PHP script, that checks if

[Super2]

in some of the form`s fields entries are numbers and if they are not - returns  alert mesage or some message??

Does someone have any idea?



Sry about the English :)  (if there are any mistakes )

[HeyRay2]

You can check if a variable contains only numbers in several ways:

[b]is_numeric()[/b] method
[code]
<?php

$foo = 20 // <== your variable

if( is_numeric($foo) ){
echo 'Variable is a number.';
} else {
echo 'Variable is NOT a number';
}

?>
[/code]

[b]Regular Expression[/b]
[code]
<?php

$foo = 20;

if( preg_match('/^[0-9]$/', $foo)){
echo 'Variable is a number.';
} else {
echo 'Variable is NOT a number';
}

?>
[/code]

I'm assuming that you'll eventually want to check other fields that may not be numbers, so I would recommend creating an validation / error handling class like the one mentioned at the link below:

http://www.phpfreaks.com/tutorials/117/0.php