mój kod
<?php
session_start();
include "db.php";
if (isset($_POST["f_name"])) {
$f_name = $_POST["f_name"];
$email = $_POST['email'];
$password = $_POST['password'];
$repassword = $_POST['repassword'];
$name = "/^[a-zA-Z ]+$/";
$emailValidation = "/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9]+(\.[a-z]{2,4})$/";
if(empty($f_name) || empty($email) || empty($password) || empty($repassword)){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a><b>PLease Fill all fields..!</b>
</div>
";
exit();
} else {
if(!preg_match($name,$f_name)){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>this $f_name is not valid..!</b>
</div>
";
exit();
}
}
if(!preg_match($emailValidation,$email)){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>this $email is not valid..!</b>
</div>
";
exit();
}
if(strlen($password) < 9 ){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>Password is weak</b>
</div>
";
exit();
}
if(strlen($repassword) < 9 ){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>Password is weak</b>
</div>
";
exit();
}
if($password != $repassword){
echo "
<div class='alert alert-warning'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>password is not same</b>
</div>
";
}
}
//existing email address in our database
$sql = "SELECT user_id FROM user_info WHERE email = '$email' LIMIT 1" ;
$check_query = mysqli_query($con,$sql);
$count_email = mysqli_num_rows($check_query);
if($count_email > 0){
echo "
<div class='alert alert-danger'>
<a href='#' class='close' data-dismiss='alert' aria-label='close'>×</a>
<b>Email Address is already available Try Another email address</b>
</div>
";
exit();
} else {
$password = md5($password);
$sql = "INSERT INTO `user_info`
(`user_id`, `first_name`, `email`, `password`),
VALUES (NULL, '$f_name', '$email', '$password',)";
$run_query = mysqli_query($con,$sql);
$_SESSION["uid"] = mysqli_insert_id($con);
$_SESSION["name"] = $f_name;
$ip_add = getenv("REMOTE_ADDR");
$sql = "UPDATE cart SET user_id = '$_SESSION[uid]' WHERE ip_add='$ip_add' AND user_id = -1";
if(mysqli_query($con,$sql)){
echo "register_success";
exit();
}
}
?>