How to Remove everything but...

[me102]

Can someone tell me how to remove everything but "." and numbers.

[Chris92]

Try something like:

<?php
$letters = array("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z");
$str = strtolower("WER.234.WER.werRET.4");
$string = str_replace($letters, "", $str);

echo $string; //Should echo .234...4
?>

[sasa]

try

<?php
$n = 'as3 frz8 . Ok23';
$n1 = preg_replace('/[^0-9\.]/','',$n);
echo $n1;
?>