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@ 2017-05-20T06:12:23Z

<?php

$string = "VAT hf TAX-ergrdt5.2%";
$int = (preg_replace('/[^0-9.]+/', '', $string));

echo $int;

Output
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preg_replace: documentation ( source)

preferences:dark modelive preview

52.63 ms | 402 KiB | 5 Q