In this article, we will learn how to make a 5-star rating system in PHP using the jQuery plugin, It is very useful to give rate today specific content on a website.
Let's follow the following steps to make 5 star rating system in PHP:
Step 1:
We need two database tables myposts and post_rating use the following code to create tables.
ratting.sql
-- phpMyAdmin SQL Dump
-- version 5.0.4
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Jan 30, 2021 at 09:41 PM
-- Server version: 10.4.17-MariaDB
-- PHP Version: 7.3.25
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
START TRANSACTION;
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
--
-- Database: `php-tutorial`
--
-- --------------------------------------------------------
--
-- Table structure for table `myposts`
--
CREATE TABLE `myposts` (
`id` int(11) NOT NULL,
`title` varchar(250) COLLATE utf8_unicode_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
--
-- Dumping data for table `myposts`
--
INSERT INTO `myposts` (`id`, `title`) VALUES
(1, 'PUBG Mobile India Full Game Download Android And iOS'),
(2, 'Using htaccess to deny access to files and directories'),
(3, 'Bluestacks - How to play mobile games in PC'),
(4, 'Avada - Website Builder For WordPress and WooCommerce download as free'),
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--
-- Indexes for dumped tables
--
--
-- Indexes for table `myposts`
--
ALTER TABLE `myposts`
ADD PRIMARY KEY (`id`);
--
-- AUTO_INCREMENT for dumped tables
--
--
-- AUTO_INCREMENT for table `myposts`
--
ALTER TABLE `myposts`
MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=149;
COMMIT;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
Step 2:
We need some files in the jQuery 5-star rating plugin, see my project structure
php-tutorial/
┣ plugins/
┃ ┗ star-ratting/
┃ ┣ fontawesome-stars.css
┃ ┗ jquery.barrating.min.js
┣ index.php
┣ init.php
┗ rating.php
plugins you can download from here https://github.com/antennaio/jquery-bar-rating
Step 3:
make files and put the following codes as it is
init.php
<?php
$host = "localhost";
$user = "root";
$password = "";
$dbname = "demo";
$con = mysqli_connect($host, $user, $password, $dbname);
// Check connection
if (!$con) {
die("Connection failed: " . mysqli_connect_error());
}index.php
<?php include "init.php"; ?>
<!DOCTYPE html>
<html>
<head>
<title>JQuery Star Ratting in PHP</title>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/font-awesome/latest/css/font-awesome.min.css">
<!-- you can get from here https://github.com/antennaio/jquery-bar-rating -->
<link href="plugins/star-ratting/fontawesome-stars.css" rel="stylesheet" type="text/css"/>
<script src="https://code.jquery.com/jquery-3.5.1.min.js" type="text/javascript"></script>
<script src="plugins/star-ratting/jquery.barrating.min.js" type="text/javascript"></script>
<script>
$(document).ready(function() {
$('.rating').barrating({
theme: 'fontawesome-stars',
onSelect: function(value, text, event) {
// Get element id by data-id attribute
var el = this;
var el_id = el.$elem.data('id');
// rating was selected by a user
if (typeof (event) !== 'undefined') {
var split_id = el_id.split("_");
var postid = split_id[1]; // postid
// AJAX Request
$.ajax({
url: 'rating.php',
type: 'post',
data: {postid: postid, rating: value},
dataType: 'json',
success: function(data) {
// Update average
var average = data['averageRating'];
$('#avgrating_' + postid).text(average);
}
});
}
}
});
});
</script>
<style>
body{
background: #ccc;
}
.post{
margin: 20px;
background: #fff;
padding: 20px;
}
</style>
</head>
<body>
<div class="content">
<?php
$userid = 4;
$query = "SELECT * FROM myposts";
$result = mysqli_query($con, $query);
while ($row = mysqli_fetch_array($result)) {
$postid = $row['id'];
$title = $row['title'];
// User rating
$query = "SELECT * FROM post_rating WHERE postid=" . $postid . " and userid=" . $userid;
$userresult = mysqli_query($con, $query) or die(mysqli_error());
$fetchRating = mysqli_fetch_array($userresult);
$rating = $fetchRating['rating'];
// get average
$query = "SELECT ROUND(AVG(rating),1) as averageRating FROM post_rating WHERE postid=" . $postid;
$avgresult = mysqli_query($con, $query) or die(mysqli_error());
$fetchAverage = mysqli_fetch_array($avgresult);
$averageRating = $fetchAverage['averageRating'];
if ($averageRating <= 0) {
$averageRating = "No rating yet.";
}
?>
<div class="post">
<div class="post-text">
<?php echo $title; ?>
</div>
<div class="post-action">
<!-- Rating -->
<select class='rating' id='rating_<?php echo $postid; ?>' data-id='rating_<?php echo $postid; ?>'>
<option value="1" >1</option>
<option value="2" >2</option>
<option value="3" >3</option>
<option value="4" >4</option>
<option value="5" >5</option>
</select>
<div style='clear: both;'></div>
Average Rating : <span id='avgrating_<?php echo $postid; ?>'><?php echo $averageRating; ?></span>
<!-- Set rating -->
<script type='text/javascript'>
$(document).ready(function() {
$('#rating_<?php echo $postid; ?>').barrating('set',<?php echo $rating; ?>);
});
</script>
</div>
</div>
<?php
}
?>
</div>
</body>
</html>
rating.php
<?php
include "init.php";
$userid = 4; // User id
$postid = $_POST['postid'];
$rating = $_POST['rating'];
// Check entry within table
$query = "SELECT COUNT(*) AS cntpost FROM post_rating WHERE postid=" . $postid . " and userid=" . $userid;
$result = mysqli_query($con, $query);
$fetchdata = mysqli_fetch_array($result);
$count = $fetchdata['cntpost'];
if ($count == 0) {
$insertquery = "INSERT INTO post_rating(userid,postid,rating) values(" . $userid . "," . $postid . "," . $rating . ")";
mysqli_query($con, $insertquery);
} else {
$updatequery = "UPDATE post_rating SET rating=" . $rating . " where userid=" . $userid . " and postid=" . $postid;
mysqli_query($con, $updatequery);
}
// get average
$query = "SELECT ROUND(AVG(rating),1) as averageRating FROM post_rating WHERE postid=" . $postid;
$result = mysqli_query($con, $query) or die(mysqli_error());
$fetchAverage = mysqli_fetch_array($result);
$averageRating = $fetchAverage['averageRating'];
$return_arr = array("averageRating" => $averageRating);
echo json_encode($return_arr);
Output:
