Form Validation using jQuery in PHP

Form-Validation-using-jQuery-in-PHP-2.png

In this article, I will guide you about Form Validation using jQuery in PHP. We will do create, read, update and delete, we will step by step guide to do Form Validation using jQuery in PHP.

In a previous blog, we performed a crud operation in PHP using AJAX

https://blog.codehunger.in/crud-operation-in-php-using-ajax/

To do the crud operation in PHP and Form Validation using jQuery in PHP we will follow the below steps:-

  • Create Database
  • Connection establish with database
  • Create a listing file
  • Perform CRUD Operation
  • Validate the form using jQuery
  •  To build a dynamic, form-based Web application using Ajax
  • Test the code

Step 1: Create Database

To create the database you will have to go to your PHPMyAdmin create a database named as a user after that create a table named crud, crud table will contain the following columns Id, name, email, phone, city, password and action where Id will be our primary key. Below you can see how it looks.

Step 2: Create a database connection.

To create a database connection we will write the following code.

Go to your htdocs, create a folder named learn-php and inside we can create one more folder named validateFormUsingJquery and under that folder create a file named database.php and add the below code into it.

<?php
    $servername = "localhost";
    $username = "root";
    $password = "";
    $database = "user";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $database);
?>

Step 3: Create a Listing File

Now we will create a listing file, where we will show all data which is stored in our database, so in your folder validateFormUsingJquery create a file named index.php and add the below code into it.

<?php
  include 'database.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">
	<title>User Data</title>
	<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto|Varela+Round">
	<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
	<link rel="stylesheet" href="css/style.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.19.1/jquery.validate.min.js"></script>
	<script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/additional-methods.min.js"></script>
	<script src="ajax.js"></script>
	<script src="addUserValidate.js"></script>
	<script src="editUserValidate.js"></script>
</head>
<body>
	<style type="text/css">
	.error {
		color:red;
	}
	</style>
    <div class="container">
	<p id="success"></p>
        <div class="table-wrapper">
            <div class="table-title">
                <div class="row">
                    <div class="col-sm-6">
						<h2>Manage <b>Users</b></h2>
					</div>
					<div class="col-sm-6">
						<a href="#addEmployeeModal" class="btn btn-success" data-toggle="modal"><i class="material-icons"></i> <span>Add New User</span></a>
						<a href="JavaScript:void(0);" class="btn btn-danger" id="delete_multiple"><i class="material-icons"></i> <span>Delete</span></a>						
					</div>
                </div>
            </div>
            <table class="table table-striped table-hover">
                <thead>
                    <tr>
						<th>
							<span class="custom-checkbox">
								<input type="checkbox" id="selectAll">
								<label for="selectAll"></label>
							</span>
						</th>
						<th>SL NO</th>
                        <th>NAME</th>
                        <th>EMAIL</th>
						<th>PHONE</th>
                        <th>CITY</th>
                        <th>ACTION</th>
                    </tr>
                </thead>
				<tbody>
				
				<?php
				$result = mysqli_query($conn,"SELECT * FROM crud");
					$i=1;
					while($row = mysqli_fetch_array($result)) {
				?>
				<tr id="<?php echo $row["id"]; ?>">
				<td>
							<span class="custom-checkbox">
								<input type="checkbox" class="user_checkbox" data-user-id="<?php echo $row["id"]; ?>">
								<label for="checkbox2"></label>
							</span>
						</td>
					<td><?php echo $i; ?></td>
					<td><?php echo $row["name"]; ?></td>
					<td><?php echo $row["email"]; ?></td>
					<td><?php echo $row["phone"]; ?></td>
					<td><?php echo $row["city"]; ?></td>
					<td>
						<a href="#editEmployeeModal" class="edit" data-toggle="modal">
							<i class="material-icons update" data-toggle="tooltip" 
							data-id="<?php echo $row["id"]; ?>"
							data-name="<?php echo $row["name"]; ?>"
							data-email="<?php echo $row["email"]; ?>"
							data-phone="<?php echo $row["phone"]; ?>"
							data-city="<?php echo $row["city"]; ?>"
							data-password="<?php echo $row["password"]; ?>"
							title="Edit"></i>
						</a>
						<a href="#deleteEmployeeModal" class="delete" data-id="<?php echo $row["id"]; ?>" data-toggle="modal"><i class="material-icons" data-toggle="tooltip" 
						 title="Delete"></i></a>
                    </td>
				</tr>
				<?php
				$i++;
				}
				?>
				</tbody>
			</table>
			
        </div>
    </div>
	<!-- Add Modal HTML -->
	<div id="addEmployeeModal" class="modal fade">
		<div class="modal-dialog">
			<div class="modal-content">
				<form id="user_form" name="user_form">
                  <!--Modal Header-->
					<div class="modal-header">						
						<h4 class="modal-title">Add User</h4>
						<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
					</div>
<!--Model Body-->
                  <div class="modal-body">					
						<div class="form-group">
							<label>NAME</label>
							<input type="text" id="name" name="name" class="form-control" >
						</div>

						<div class="form-group">
							<label>EMAIL</label>
							<input type="email" id="email" name="email" class="form-control" >
						</div>

						<div class="form-group">
                          <!--Phone-->
							<label>PHONE</label>
							<input type="tel" id="phone" name="phone" class="form-control" >
						</div>

						<div class="form-group">
                          <!--City-->
							<label>CITY</label>
							<input type="text" id="city" name="city" class="form-control" >
						</div>					
                      
						<div class="form-group">
						<!-- Password-->
							<label>Password</label>
							<input type="password" id="password" name="password" placeholder="" class="form-control">
						</div>
                      
						<div class="form-group">
						<!-- confirm Password -->
							<label>Password (Confirm)</label>
							<input type="password" id="password_confirm" name="password_confirm" placeholder="" class="form-control">
			</div>	
					</div>
<!--Model Footer-->
                  <div class="modal-footer">
					    <input type="hidden" value="1" name="type">
						<input type="button" class="btn btn-default" data-dismiss="modal" value="Cancel">
						<button type="submit" class="btn btn-success" id="btn-add">Add</button>
					</div>
				</form>
			</div>
		</div>
	</div>
  
	<!-- Edit Modal HTML -->
	<div id="editEmployeeModal" class="modal fade">
		<div class="modal-dialog">
			<div class="modal-content">
				<form id="edit_user" name="edit_user">
<!--Modal Header-->
                  <div class="modal-header">						
						<h4 class="modal-title">Edit User</h4>
						<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
					</div>
                  <!--Modal Body-->
					<div class="modal-body">
						<input type="hidden" id="id_u" name="id" class="form-control" >					
						<div class="form-group">
							<label>Name</label>
							<input type="text" id="name_u" name="name" class="form-control" >
						</div>
						<div class="form-group">
							<label>Email</label>
							<input type="email" id="email_u" name="email" class="form-control" >
						</div>
						<div class="form-group">
							<label>PHONE</label>
							<input type="tel" id="phone_u" name="phone" class="form-control" >
						</div>
						<div class="form-group">
							<label>City</label>
							<input type="text" id="city_u" name="city" class="form-control" >
						</div>
						<div class="form-group">
							<label>Password</label>
							<input type="password" id="password_u" name="password" class="form-control" >
						</div>
						<div class="form-group">
							<label>Confirm Password</label>
							<input type="password" id="confirm_password_u" name="confirm_password" class="form-control" >
						</div>						
					</div>
					<div class="modal-footer">
					<input type="hidden" value="2" name="type">
						<input type="button" class="btn btn-default" data-dismiss="modal" value="Cancel">
						<button type="submit" class="btn btn-info" id="update">Update</button>
					</div>
				</form>
			</div>
		</div>
	</div>
	<!-- Delete Modal HTML -->
	<div id="deleteEmployeeModal" class="modal fade">
		<div class="modal-dialog">
			<div class="modal-content">
				<form>
						
					<div class="modal-header">						
						<h4 class="modal-title">Delete User</h4>
						<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
					</div>
					<div class="modal-body">
						<input type="hidden" id="id_d" name="id" class="form-control">					
						<p>Are you sure you want to delete these Records?</p>
						<p class="text-warning"><small>This action cannot be undone.</small></p>
					</div>
					<div class="modal-footer">
						<input type="button" class="btn btn-default" data-dismiss="modal" value="Cancel">
						<button type="button" class="btn btn-danger" id="delete">Delete</button>
					</div>
				</form>
			</div>
		</div>
	</div>
</body>
</html>   

Step 4: Perform CRUD Operation

  1. Insert the Data
  2. Edit the data
  3. Update the data
  4. Delete the data

Now we will insert the data, To edit the data, To update the data and To delete the data into our database. we shall create save.php on a single page.

To perform all CRUD operation like Insert, Modify, Update and Delete of the data in our database in save.php. write the below code.

<?php
include 'database.php';
if(count($_POST)>0){
	if($_POST['type']==1){
		$name=$_POST['name'];
		$email=$_POST['email'];
		$phone=$_POST['phone'];
		$city=$_POST['city'];
		$password=$_POST['password'];
		$sql = "INSERT INTO `crud`( `name`, `email`,`phone`,`city`,`password`) 
		VALUES ('$name','$email','$phone','$city',$password)";
		if (mysqli_query($conn, $sql)) {
			echo json_encode(array("statusCode"=>200));
		} 
		else {
			echo "Error: " . $sql . "<br>" . mysqli_error($conn);
		}
		mysqli_close($conn);
	}
}
if(count($_POST)>0){
	if($_POST['type']==2){
		$id=$_POST['id'];
		$name=$_POST['name'];
		$email=$_POST['email'];
		$phone=$_POST['phone'];
		$city=$_POST['city'];
		$password=$_POST['password'];
		$sql = "UPDATE `crud` SET `name`='$name',`email`='$email',`phone`='$phone',`city`='$city',password='$password' WHERE id=$id";
		if (mysqli_query($conn, $sql)) {
			echo json_encode(array("statusCode"=>200));
		} 
		else {
			echo "Error: " . $sql . "<br>" . mysqli_error($conn);
		}
		mysqli_close($conn);
	}
}
if(count($_POST)>0){
	if($_POST['type']==3){
		$id=$_POST['id'];
		$sql = "DELETE FROM `crud` WHERE id=$id ";
		if (mysqli_query($conn, $sql)) {
			echo $id;
		} 
		else {
			echo "Error: " . $sql . "<br>" . mysqli_error($conn);
		}
		mysqli_close($conn);
	}
}
if(count($_POST)>0){
	if($_POST['type']==4){
		$id=$_POST['id'];
		$sql = "DELETE FROM crud WHERE id in ($id)";
		if (mysqli_query($conn, $sql)) {
			echo $id;
		} 
		else {
			echo "Error: " . $sql . "<br>" . mysqli_error($conn);
		}
		mysqli_close($conn);
	}
}
?>

Step 5: Validate the form using jQuery

Here, we can Validate the Form using jQuery from the given table. We will validate all field using page ADD_USER and EDIT_USER. Basically, we are using two files listed below:-

  1. addUserValidate
  2. editUserValidate

In addUserValidate.js we validate all field on a separate page. Code is given below:-

// Wait for the DOM to be ready
$(function() {
  // Initialize form validation on the add user form.
  // It has the name attribute "user_form"
  $("form[name='user_form']").validate({
    // Specify validation rules
    rules: {
      name:
      {
        required: true,
      },
      email:
      {
        required: true,
      
      },
      phone:
      {
        required: true,
        minlength:10,
      },
      city:
      {
        required: true,
      },
      password: {
        required: true,
        minlength: 8
      },
      password_confirm: {
        required: true,
        minlength: 8,
        equalTo: "#password"
      },
   
    // Specify validation error messages
    messages: 
    {
      name:
      {
         required: "Please enter your name",
      },
    
      email:
      {
        required: "Please enter a valid email address",
      },
      phone:
      {
        required: "Please enter a valid phone no.",
      }, 
      city:
      {
        required: "Please enter your city name"
      },  
    },
       password: {
        required: "Please provide a password",
        minlength: "Your password must be at least 8 characters long"
      },
      password_confirm: {
        required: "Please enter same password",
      },
  },
    
    // Make sure the form is submitted to the destination defined
    // in the "action" attribute of the form when valid
    submitHandler: function(form) {
      var data = $("#user_form").serialize();
		$.ajax({
			data: data,
			type: "post",
			url: "save.php",
			success: function(dataResult){
					var dataResult = JSON.parse(dataResult);
					if(dataResult.statusCode==200){
						// dataResult.preventDefault();
						$('#addEmployeeModal').modal('hide');
						alert('Data added successfully !'); 
						location.reload();						
					}
					else if(dataResult.statusCode==201){
					   alert(dataResult);
					}
			}
		});
    }
  });
});

In editUserValidate.js we validate all field on a separate page. Code is given below:-

$(function() {

    // Initialize form validation on the edit user form.
    // It has the name attribute "edit_user"
    $("form[name='edit_user']").validate({
      // Specify validation rules
      rules: {
        name:
        {
          required: true,
        },
        email:
        {
          required: true,
        
        },
        phone:
        {
          required: true,
          minlength:10,
        },
        city:
        {
          required: true,
        },
        password: {
          required: true,
          minlength: 8
        },
        confirm_password: {
          required: true,
          minlength: 8,
          equalTo: "#password_u"
        },
      },
      // Specify validation error messages
      messages: 
      {
        name:
        {
           required: "Please enter your name",
        },
      
        email:
        {
          required: "Please enter a valid email address",
        },
        phone:
        {
          required: "Please enter a valid phone no.",
        }, 
        city:
        {
          required: "Please enter your city name"
        },  
      password: {
          required: "Please provide a password",
          minlength: "Your password must be at least 8 characters long"
        },
        confirm_password: {
          required: "Please enter same password",
        },
      },
        // Make sure the form is submitted to the destination defined
        // in the "action" attribute of the form when valid
        submitHandler: function(form) {
            var data = $("#edit_user").serialize();
            $.ajax({
                data: data,
                type: "post",
                url: "save.php",
                success: function(dataResult){
                    var dataResult = JSON.parse(dataResult);
                    if(dataResult.statusCode==200){
                        $('#editEmployeeModal').modal('hide');
                        alert('Data updated successfully !'); 
                        location.reload();						
                    }
                    else if(dataResult.statusCode==201){
                        alert(dataResult);
                    }
                }
            });
        }
    });
});

Step 6:  To build a dynamic, form-based Web application using Ajax.

 suppose a user fills out a form to add data to a database table. Without Ajax, the validity of data in the form is not checked until the form is submitted. With Ajax, the data added to the form can be dynamically validated as the data is added to form fields using business logic in a server application. Thus, a complete form does not have to be posted to the server to check if the data in the form is valid.

For this, we have to create ajax.js and attached this file to index.html. write the below code.

	$(document).on('click','.update',function(e) {
		var id=$(this).attr("data-id");
		var name=$(this).attr("data-name");
		var email=$(this).attr("data-email");
		var phone=$(this).attr("data-phone");
		var city=$(this).attr("data-city");
		var password=$(this).attr("data-password");
		var confirm_password=$(this).attr("data-confirm_password");
	
		$('#id_u').val(id);
		$('#name_u').val(name);
		$('#email_u').val(email);
		$('#phone_u').val(phone);
		$('#city_u').val(city);
		$('#password_u').val(password);
		$('#confirm_password_u').val(confirm_password);
	});
	$(document).on("click", ".delete", function() { 
		var id=$(this).attr("data-id");
		$('#id_d').val(id);
		
	});
	$(document).on("click", "#delete", function() { 
		$.ajax({
			url: "save.php",
			type: "POST",
			cache: false,
			data:{
				type:3,
				id: $("#id_d").val()
			},
			success: function(dataResult){
					$('#deleteEmployeeModal').modal('hide');
					$("#"+dataResult).remove();
			
			}
		});
	});
	$(document).on("click", "#delete_multiple", function() {
		var user = [];
		$(".user_checkbox:checked").each(function() {
			user.push($(this).data('user-id'));
		});
		if(user.length <=0) {
			alert("Please select records."); 
		} 
		else { 
			WRN_PROFILE_DELETE = "Are you sure you want to delete "+(user.length>1?"these":"this")+" row?";
			var checked = confirm(WRN_PROFILE_DELETE);
			if(checked == true) {
				var selected_values = user.join(",");
				console.log(selected_values);
				$.ajax({
					type: "POST",
					url: "save.php",
					cache:false,
					data:{
						type: 4,						
						id : selected_values
					},
					success: function(response) {
						var ids = response.split(",");
						for (var i=0; i < ids.length; i++ ) {	
							$("#"+ids[i]).remove(); 
						}	
					} 
				}); 
			}  
		} 
	});
	$(document).ready(function(){
		$('[data-toggle="tooltip"]').tooltip();
		var checkbox = $('table tbody input[type="checkbox"]');
		$("#selectAll").click(function(){
			if(this.checked){
				checkbox.each(function(){
					this.checked = true;                        
				});
			} else{
				checkbox.each(function(){
					this.checked = false;                        
				});
			} 
		});
		checkbox.click(function(){
			if(!this.checked){
				$("#selectAll").prop("checked", false);
			}
		});
	})

Step 7: Test the code

Now we will test the whole code, is this working fine or not. To test the code visit the URL http://localhost/learn-php/validateFormUsingJquery in your browser.

Form Validation using jQuery in PHP.png
Here we are clicking on Add New User button for insert new user details

Now click on add new user button to insert the data into it.

add_user.png
when we click on Add without filling all then we get validation message is shown below
add_user_validate.png
all fields are required.

Then, we have to fill in all detail and remove each validation one by one.

add_user_validate.png
here, we are filling the name of the given field.
add_user_validate.png
here, we are filling the email of the given field.
add_user_validate.png
fill the phone number with at least 10 characters
add_user_validate.png
here, we are filling the city name
add_user_validate.png
fill the password which must contain at least 8 character long
add_user_validate.png
here, we must enter same value of the given password

Now we will edit the page, click on edit icon.

edit_user_validate.png

when you want to submit EDIT_USER by click on update then, you must fill all field because it is a required field and you can validate each field..

edit_user_validate.png
all field is required field.

Now we will update the page, click on the update button.

edit_user_validate.png
password should be matched.

when we click on the update button, then we got an alert message “Data Uploaded Successfully!!!

Now we will delete the details from the page, click on the delete button/icon.

Here we shall have 3 option, To delete the user details :-

  1. Delete the data from a single column.
  2. Select one or more data to remove from the table by using the checkbox.
  3. Select all to remove the entire data from the table.

1. DELETE THE DATA FROM A SINGLE COLUMN.

deleteUserSingle.png
remove single user detail by clicking on Delete Icon.

2. Select one or more data to remove from the table by using the checkbox.

deleteUserMultiple.png
select multiple user to remove from given table.

3.Select all to remove the entire data from the table.

deleteUserAll.png
select all for remove entire user details.

when we delete all the data from the table then we got an empty table as below.

emptyPage.png
0 0 vote
Article Rating

Do you want to hire us for your Project Work? Then Contact US.
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
0
Would love your thoughts, please comment.x
()
x