Save Uploaded File in Folder Using Jquery

php file upload

Uploading files from clients to servers is one of the important features of whatsoever PHP application. All the same, the implementation of features with proper security and hassle-gratis configuration could be tricky. Developers could use several PHP file upload scripts to ensure that the application offers this characteristic seamlessly.

Prerequisites
The Procedure of File Uploading in PHP
Create the HTML Form
Using jQuery & AJAX for File Upload Grade
Configure and Connect MySQL Database With PHP
Create a PHP Script for File Uploading
Check if there are any errors in the upload
Check that the file is under the set file size limit
How to Apply reCAPTCHA in PHP Contact Course?
Wrapping Upwardly

I will discuss a popular strategy that developers could integrate within their projects. In this article, I will show you how you can add PHP file upload functionality on your website using jQuery, AJAX, and MySQL.

Prerequisites

For this PHP file uploading example, I assume that you have a PHP application installed on a web server. My setup is:

PHP vii.1
MySQL
JQuery/Ajax file

To make sure that that I don't get distracted by server-level problems, I decided to host my PHP application on Cloudways managed servers because it takes intendance of server-level issues and has a great devstack right out of the box. You can try out Cloudways for complimentary past signing for an account.

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Now, that the configurations are fix, I will adjacent work on the File Uploading Script.

Related Articles:

Multiple Images and Files Upload in Laravel with Validation

Upload Paradigm and File in CodeIgniter

The Process of File Uploading in PHP

The process of a complete PHP file uploading script is as follows:

Create a Bootstrap powered HTML Upload form equally the "frontend" of the script
Ajax scripts for file upload
Apply security checks
Create PHP scripts to handle/process information

Create the HTML Course

The HTML form is the interface through which the user interacts and submits the data. But to make the form work with the file, <form> element must have its method set up to POST because files can not be sent to servers using the GET method.

Another important attribute is enctype which should be fix to multipart/class-information. Final but not least, the file <input> blazon attribute should exist set to file.

Create a file index .php in your PHP project and type in the following code.

<!doctype html> <html> <caput lang="en"> <meta charset="utf-8"> <title>Ajax File Upload with jQuery and PHP</title> <link rel="stylesheet" href="style.css" type="text/css" /> <script type="text/javascript" src="js/jquery-one.xi.3-jquery.min.js"></script> <script type="text/javascript" src="js/script.js"></script>  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.iii.seven/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> </head> <body> <div grade="container"> <div class="row">  <div class="col-md-eight">  <h1><a href="#" target="_blank"><img src="logo.png" width="80px"/>Ajax File Uploading with Database MySql</a></h1> <hr>   <grade id="course" action="ajaxupload.php" method="mail" enctype="multipart/course-data"> <div class="grade-grouping"> <characterization for="proper noun">Proper name</characterization> <input blazon="text" class="grade-control" id="name" name="name" placeholder="Enter name" required /> </div> <div class="class-group"> <label for="email">EMAIL</characterization> <input blazon="electronic mail" form="form-control" id="e-mail" name="electronic mail" placeholder="Enter email" required /> </div>  <input id="uploadImage" type="file" have="image/*" name="image" /> <div id="preview"><img src="filed.png" /></div><br> <input class="btn btn-success" type="submit" value="Upload"> </form>  <div id="err"></div> <60 minutes> <p><a href="https://www.cloudways.com" target="_blank">www.Cloudways.com</a></p> </div> </div> </div></body></html>

html ajax file uploading form

In this grade, I have used Bootstrap Classes to apply a little scrap of styling on the form. In this form, I have mentioned ajaxupload.php in the action aspect of the grade.

End Wasting Time on Servers

Cloudways handle server direction for you then you can focus on creating great apps and keeping your clients happy.

Using jQuery & AJAX for File Upload Grade

Since I volition use jQuery & AJAX for submitting information and uploading the files, I will beginning by including the jQuery library first.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

$(certificate).ready(function (e) {  $("#form").on('submit',(role(east) {   e.preventDefault();   $.ajax({          url: "ajaxupload.php",    type: "POST",    data:  new FormData(this),    contentType: false,          enshroud: faux,    processData:simulated,    beforeSend : office()    {     //$("#preview").fadeOut();     $("#err").fadeOut();    },    success: function(data)       {     if(data=='invalid')     {      // invalid file format.      $("#err").html("Invalid File !").fadeIn();     }     else     {      // view uploaded file.      $("#preview").html(data).fadeIn();      $("#form")[0].reset();      }       },      fault: function(eastward)        {     $("#err").html(eastward).fadeIn();       }               });  })); });

In the above code using the $ajax() method for sending data to php also check the success data or fault in data sending.

Configure and Connect MySQL Database With PHP

The next step is setting up and configuring the MySQL database. Become to the Cloudways Database Manager and create a table named 'uploading'. The fields of this table are name, electronic mail, file_name. Alternatively, you lot could utilise the following SQL query:

CREATE TABLE `uploading` (  `id` int(11) Not NULL AUTO_INCREMENT,  `name` varchar(100) COLLATE utf8_unicode_ci Non Nil,  `electronic mail` varchar(100) COLLATE utf8_unicode_ci NOT NULL,  `file_name` varchar(100) COLLATE utf8_unicode_ci Not Null,  PRIMARY Key (`id`)  ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

Next, create db.php to connect the database with the PHP awarding. Paste the following lawmaking snippet in the file:

<?php  //DB details  $dbHost = 'localhost';  $dbUsername = 'fkmc';  $dbPassword = '';  $dbName = 'fkc';  //Create connexion and select DB  $db = new mysqli($dbHost, $dbUsername, $dbPassword, $dbName);  if($db->connect_error){     dice("Unable to connect database: " . $db->connect_error);  }

Create a PHP Script for File Uploading

When the user interacts with this class, the file is uploaded to the temporary folder and all the data about the file is stored in the multidimensional array known as $_FILES .The Key Alphabetize of this array is the proper name attribute on this <input type=''file' proper noun="image" > field.

In this case, $_FILES["image"] is the alphabetize name.more information about the file is stored in the post-obit indexes.

<?php  $img = $_FILES["image"]["name"] stores the original filename from the client $tmp = $_FILES["epitome"]["tmp_name"] stores the name of the designated temporary file $errorimg = $_FILES["paradigm"]["error"] stores any mistake code resulting from the transfer ?>

In one case the file has been uploaded to the temporary folder and all its information saved in the assortment, the move_uploaded_file() function is used to movement the file from its nowadays temporary location to a permanent location. The process of uploading the file is as follows:

Cheque if there are whatever errors in the upload.
Check if the file type is allowed
Check that the file is under the set file size limit
Check if the filename is valid (if the filename has a /, it will affect the destination path).
Bank check that the file doesn't already exist at the target location (based on the name).
Finally, upload the file.

Let's create the PHP script to deal with the functionality of file uploading. Create ajaxupload .php and type the post-obit lawmaking in information technology.

<?php  $valid_extensions = array('jpeg', 'jpg', 'png', 'gif', 'bmp' , 'pdf' , 'doc' , 'ppt'); // valid extensions $path = 'uploads/'; // upload directory  if(!empty($_POST['name']) || !empty($_POST['email']) || $_FILES['prototype']) { $img = $_FILES['paradigm']['name']; $tmp = $_FILES['image']['tmp_name'];  // go uploaded file's extension $ext = strtolower(pathinfo($img, PATHINFO_EXTENSION));  // can upload same epitome using rand function $final_image = rand(yard,1000000).$img;  // check's valid format if(in_array($ext, $valid_extensions))  {  $path = $path.strtolower($final_image);   if(move_uploaded_file($tmp,$path))  { echo "<img src='$path' />"; $proper noun = $_POST['name']; $email = $_POST['email'];  //include database configuration file include_once 'db.php';  //insert course data in the database $insert = $db->query("INSERT uploading (name,email,file_name) VALUES ('".$name."','".$email."','".$path."')");  //repeat $insert?'ok':'err'; } }  else  { repeat 'invalid'; } } ?>

At present that all the checks take been coded in, I will motility the uploaded file from the tmp folder to the upload folder. For this, starting time, create an upload folder in the projection directory. This is where the uploaded pictures will be saved. Where pathinfo() is the built-in function which will render the filename and extension in separate indexes.

Cheque if at that place are whatever errors in the upload

To check the error in the uploaded file, type in the following lawmaking, If the fault is greater than zero then there must be an error in the process.

if($errorimg > 0){     die('<div course="alarm alert-danger" role="alert"> An error occurred while uploading the file </div>');  }

Check that the file is under the set file size limit

The file size is measured in bytes. So, if the file size is fix at 500kb, then the file size should exist less than 500000.

if($myFile['size'] > 500000){     dice('<div grade="alert alert-danger" part="alert"> File is too big </div>');  }

Where move_uploaded_file is the function which volition move the file from $myFile["tmp_name"] (temporary location) to "upload/" . $proper noun (permanent location) also check the database table tape volition be inserted.

insert file in database

How to Use reCAPTCHA in PHP Contact Form?

Recaptcha is a gratuitous service that protects forms from spamming and abusive submission. It's an boosted layer that works behind-the-scenes to forbid whatever spamming by differentiating if the finish-user is a human or a bot, and give them the challenge to solve.

To identify a reCAPTCHA on your PHP website, y'all must use a simple library that wraps around a reCHAPTCHA API. Y'all can download the "reCAPTCHA PHP Library" and then use the file 'recaptchalib.php'.

Add the following code in the <form> tag where y'all want your reCAPTCHA to exist placed:

require_once('recaptchalib.php'); $publickey = "your_public_key"; //you got this from the signup page echo recaptcha_get_html($publickey);

To check whether the users have submitted the right answers or non, a "verify.php" file needs to be created and should be prepare every bit an 'action' parameter in the <form> tag. Here is the lawmaking below:

<?php   require_once('recaptchalib.php');   $privatekey = "your_private_key";   $resp = recaptcha_check_answer ($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);   if (!$resp->is_valid) {     dice ("The reCAPTCHA wasn't entered correctly. Go dorsum and try it again." .          "(reCAPTCHA said: " . $resp->fault . ")");   }    else {     // Your code here to handle a successful verification   } ?>

Q: How to modify the maximum upload file size in PHP?

A: To upload PHP scripts, the default maximum upload size is 128 MB. However, you can always increment its upload limit by editing the upload_max_filesize value from the php.ini file.

Q: Which the best PHP library for file uploading?

A: Though at that place are several files uploading PHP libraries available in the market, the best ane to use is the HTML5 File Upload library. Information technology is very easy to employ and the most pop library amid the developers, as it simplifies file uploading and validation in a few quick steps.

Q: Where tin can I download the PHP file upload script?

A: You can hands download file uploading script from phpfileuploader.com, it provides an easy to use and highly avant-garde file uploading script that precisely upload files to the server without refreshing the page. Using the script, you lot can easily upload multiple files and new additional files during the upload process.

Q: How to move uploaded files in PHP?

A: To move the uploaded file to a new path/directory, you tin can use the move_uploaded_file() part to operate. It allows us to hands move the files to a new location even if they are newly uploaded. Upon successful transfer, it returns True and if caught any exception, returns FALSE.

Wrapping Up

In this tutorial, I demonstrated prototype and file upload in PHP using AJAX and jQuery. Hither is a functional demo of the application where you could meet the app in action. In my side by side tutorial, I will demonstrate how you could upload and store a file into the database using PDO .

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Saquib Rizwan

Saquib is a PHP Community Skilful at Cloudways - A Managed PHP Hosting Cloud Platform. He is well versed in PHP and regularly contributes to open source projects. For fun, he enjoys gaming, movies and hanging out with friends. You can email him at [email protected]

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Source: https://www.cloudways.com/blog/the-basics-of-file-upload-in-php/