Email validation check

[sidd111]

I need to check if the input is a valid email or not if the email is not valid then it would ask again for the mail address  without refreshing the whole page.

</script>
<?php
error_reporting(E_ALL);
if($_POST['submit']=="India")
{
  if(isset($_POST['EMAIL']))
{ //only do file operations when appropriate
        $a = $_POST['EMAIL'];
        $myFile = "email_users.txt";
$d=date("d-m-y");
$r="\n";
$s=$_POST['submit'];
    $fh = fopen($myFile, 'a+') or die("can't open file");
        fwrite($fh, $a.','.$d.','.$s.','.$r);
        fclose($fh);
}
}
if($_POST['sub']=="Overseas")
{
  if(isset($_POST['EMAIL']))
{ //only do file operations when appropriate
        $b = $_POST['EMAIL'];
        $my = "email_users.txt";
$e=date("d-m-y");
$t="\n";
$u=$_POST['sub'];
    $f = fopen($my, 'a+') or die("can't open file");
        fwrite($f, $b.','.$e.','.$u.','.$t);
        fclose($f);
}
}
//header("location:http://www.xyz.com");
?>

Please help me urgently

 

Thanks in advance

[sidd111]

mods please help me its urgent .. I am in trouble ..Please help me fast

[PravinS]

if you want to use server side valiation then you can use "filter_var" function to check the email or else you can use javascript email validation

http://www.php.net/manual/en/function.filter-var.php

Edited January 6, 2014 by PravinS

[sidd111]

couldnt understand can you please edit the above code and give me.

[dungpt29]

 

 

I need to check if the input is a valid email or not if the email is not valid then it would ask again for the mail address  without refreshing the whole page.

 

The best way to solve your problem is testing email address at client side using a JavaScript function as the following:

function checkemail(emailStr)
{
    var emailPat = /^([A-Za-z0-9]+[_\-\.]?[A-Za-z0-9]+)+\@([A-Za-z0-9]+[\-\.]?[A-Za-z0-9]+)+(\.[A-Za-z]+)$/;
    if (!emailPat.test(emailStr))
    {
        return false;
    }

    return true;
}