php form validation
Hi Friends today we will learn how validation form in php..in this lesson you will learn empty fields validation,email validation,confirm password validation and more..
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| php form validation |
below php codes use to validate form..
<?php
// initializing variables
//We use array_push to store all errors into $errors variable
$errors = array();
$conn=new mysqli('localhost','root','','test');
if(isset($_POST['submit'])){
//UserName Checking
if(empty($_POST['name'])){
$nameerror='Your UserName is Empty';
array_push($errors,'UserName');
}
//Email Checking and Validation Start
if(!empty($_POST['email'])){
if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)){
$emailerror='<font color=green>'.$_POST['email'].'</font> is Not Valid';
array_push($errors,'email not Valid');
}
}else{
$emailerror='Your Email is Empty';
array_push($errors,'email empty');
}
//Email Validation End
//Password Validation
if(!empty($_POST['password'])){
if(strlen($_POST['password'])<8){
$passerror='Your Password Should not be less Than 8 Characters';
array_push($errors,'password error');
}
}else{
$passerror='Your Password is Empty';
array_push($errors,'password empty');
}
//Confirm Password Validation
if($_POST['password']!==$_POST['passconf']){
$passconferror='Your Password Did Not Match';
array_push($errors,'password not matched');
}
//Full Name Validation
if(empty($_POST['fname'])){
$fnameerror="Your Full Name Can Not be Empty";
array_push($errors,'Full Name empty');
}
//Sex Checking
if(empty($_POST['sex'])){
$sexerror="Your Sex Can Not be Empty";
array_push($errors,'Sex empty');
}
//Country Checking
if(empty($_POST['country'])){
$countryerror="Your Country Can Not be Empty";
array_push($errors,'Country empty');
}
//if Errors count to 0 ..means no errors occured
if(count($errors)==0){
//escaping from string
$username=mysqli_real_escape_string($conn,$_POST['name']);
$password=mysqli_real_escape_string($conn,$_POST['password']);
$passconf=mysqli_real_escape_string($conn,$_POST['passconf']);
$email=mysqli_real_escape_string($conn,$_POST['email']);
$fname=mysqli_real_escape_string($conn,$_POST['fname']);
$sex=mysqli_real_escape_string($conn,$_POST['sex']);
$country=mysqli_real_escape_string($conn,$_POST['country']);
//Now you can insert data into database
$success= 'Successfully Validate';
}else{
$error='Fill The Registration form Correctly';
}
}
?>
HTML Form:
<div align="center">
<h3>PHP Form Validation</h3>
<form method="POST">
<table width="50%">
<tr>
<td>UserName:</td>
<td><input type="text" name="name"/>
<div><?php if(isset($nameerror)){
echo '<div class=error>'.$nameerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Email:</td>
<td><input type="text" name="email"/>
<div><?php if(isset($emailerror)){
echo '<div class=error>'.$emailerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Password:</td>
<td><input type="text" name="password"/>
<div><?php if(isset($passerror)){
echo '<div class=error>'.$passerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Confirm Password:</td>
<td><input type="text" name="passconf"/>
<div><?php if(isset($passconferror)){
echo '<div class=error>'.$passconferror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Full Name:</td>
<td><input type="text" name="fname"/>
<div><?php if(isset($fnameerror)){
echo '<div class=error>'.$fnameerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Sex:</td>
<td><input type="radio" name="sex" value="female"/>Female
<input type="radio" name="sex" value="male"/> Male
<input type="radio" name="sex" value="other"/>Other
<div><?php if(isset($sexerror)){
echo '<div class=error>'.$sexerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Country:</td>
<td>
<select type="text" name="country">
<option value="">Select Country</option>
<option value="india">India</option>
<option value="usa">United States</option>
<option value="japan">Japan</option>
<option value="russia">Russia</option>
</select>
<div><?php if(isset($countryerror)){
echo '<div class=error>'.$countryerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="submit"/></td>
</tr>
</table>
</form>
<?php if(isset($success)){
echo $success;}?>
<?php if(isset($error)){
echo $error;}?>
</div>
Complete PHP form Validation: validation.php
<?php
// initializing variables
//We use array_push to store all errors into $errors variable
$errors = array();
$conn=new mysqli('localhost','root','','test');
if(isset($_POST['submit'])){
//UserName Checking
if(empty($_POST['name'])){
$nameerror='Your UserName is Empty';
array_push($errors,'UserName');
}
//Email Checking and Validation Start
if(!empty($_POST['email'])){
if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)){
$emailerror='<font color=green>'.$_POST['email'].'</font> is Not Valid';
array_push($errors,'email not Valid');
}
}else{
$emailerror='Your Email is Empty';
array_push($errors,'email empty');
}
//Email Validation End
//Password Validation
if(!empty($_POST['password'])){
if(strlen($_POST['password'])<8){
$passerror='Your Password Should not be less Than 8 Characters';
array_push($errors,'password error');
}
}else{
$passerror='Your Password is Empty';
array_push($errors,'password empty');
}
//Confirm Password Validation
if($_POST['password']!==$_POST['passconf']){
$passconferror='Your Password Did Not Match';
array_push($errors,'password not matched');
}
//Full Name Validation
if(empty($_POST['fname'])){
$fnameerror="Your Full Name Can Not be Empty";
array_push($errors,'Full Name empty');
}
//Sex Checking
if(empty($_POST['sex'])){
$sexerror="Your Sex Can Not be Empty";
array_push($errors,'Sex empty');
}
//Country Checking
if(empty($_POST['country'])){
$countryerror="Your Country Can Not be Empty";
array_push($errors,'Country empty');
}
//if Errors count to 0 ..means no errors occured
if(count($errors)==0){
$username=mysqli_real_escape_string($conn,$_POST['name']);
$password=mysqli_real_escape_string($conn,$_POST['password']);
$passconf=mysqli_real_escape_string($conn,$_POST['passconf']);
$email=mysqli_real_escape_string($conn,$_POST['email']);
$fname=mysqli_real_escape_string($conn,$_POST['fname']);
$sex=mysqli_real_escape_string($conn,$_POST['sex']);
$country=mysqli_real_escape_string($conn,$_POST['country']);
$success= 'Successfully Validate';
}else{
$error='Fill The Registration form Correctly';
}
}
?>
<style>
.error{
color:red;
font-weight:bold;
font-style:italic;
}
input[type=text]{
padding:5px;
border-radius:4px;
}
input[type=submit]{
padding:7px;
background:black;
color:white;
border-radius:4px;
cursor:pointer;
}
input[type='radio']:after {
width: 15px;
height: 15px;
border-radius: 15px;
top: -2px;
left: -1px;
position: relative;
background-color: #d1d3d1;
content: '';
display: inline-block;
visibility: visible;
border: 2px solid white;
}
input[type='radio']:checked:after {
width: 15px;
height: 15px;
border-radius: 15px;
top: -2px;
left: -1px;
position: relative;
background-color: #ffa500;
content: '';
display: inline-block;
visibility: visible;
border: 2px solid white;
}
select {
padding:3px;
margin: 0;
font-size:15px;
width:185px;
border-radius:4px;
background: white;
color:#888;
-webkit-appearance:none;
-moz-appearance:none;
appearance:none;
cursor:pointer;
}
</style>
<div align="center">
<h3>PHP Form Validation</h3>
<form method="POST">
<table width="50%">
<tr>
<td>UserName:</td>
<td><input type="text" name="name"/>
<div><?php if(isset($nameerror)){
echo '<div class=error>'.$nameerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Email:</td>
<td><input type="text" name="email"/>
<div><?php if(isset($emailerror)){
echo '<div class=error>'.$emailerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Password:</td>
<td><input type="text" name="password"/>
<div><?php if(isset($passerror)){
echo '<div class=error>'.$passerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Confirm Password:</td>
<td><input type="text" name="passconf"/>
<div><?php if(isset($passconferror)){
echo '<div class=error>'.$passconferror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Full Name:</td>
<td><input type="text" name="fname"/>
<div><?php if(isset($fnameerror)){
echo '<div class=error>'.$fnameerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Sex:</td>
<td><input type="radio" name="sex" value="female"/>Female
<input type="radio" name="sex" value="male"/> Male
<input type="radio" name="sex" value="other"/>Other
<div><?php if(isset($sexerror)){
echo '<div class=error>'.$sexerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td>Country:</td>
<td>
<select type="text" name="country">
<option value="">Select Country</option>
<option value="india">India</option>
<option value="usa">United States</option>
<option value="japan">Japan</option>
<option value="russia">Russia</option>
</select>
<div><?php if(isset($countryerror)){
echo '<div class=error>'.$countryerror.'</div>';}?></div>
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="submit"/></td>
</tr>
</table>
</form>
<?php if(isset($success)){
echo $success;}?>
<?php if(isset($error)){
echo $error;}?>
</div>
That's It friends all about php form validation..
Thank you for Visiting ...
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