PHP and Javascript Email Validation of '@' Symbol

Question

Trying to get code to search if \'@\' symbol is present in typed-in email address and echo if symbol is not. Everything works fine without the searching for @ code.

chec

Answer 1

try this :-

function isValidEmailAddr ($email) {
    if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
      return true;
    } else {
      return false;
    }
}

usage :-

include('path/to/lib.php');
$test = 'email@foo.bar';
if(isValidEmailAddr($test) == true){
 echo "good to go";
} else { echo "try again babe!" }

Answer 2

It will not only validate email address, but also sanitize it for unexpected characters:

$email = $_POST['email'];
$emailB = filter_var($email,   
 FILTER_SANITIZE_EMAIL); 
 if(filter_var($emailB,   
 FILTER_VALIDATE_EMAIL) === false ||  
 $emailB != $email ) { echo "This email adress 
  isn't valid!"; exit(0);
}

Answer 3

A much better approach to validating the emails, would be to use the built in filters intended for that sort of thing

<?php

    include '/connect.php'; //connects to mysql

    $email = mysqli_real_escape_string($connect, $_POST['email']);

    $check = mysqli_query($connect, "SELECT email FROM users WHERE email='$email'");
    $check_num_rows = mysqli_num_rows($check);

    if ( filter_var($email, FILTER_VALIDATE_EMAIL) ) {
        if ($check_num_rows==0) {
            echo 'Email valid';
        } elseif ($check_num_rows==1) {
            echo 'Email already registered';
        }
    } else {
        echo 'Please enter a valid email';
    }
?>

The reason your code doesn't work, is because PHP doesn't have a str or indexOf method, you should be using something like strpos instead

if (strpos($email, '@') === false) { ...

Answer 4

you can use default php email validation

if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
  echo("$email is a valid email address");
} else {
  echo("$email is not a valid email address");
}
?>

you can also check this at https://eval.in/870776