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@ 2014-05-09T14:55:45Z

<?php
$kmtPhone = '04-2342423 234 23 4';
var_dump(preg_replace('/[\s-]/', '', $kmtPhone));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive preview

45.09 ms | 402 KiB | 5 Q