optianal forum validation

[ironsight2000]

I need to make this so that if typed in it will validated it but if not pass it.

 

			if($_POST['Ext'] == 'Ext') {
	       $error_Ext = 'please enter Ext';
$errors ++;
	} else if(!eregi("^[0-9]{0,3}",$_POST['Ext'])) {
		$error_Ext = 'please enter a valid Ext';
$errors ++;
		}

}

[.josh]

What?

[ironsight2000]

I have a forum that has phone number i need to add a extension to the forum.  I need it so that the user can only put numbers in and not letters or symbols.

[.josh]

You forgot the $ at the end of the regex.  Without it, something like 123fdss is valid.  $ signifies end of the string (the opposite of ^).  You also forgot the /'s to signify start and end of regex.

 

<?php
   $string = '1234';
   // $string can be any amount of only numbers
 if(!preg_match("/^[0-9]*$/",$string)) {
   echo "invalid<br/>";
   }
   // $string can be any number 1 to 3 digits
 if(!preg_match("/^[0-9]{1,3}$/",$string)) {
   echo "invalid<br/>";
   }
?>