basic function not working

[blueman378]

hi guys, well im having some problems with my code,

 

valclass.php

<?php
class validate
{
function valemail($email) 
{
   if(eregi("^[a-zA-Z0-9_]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$]", $email)) 
   {
      return FALSE;
   }

   list($Username, $Domain) = split("@",$email);

   if(getmxrr($Domain, $MXHost)) 
   {
      return $email;
   }
}

function valtext($string) 
{
$string = trim(htmlentities($string, ENT_COMPAT));
$p = array(
                "<b>", "</b>", 
                "<strong>", "</strong>", 
                "<u>", "</u>", 
                "<i>", "</i>"
);
  $q = array(
                "<strong>", "</strong>", 
                "<strong>", "</strong>",
                "<u>", "</u>", 
                "<i>", "</i>"
);

$string = preg_replace($p, $q, $string);
return $string;
}

}
$validate = new validate; //CALLING THE Product Admin CLASS
?>

 

index.php

<?php include("valclass.php");
$a = "<b>Hello i @m matthew</b><strong>lol</strong>";
echo $validate->valtext($a);
?>

 

error:

Warning: preg_replace() [function.preg-replace]: Unknown modifier 'g' in C:\Users\Matthew\websites\ecommerce\valclass.php on line 35

that line is the line that instigates the preg replace

 

[mraiur]

hmm try $new_class =& new validate();

first and then call the preg_replace function i think its better to name your variables longer then with on letter .

[blueman378]

ignore the fact that it is simply called a thats jsut for testing purposes,

 

well heres a updated code [thanks Rajiv]

<?php
class validate
{	

function valemail($email) 
{
         //Assumes that valid email addresses consist of [email protected]
         $at = strpos($email, "@");
         $dot = strrpos($email, ".");

         if($at === false ||
            $dot === false ||
            $dot <= $at + 1 ||
            $dot == 0 ||
            $dot == strlen($email) - 1)
            return "Invalid Email";

         $user_name = substr($email, 0, $at);
         $domain_name = substr($email, $at + 1, strlen($email));

         $user_name = trim(htmlentities($user_name, ENT_COMPAT));
         $domain_name = trim(htmlentities($domain_name, ENT_COMPAT));

$email = $username+@+$domain_name;
         return $email;
         }

function valtext($string) 
{
$string = trim(htmlentities($string, ENT_COMPAT));
$p = array(
                "#<b>#", "#</b>#", 
                "#<strong>#", "#</strong>#", 
                "#<u>#", "#</u>#", 
                "#<i>#", "#</i>#"
);
  $q = array(
                "<strong>", "</strong>", 
                "<strong>", "</strong>",
                "<u>", "</u>", 
                "<i>", "</i>"
);

$string = preg_replace($p, $q, $string);
return $string;
}

}
$validate = new validate; //CALLING THE Product Admin CLASS


?>

 

whick works fine, but now as you can see im working on the email valdation,

its semi working, if it is invalid Invalid email is returned, however if it is valid the script is echoing 0,

 

any ideas why?