PHP strpos check mail on @ and

Question

I made a little PHP script that checks if an email is valid. The only problem is that it doesn't check if the dot is BEHIND the '@'. It accept emails like this: Hi.Hello@hotmailcom when it should only accept emails like HiHello@hotmail.com

This is my script:

<?php
$mail = $_POST['mail'];

    function checkmail($mail)
        {
            if ((strpos ($mail, '@') !== false) && (strpos ($mail, ".") !==false))
            {                   
                return true;
            }
            else
            {
                return false;
            }
        }

if(checkmail($mail))    
{
echo"Goed"; 
}   
else    
{       
echo"Fout";     
}

?>

Thanks in advance!

Haha I just noticed, I'm Dutch so I think the problem lies there — Gerlof Leuhof, Jun 28 '12 at 09:49

deceze · Accepted Answer · 2012-06-28T09:15:38.267

3

Don't badly reinvent the wheel, use filter_var('bob@example.com', FILTER_VALIDATE_EMAIL), or in your case better filter_input(INPUT_POST, 'mail', FILTER_VALIDATE_EMAIL).

http://php.net/filter_var
http://php.net/filter_input

edited Jun 28 '12 at 09:15

answered Jun 28 '12 at 09:10

deceze

510,633
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score 1 · Answer 2 · edited May 23 '17 at 11:56

1

As said in the above posts, you can use filter_var PHP function, BUT only if your PHP version is greater than 5.2.0. If you want some more generic email validation, you can also use regular expressions, see here and here for details.

edited May 23 '17 at 11:56

Community

1
1

answered Jun 28 '12 at 09:19

Bud Damyanov

30,171
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score 1 · Answer 3 · answered Apr 14 '20 at 12:35

if (
(strpos ($mail, '@') !== false) && 
(strpos ($mail, '@') == strrchr($mail, '@')) && 
(strripos($mail, ".") > strpos ($mail, '@'))
)
{return true;}

// explication:
//
// (strpos ($mail, '@') !== false) => '@' character is in the string
// (strpos ($mail, '@') == strrchr($mail, '@')) => '@' character is unique
// (strripos($mail, ".") > strpos ($mail, '@')) => last position of '.' character is      
// greater than '@' character position

PHP strpos check mail on @ and

3 Answers3