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@ 2013-07-10T14:27:16Z

<?php
var_dump(preg_match('/\bрус\b/uis', 'рус'));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

39.87 ms | 402 KiB | 5 Q