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@ 2013-07-10T05:06:58Z

<?php
        $value = '  Ączkó 123   !!!';
        $value = preg_replace('/[^\d\p{L}]/u', '', strval($value));
        echo $value;

Output
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preg_replace: documentation ( source)

preferences:dark modelive preview

33.4 ms | 402 KiB | 5 Q