What is the regular expression for just numbers?

[cgm225]

What is the regular expression for just numbers?

 

I have this for numbers and letters:

 

$regex  = '/[^-_A-z0-9]++/';

[BlueSkyIS]

remove the letters?

 

$regex  = '/[^0-9]++/';

 

[Orio]

That will match "everything BUT numbers". Also you need only one "+" (or "*", depends on what you're looking for).

Anyway, it should look like this:

 

<?php

if(preg_match("/^[0-9]+$/", $num_input))
  echo "Valid input";

?>

 

Orio.

[teng84]

you you only need to validate numbers simply use ctype_digit or is_numeric