Check string is numbers and letters only

[EchoFool]

Hey.

 

I been using a function to check if a string contains only letters which is:

 

ctype_alpha

 

But i would like to change it to allow numbers 0 to 9 and the letters is there a function to do that in PHP i can't find it.

[IwnfuM]

$checkValidetion = preg_match('/^[a-zA-Z0-9]+$/' , $string);

 

$checkValidetion will equal 1 if is only chars and 0-9 and equals false 0 if there is something else.

- Iwnfum.

 

[sasa]

ctype_alnum()