 KiB | 5 Q