how to validate an email field using php
<?php
$email = "[email protected]";
// Validate email
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
echo("$email is a valid email address");
}
else{
echo("$email is not a valid email address");
}
?>php preg_match email validation code
<?php
function checkemail($str) {
return (!preg_match("/^([a-z0-9\+_\-]+)(\.[a-z0-9\+_\-]+)*@([a-z0-9\-]+\.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
}
if(!checkemail("[email protected]")){
echo "Invalid email address.";
}
else{
echo "Valid email address.";
}
?>valide email php
$email = "[email protected]";
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$emailErr = "Email invalide";
}email validation php
// E-mail Code Validation using a four digit number:
// var.inc.php:
<?php
session_start();
$x = mt_rand(1000,9999);
// index.php:
<?php
include_once 'var.inc.php';
$_SESSION['key'] = $x;
if(isset($_POST['submit'])){
if(!mail($_POST['email-in'], "Verify", "Code: ". $x)){
echo "ERROR EMAIL";
}else{
header("Location: validate.php");
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Validate email</title>
</head>
<body>
<form action="" method="post">
<input type="email" placeholder="email" name="email-in">
<button id="submit" type="submit" name="submit">Submit</button>
</form>
</body>
</html>
// validate.php:
<?php session_start();?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Validate</title>
</head>
<body>
<form action="" method="post">
<input type="number" name="user-key">
<button type="submit" name="submit-user-key">Validate</button>
</form>
</body>
</html>
<?php
if(isset($_POST['submit-user-key'])){
if($_POST['user-key'] == $_SESSION['key']){
//Do something
}
}
?>php validate email
$pattern = '/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iD';
$emailaddress = '[email protected]';
if (preg_match($pattern, $emailaddress) === 1) {
// emailaddress is valid
}Copyright © 2021 Codeinu
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