is it a digit?

[mkosmosports]

How can I write a condition, if $variable is a digit?
I have numbers and words in a table. Is there any simple way to write that condition?

Thanks.

[Jessica]

if(intval($var)){
}

Or you could use is-numeric()
http://us3.php.net/manual/en/function.is-numeric.php

[tauchai83]

yes..tat will definitely work!

[ShogunWarrior]

You could alternatively use:
[code]
$input = '88';
$match = preg_match("/^[0-9]+$/",$input);
if( $match )
{
  //wow, it is a number
}
[/code]

This version will check that it is a single digit (0-9):
[code]
$input = '88';
$match = preg_match("/^[0-9]{1}$/",$input);
if( $match )
{
  //wow, it is a single digit
}
[/code]

Or to simply check it is a number:
[code]
if( is_numeric( $input ) )
{
}[/code]