Expression to return numbers only

[playaz]

Hi guys,

 

I am a total newbie at regex - I require an expression that will remove all letters from a string eg..

Below is an example of original string, and the result I would need in the $newString variable - what expression would be required to do this?

 

$string = '472PP';

$newString = '472';

 

Thanks again!

 

 

 

[Adam]

With regex you could do it like this:

 

$number = preg_replace('/[^0-9]*/', '', $str);

[playaz]

Thanks Adam!! thats superb :-)

[.josh]

you don't technically need that * in there.

[Adam]

Ha yerrrr I know! Just like the stars!