PHP Image Upload Using jQuery and MySQL

This is another image upload tutorial using PHP, jQuery and MySQL. I have already shared the tutorial Image Upload,Crop and Resize Using PHP, jQuery and Ajax.

This tutorial is uploading images to a folder and stores image names into the database table. I am not cropping or resizing images, it’s a simple PHP image upload tutorial.

You can also use the modal box for image upload with help of Image Crop Functionality In Model Box Using PHP tutorial.

I am using jQuery to submit an image and process server-side data so this tutorial helps to ajax based image upload using PHP and jQuery.

• jQuery Library: Base library to support other jquery plugins.
• Boostrap 3: Used to create the awesome HTML layout
• Index.php: This is the main file of this project that will contain HTML code with file upload FORM and jquery code to submit the form.
• connection.php: Use to create a database connection with MySQL.
• upload.php: This file contains PHP code to upload an image into a folder and save the image name into the database table.

Simple PHP Image Upload Using AJAX and MySQL

I will create d:/image_upload_code folder and create index.php file into this folder. We will create test database and users_image table, We will create a table using the below SQL.

CREATE TABLE IF NOT EXISTS `users_image` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user` varchar(255) DEFAULT NULL,
`pass` varchar(100) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`profile_photo` varchar(200) DEFAULT NULL,
PRIMARY KEY (`uid`),
UNIQUE KEY `username` (`user`),
UNIQUE KEY `email` (`email`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;

The table users_image will contain user details user, pass, email and profile_photo.

Step 1: We will create connection.php file and add the below code into this file to create a database connection with MySQL.

<?php
Class dbObj{
    /* Database connection start */
    var $servername = "localhost";
    var $username = "root";
    var $password = "";
    var $dbname = "test1";
    var $conn;
    function getConnstring() {
        $con = mysqli_connect($this->servername, $this->username, $this->password, $this->dbname) or die("Connection failed: " . mysqli_connect_error());

        /* check connection */
        if (mysqli_connect_errno()) {
            printf("Connect failed: %s\n", mysqli_connect_error());
            exit();
        } else {
            $this->conn = $con;
        }
        return $this->conn;
    }
}
?>

You can change dbname, servername, username and password variable value as per your database credentials.

Step 2: We will add bootstrap and jQuery library files into the head section of index.php file.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

Step 3: We will create an HTML form into index.php file.

Added upload.php file into the action of a form element. We will add jQuery code to submit form ajax manner using jQuery.

<form id="image_upload_form" action="upload.php" autocomplete="off" enctype="multipart/form-data" method="post">
	<div class="alert alert-danger hide">&nbsp;</div>
	<div class="alert alert-success hide">&nbsp;</div>
	<div class="col-md-6">
	<div class="form-group"><label>Upload Image</label>
	<p>&nbsp;</p>
	<div class="input-group"><input id="input_image_text" class="form-control" readonly="readonly" type="text" /> <span class="input-group-btn"> <span class="btn btn-success btn-file"> Browse… <input id="photoimg" name="photoimg" type="file" /> </span> <button class="btn btn-warning" type="submit"> <i class="glyphicon glyphicon-upload"></i> upload </button> </span></div>
	</div>
	</div>
</form>

Step 4: We will add jQuery code to submit the form into the footer of index.php.

I have added code to set filename into input text. I have also added submit form jquery code, to submit form data into the server side when the user will click submit button.

jQuery(document).ready(function(){
    $('#photoimg').on('change', function() {
        var label = $(this).val().replace(/\\/g, '/').replace(/.*\//, ''),
         input = $('#input_image_text').val(label);
         $('.alert').addClass('hide');
         $('.alert').removeClass('show');

    });

    var frm = $('#image_upload_form');

    frm.submit(function (e) {
    	e.preventDefault();
    	var formData = new FormData();
        formData.append('photoimg', $('#photoimg')[0].files[0]);

        
        $.ajax({
            type: frm.attr('method'),
            url: frm.attr('action'),
            data: formData,
            dataType: "json",
            processData: false,  // tell jQuery not to process the data
       contentType: false,  // tell jQuery not to set contentType

            success: function (data) {
                console.log(data['error']);
                if(data.error == 1) {
                	$('.alert-danger').removeClass('hide').addClass('show').html(data['msg']);
                } else {
                	$('.alert-success').removeClass('hide').addClass('show').html('Uploaded');
                console.log(data);
                }
                
            },
            error: function (data) {
                console.log(data);
                $('.alert-danger').removeClass('hide').addClass('show').html(data);
            },
        });
        });  
    });

Step 5: We will create an upload.php file and add the below code.

<?php
include_once("connection.php");
    
$db = new dbObj();
$connString =  $db->getConnstring();

$path = "images/";
$valid_file_formats = array("jpg", "png", "gif", "bmp","jpeg");
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST")
{
    $name = $_FILES['photoimg']['name'];
    $size = $_FILES['photoimg']['size'];
    //print_R($_POST);die;
    if(strlen($name)) {
        list($txt, $ext) = explode(".", $name);
        if(in_array($ext,$valid_file_formats)) {
            if($size<(1024*1024)) {
                $user_id = 1;
                $image_name = time().'_'.$user_id.".".$ext;
                $tmp = $_FILES['photoimg']['tmp_name'];
            if(move_uploaded_file($tmp, $path.$image_name)){
                
                $sql = "UPDATE users_image SET image='".$image_name."' WHERE id=$user_id";
        
                $result = mysqli_query($connString, $sql) or die("error to update image data");

                echo json_encode(array('error'=>0, 'msg' => "Successfully!  Uploaded image.."));
            }
            else
                echo json_encode(array('error'=>1, 'msg' => "Image Upload failed..!"));
            }
            else
                echo json_encode(array('error'=>1, 'msg' => "Image file size maximum 1 MB..!"));
        }
        else
            echo json_encode(array('error'=>1, 'msg' => "Invalid file format..!"));
    }
    else
        echo json_encode(array('error'=>1, 'msg' => "Please select image..!"));
    exit;
}
?>

You can download source code and see Demo from below link.