How to Create Form Validation in PHP 8 MySQL?
May 27, 2022 . Admin
Hello Friends,
In this tutorial, you will learn How to Create Form Validation in PHP 8 MySQL. I’m going to show you about PHP 8 MySQL Form Validation Example. This post will give you simple example of how to create form validation in php 8. I explained simply step by step PHP 8 MySQL form input validation example.
I will give you simple example of PHP 8 Server Side Form Validation Tutorial Example.
So, let's see bellow solution:
index.php
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>How to Create Form Validation in PHP 8 MySQL? - Mywebtuts.com</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
</head>
<body>
<?php
$con = mysqli_connect("localhost","root","","form_validations");
$errors = array();
if($_SERVER['REQUEST_METHOD'] == 'POST'){
if(preg_match("/\S+/", $_POST['fname']) === 0){
$errors['fname'] = "* First Name is required.";
}
if(preg_match("/\S+/", $_POST['description']) === 0){
$errors['description'] = "* Message filed is required.";
}
if(preg_match("/.+@.+\..+/", $_POST['email']) === 0){
$errors['email'] = "* Not a valid e-mail address.";
}
if(preg_match("/.{8,}/", $_POST['password']) === 0){
$errors['password'] = "* Password Must Contain at least 8 Chanacters.";
}
if(strcmp($_POST['password'], $_POST['confirm_password'])){
$errors['confirm_password'] = "* Password do not much.";
}
if(count($errors) === 0){
$fname = mysqli_real_escape_string($con, $_POST['fname']);
$description = mysqli_real_escape_string($con, $_POST['description']);
$email = mysqli_real_escape_string($con, $_POST['email']);
$password = hash('sha256', $_POST['password']);
function createSalt(){
$string = md5(uniqid(rand(), true));
return substr($string, 0, 3);
}
$salt = createSalt();
$password = hash('sha256', $salt . $password);
$search_query = mysqli_query($con, "SELECT * FROM members WHERE email = '$email'");
$num_row = mysqli_num_rows($search_query);
if($num_row >= 1){
$errors['email'] = "Email address is unavailable.";
}else{
$sql = "INSERT INTO members(`fname`, `description`, `email`, `salt`, `password`) VALUES ('$fname', '$description', '$email', '$salt', '$password')";
$query = mysqli_query($con, $sql);
$_POST['fname'] = '';
$_POST['description'] = '';
$_POST['email'] = '';
$successful = "<h4 class='alert alert-success'> You are successfully registered.</h4>";
}
}
}
?>
<div class="container mt-5">
<div class="row">
<div class="col-md-12 ">
<div class="card w-75 m-auto">
<div class="card-header text-center bg-dark text-white">
<h3>How to Create Form Validation in PHP 8 MySQL? - Mywebtuts.com</h3>
</div>
<div class="card-body">
<form method="post" action="">
<?php if(isset($successful)){ echo $successful; } ?>
<div class="row">
<div class="col-md-6">
<div class="form-group">
<label for="fname"><strong>First Name :<span class="text-danger">*</span></strong></label>
<input type="text" class="form-control" name="fname" id="fname" placeholder="First Name" value="<?php if(isset($_POST['fname'])){echo $_POST['fname'];} ?>">
<?php if(isset($errors['fname'])){echo "<span class='text-danger'>" .$errors['fname']. "</span>"; } ?>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="email"><strong>Email :<span class="text-danger">*</span></strong></label>
<input type="text" class="form-control" name="email" id="email" placeholder="E-mail Address" value="<?php if(isset($_POST['email'])){echo $_POST['email'];} ?>">
<?php if(isset($errors['email'])){echo "<span class='text-danger'>" .$errors['email']. "</span>"; } ?>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="pw"><strong>Password :<span class="text-danger">*</span></strong></label>
<input type="password" class="form-control" name="password" id="pw" placeholder="Password">
<?php if(isset($errors['password'])){echo "<span class='text-danger'>" .$errors['password']. "</span>"; } ?>
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label for="cpw"><strong>Confirm Password :<span class="text-danger">*</span></strong></label>
<input type="password" class="form-control" name="confirm_password" id="cpw" placeholder="Confirm Password">
<?php if(isset($errors['confirm_password'])){echo "<span class='text-danger'>" .$errors['confirm_password']. "</span>"; } ?>
</div>
</div>
<div class="col-md-12 ">
<div class="form-group">
<label for="description"><strong>Message :<span class="text-danger">*</span></strong></label>
<textarea type="text" rows="5" class="form-control" name="description" id="description" placeholder="Message"></textarea>
<?php if(isset($errors['description'])){echo "<span class='text-danger'>" .$errors['description']. "</span>"; } ?>
</div>
</div>
</div>
<div class="form-group d-flex justify-content-center">
<input type="submit" name="submit" class="btn btn-success" value="Submit">
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
Output:
It will help you...