How to Save and Load Data from Database Without refreshing the page using PHP and Ajax

Submitted by argie on Thursday, January 28, 2021 - 11:46.

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Hi everyone, The feature of this tutorial is it allows you to save data to the database and display data from the database without refreshing the page. I used Ajax and PHP in this tutorial. Our goal for this tutorial is to create a simple web application that has a simple form that will result an automatic load the data after the success response of saving the data. To start the coding let's follow the steps provided below.

Requirements:

Download and Install any local web-server such as XAMPP/WAMP.

Step 1: Creating Our Database

To create a database:

If you are using XAMPP/WAMP, open the XAMPP/WAMP's Control Panel and strat "Apache" and "MySQL".
Open PHPMyAdmin in a web browser. [http://localhost/phpmyadmin]
Create a new database naming "ajaxphp".
After creating a database name, click the SQL and paste the below code.

CREATE TABLE IF NOT EXISTS `add_delete_record` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `content` text NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=0 ;

Step 2: Creating Our Form

In this we will create our form that display the data from database. To create our form copy the code below and save it as "index.php".

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Save and load data without leaving the page using PHP and Ajax</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script>
 
<script type="text/javascript">
$(document).ready(function() {
 
	//##### Add record when Add Record Button is click #########
	$("#content-form").submit(function (e) {
			e.preventDefault();
			if($("#contentText").val()==='')
			{
				alert("Please enter some text!");
				return false;
			}
		 	var myData = 'content_txt='+ $("#contentText").val(); //build a post data structure
			jQuery.ajax({
			type: "POST", // Post / Get method
			url: "response.php", //Where form data is sent on submission
			dataType:"text", // Data type, HTML, json etc.
			data:myData, //Form variables
			success:function(response){
				$("#responds").append(response);
				$('#contentText').val("")
			},
			error:function (xhr, ajaxOptions, thrownError){
				alert(thrownError);
			}
			});
	});
 
});
</script>
<style>
.form_style #textarea {
	border: 1px solid #CCCCCC;
}
 
.form_style #FormSubmit {
	display: block;
	background: #003366;
	border: 1px solid #000066;
	color: #FFFFFF;
	margin-top: 5px;
}
#responds{
	margin: 0px;
	padding: 0px;
	list-style: none;
	width:100%;
}
#responds li{
	list-style: none;
	padding: 10px;
	background: #D1CFCE;
	margin-bottom: 5px;
	border-radius: 5px;
	font-family: arial;
	font-size: 13px;
}
.del_wrapper{float:right;}.content_wrapper {
	width: 500px;
	margin-right: auto;
	margin-left: auto;
}
.item-list{
	text-align: left;
}
#contentText{
	width: 100%;
}
</style>
</head>
<body align="middle">
	<h3><strong>Save and Load Data without leaving the page using PHP and Ajax</strong></h3>
	<hr>
<div class="content_wrapper">
<div class="form_style">
 
	<form id="content-form">
	    <textarea name="content_txt" id="contentText" cols="45" rows="5"></textarea>
	    <br>
	    <button id="FormSubmit">Add record</button>
    </form>
<br>
</div>
<ul id="responds">
<?php
//include db configuration file
include_once("config.php");
 
//MySQL query
$Result = mysqli_query($connecDB,"SELECT id,content FROM add_delete_record");
 
//get all records from add_delete_record table
while($row = mysqli_fetch_array($Result))
{
  echo '<li id="item_'.$row["id"].'" class="item-list">';
  echo $row["content"].'</li>';
}
 
//close db connection
?>
</ul>  
</div>
</body>
</html>

Step 3: Create Our Database Connection

Copy the code bellow and save it as "config.php".

<?php
$username = "root"; //mysql username
$password = ""; //mysql password
$hostname = "localhost"; //hostname
$databasename = 'ajaxphp'; //databasename
 
$connecDB = mysqli_connect($hostname, $username, $password, $databasename)or die('Could not connect to the database');
?>

Step 4: Writing Our Save Script

In this step we write the code that save the data without loading the page. Copy the code bellow and save it as "response.php".

<?php
//include db configuration file
include_once("config.php");
 
if(isset($_POST["content_txt"]) && strlen($_POST["content_txt"])>0) 
{	
	$contentToSave = filter_var($_POST["content_txt"],FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH); 
 
	if(mysqli_query($connecDB,"INSERT INTO add_delete_record(content) VALUES('$contentToSave')"))
	{
		  $my_id = mysqli_insert_id($connecDB);
		  echo '<li id="item_'.$my_id.'" class="item-list">';
		  echo $contentToSave.'</li>';
 
	}
 
}
?>

That's all you've successfully created your system that saves and displays data from the database without refreshing the page. Thank you for always following and giving positive comments for my tutorials.

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