UserValidation
registerNewUserController
<?php
class UserValidation{
function validatefirstName($firstName){
$namePattern="/^[a-zA-Z][a-zA-Z]*$/";
if(strlen($firstName)==0){
return "First Name Should Contains Characters";
}
else if(preg_match($namePattern,$firstName)!=true){
return "First name can contain only characters";
}
else{
//valid firstName
return "";
}
}//validatefirstName
function validateFullName($fullName){
$fullNamePattern="/^[a-zA-Z][a-zA-Z\\s]*$/";
if(strlen($fullName)<5){
return "Full Name Should At least 5 charcters long";
}
else if(preg_match($fullNamePattern,$fullName)!=true){
return "Full name can contain only characters";
}
else{
//valid fullname
return "";
}
}//validateFullName
function validateAddress($address){
if(strlen($address)==0){
return "address is required";
}
else{
return "";
}
}//validateAddress
function validateEmail($email){
$emailPattern="/^[a-zA-Z][a-zA-Z0-9_.]*[@][a-zA-Z0-9][a-zA-Z0-9]*[.][a-zA-Z][a-zA-Z]*$/";
if(preg_match($emailPattern,$email)!=true){
return "Invalid Email address";
}
else{
//valid email
return "";
}
}//validateEmail
function validateAge($age){
$agePattern="/^[0-9]*$/";
if(preg_match($agePattern,$age)!=true){
return "Invalid Age";
}
else{
//valid age
return "";
}
}//validAge
function validateUsername($username){
$usernamePattern="/^[a-zA-Z][a-zA-Z0-9]*$/";
if(strlen($username)==0){
return "username is required";
}
else if(strlen($username)<10){
return "username should contain at least 10 characters";
}
else if(strlen($username)>15){
return "username can contain only maximum 15 characters";
}
else if(preg_match($usernamePattern,$username)!=true){
return "Invalid Username";
}
else{
//valid age
return "";
}
}//validateusername
function validatePasswordAndPasswordConfirmation($password,$passwordConfirmation){
if($passwordConfirmation==""){
return "white spaces are not allowed for the password";
}
else if($password!=$passwordConfirmation){
return "Password does not match with the password confirmation";
}
else{
return "";
}
}//validatePassword
}//class
?>
registerNewUserController
<?php
include "../model/validation/UserValidation.php";
//registerNewUserController
if(isset($_POST["isAjax"])){
//creating validation object
$userValidation=new UserValidation;
if(isset($_POST["username"])){
//echo "validate username";
$validationErrors=$userValidation->validateUserName(trim($_POST["username"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}
if(isset($_POST["firstName"])){
//echo "validate firstName";
$validationErrors=$userValidation->validatefirstName(trim($_POST["firstName"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}//firstName
if(isset($_POST["fullName"])){
//echo "validate fullName";
$validationErrors=$userValidation->validateFullName(trim($_POST["fullName"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}//fullName
if(isset($_POST["address"])){
//echo "validate address";
$validationErrors=$userValidation->validateAddress(trim($_POST["address"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}
if(isset($_POST["email"])){
//echo "validate email";
$validationErrors=$userValidation->validateEmail(trim($_POST["email"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}
if(isset($_POST["age"])){
//echo "validate age";
$validationErrors=$userValidation->validateAge(trim($_POST["age"]));
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}
if(isset($_POST["passwordConf"]) && isset($_POST["password"])){
$password=trim($_POST["password"]);
$passwordConf=trim($_POST["passwordConf"]);
$validationErrors=$userValidation->validatePasswordAndPasswordConfirmation($password,$passwordConf);
if(strlen($validationErrors)!=0){
//there are validation errors
echo $validationErrors;
}
}
}//if outer
else if(isset($_POST["submit"])){
echo "Form submit request";
}
else{
echo "invalid request";
}
?>
validateRegistrationFormUsingAjax
<?php
include "../model/validation/UserValidation.php";
//ajax validation controller
if(isset($_POST["isAjax"])){
$userValidation=new UserValidation;
if(isset($_POST["username"])){
$validationErrors=$userValidation->validateUserName(trim($_POST["username"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}
if(isset($_POST["firstName"])){
$validationErrors=$userValidation->validatefirstName(trim($_POST["firstName"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}//firstName
if(isset($_POST["fullName"])){
$validationErrors=$userValidation->validateFullName(trim($_POST["fullName"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}//fullName
if(isset($_POST["address"])){
$validationErrors=$userValidation->validateAddress(trim($_POST["address"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}
if(isset($_POST["email"])){
$validationErrors=$userValidation->validateEmail(trim($_POST["email"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}
if(isset($_POST["age"])){
$validationErrors=$userValidation->validateAge(trim($_POST["age"]));
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}
if(isset($_POST["passwordConf"]) && isset($_POST["password"])){
$password=trim($_POST["password"]);
$passwordConf=trim($_POST["passwordConf"]);
$validationErrors=$userValidation->validatePasswordAndPasswordConfirmation($password,$passwordConf);
if(strlen($validationErrors)!=0){
echo $validationErrors;
}
}
}//if outer
//ajax request is to validate all data before submiting the form
if(isset($_POST["isAllData"])){
$userValidation=new UserValidation;
//$userValidationError="<b> The following Error Appear in Your Form </b><br/>";
$userValidationError="";
if(isset($_POST["username"])){
$validationErrors=$userValidation->validateUserName(trim($_POST["username"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}
if(isset($_POST["firstName"])){
$validationErrors=$userValidation->validatefirstName(trim($_POST["firstName"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}//firstName
if(isset($_POST["fullName"])){
$validationErrors=$userValidation->validateFullName(trim($_POST["fullName"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}//fullName
if(isset($_POST["address"])){
$validationErrors=$userValidation->validateAddress(trim($_POST["address"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}
if(isset($_POST["email"])){
$validationErrors=$userValidation->validateEmail(trim($_POST["email"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}
if(isset($_POST["passwordConf"]) && isset($_POST["password"])){
$password=trim($_POST["password"]);
$passwordConf=trim($_POST["passwordConf"]);
$validationErrors=$userValidation->validatePasswordAndPasswordConfirmation($password,$passwordConf);
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}
if(isset($_POST["age"])){
$validationErrors=$userValidation->validateAge(trim($_POST["age"]));
if(strlen($validationErrors)!=0){
$userValidationError=$userValidationError."".$validationErrors."<br/>";
}
}
if(strlen($userValidationError)!=0){
//there are validation errors
echo $userValidationError;
}
else{
//there no validation errors
echo "valid";
}
}
?>
view
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script type="text/javascript">
function createXmlHttpObject(){
var xmlhttp="";
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
return xmlhttp;
}
function sendAjaxHttpRequest(xmlhttp,url,parameterName,parameterValue){
var parameters=parameterName+"="+parameterValue+"&isAjax=true";
xmlhttp.open("POST",url,true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length", parameters.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.send(parameters);
}
function validateFormItem(elementID,elementValue,spanTagId){
if (elementValue.length==0)
{
document.getElementById(spanTagId).innerHTML="";
return;
}
xmlhttp=createXmlHttpObject();
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtAllErrors").innerHTML="";
document.getElementById(spanTagId).innerHTML=xmlhttp.responseText;
}
}
sendAjaxHttpRequest(xmlhttp,"../controller/validateRegistrationFormController.php",elementID,elementValue);
}
//password validation
function passwordValidation(passwordConf){
var password=(document.getElementById("password")).value;
if (passwordConf.length==0)
{
document.getElementById("txtPasswordConf").innerHTML="";
return;
}
xmlhttp=createXmlHttpObject();
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtPasswordConf").innerHTML="";
document.getElementById("txtPasswordConf").innerHTML=xmlhttp.responseText;
}
}
var parameters="password="+password+"&passwordConf="+passwordConf+"&isAjax=true";
xmlhttp.open("POST","../controller/validateRegistrationFormController.php",true);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length", parameters.length);
xmlhttp.setRequestHeader("Connection", "close");
xmlhttp.send(parameters);
}
</script>
</head>
<body>
<h2>User Registration form </h2>
<form method="POST" action="../controller/registerNewUserController.php" id="userRegistrationForm" name="userRegistrationForm">
UserName <input type="text" name="username" id="username" onChange="validateFormItem('username',this.value,'txtUsername')"/><p><span id="txtUsername"></span></p>
FirstName <input type="text" name="firstName" id="firstName" onChange="validateFormItem('firstName',this.value,'txtFirstName')"/><p><span id="txtFirstName"></span></p>
fullName <input type="text" name="fullName" id="fullName" onChange="validateFormItem('fullName',this.value,'txtFullName')"/><p><span id="txtFullName"></span></p>
Age <input type="text" name="age" id="age" onChange="validateFormItem('age',this.value,'txtAge')"/><p><span id="txtAge"></span></p>
Address <input type="text" name="address" id="address" onChange="validateFormItem('address',this.value,'txtAddress')"/><p><span id="txtAddress"></span></p>
Email <input type="text" name="email" id="email" onChange="validateFormItem('email',this.value,'txtEmail')"/><p><span id="txtEmail"></span></p>
password <input type="password" name="password" id="password" /><p><span id="txtPassword"></span></p>
password confirmation <input type="password" name="passwordConf" id="passwordConf" onChange="passwordValidation(this.value)"/><p><span id="txtPasswordConf"> </span></p>
<input id="submit" type="submit" name="submit" value="Register" />
</form>
</body>
</html>
