[SOLVED] strip any chars that aren't numbers from string

[sKunKbad]

I'm looking for a function to remove all characters that aren't numbers from a string. Does php have anything built in, or do I have to come up with something on my own?

[rhodesa]

this should do the trick

$string = 'abc123';
$new = preg_replace('/[^\d]+/',$string);
echo $new

[Ken2k7]

rhodesa, you're missing the second argument in preg_replace. Also, the + is not needed. Lastly, semi-colon in the echo statement is missing.

 

<?php
$string = 'abc123';
$new = preg_replace('/[^\d]/', '', $string);
echo $new;

[rhodesa]

thanks @Ken2k7

[nrg_alpha]

Alternatively, one could use \D instead of the [^\d] negated character class.