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@ 2018-10-24T19:03:15Z

<?php

$valor = "3cm";

echo number_format(str_replace("cm", "", $valor), 2, '', '.');

Output
Performance
VLD
References
Branches

str_replace: documentation ( source)
number_format: documentation ( source)

preferences:dark modelive preview

37.55 ms | 402 KiB | 5 Q