Email Validation in PHP

Submitted by jkev on Tuesday, May 21, 2013 - 20:01.

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Hi Guys, This code is an email validator. It will validate the email address that you input. If the email address is not valid, like it don’t have an @ symbol, then the script will display a message that the email is invalid. This script is useful if you have a user registration page. Sample code:

<?php 
include('header.php');
?>
<html>
<body>
<div class="container">
        <form class="form-horizontal" method="POST">
                <div class="control-group">
                        <label class="control-label" for="inputEmail">Email</label>
                        <div class="controls">
                                <input type="text" name="email" id="inputEmail" placeholder="Email" required>
                        </div>
                </div>
                <div class="control-group">
                        <div class="controls">
                                <button type="submit" name="submit" class="btn">Submit</button>
                        </div>
                </div>
                <div class="control-group">
                        <div class="controls">
                                <?php
                                if (isset($_POST['submit'])){
                                
                                $email=$_POST['email'];
                                $pattern = "/^([a-z0-9])(([-a-z0-9._])*([a-z0-9]))*\@([a-z0-9])(([a-z0-9-])*([a-z0-9]))+(\.([a-z0-9])([-a-z0-9_-])?([a-z0-9])+)+$/i";
                                //Input Validations
                                if (!preg_match($pattern,$email)){      
                                ?>
                                <div class="alert alert-danger span2">
                                        <?php   echo 'Invalid Email Address';    ?>
                                </div>
                                <?php   
                                }else{
                                ?>
                                <div class="alert alert-success span3">
                                        <?php   echo 'This is a Valid Email Address';    ?>
                                </div>
                                <?php
                                }
                                }
                                ?>
                        </div>
                </div>
        </form>
</div>
</body>
</html>

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