Php Dispaly Uploaded Files Available to View
Uploading files, images, and videos using PHP is equally easy every bit adding a couple of scripts. This guide will prove you 2 unlike ways on how to add php file upload functionality to your site:
- The Simple PHP Style – This is the simplest way of calculation a PHP uploader to your service. The upside is that you have complete control of the files being uploaded.
- Filestack's PHP File Upload Service – This is an easier style of adding PHP upload functionality. The upside is that you practice not have to manage the complex file upload infrastructure behind-the-scenes.
Permit'southward become started with some easy examples:
PHP File Upload – The Simple Way
To start, we'll create the following:
1. The HTML Course
First, nosotros'll create an HTML form that the user will come across when they want to upload the file. Create a new folder for this instance projection, and within it, create an index.html file with the following code:
<!DOCTYPE html> <html lang="en"> <caput> <meta charset="UTF-8"> <title>PHP File Upload</title> </head> <body> <form action="fileUploadScript.php" method="post" enctype="multipart/course-data"> Upload a File: <input type="file" name="the_file" id="fileToUpload"> <input type="submit" name="submit" value="Showtime Upload"> </form> </torso> </html> A couple important things to notice in the example above:
-
activeness="fileUploadScript.php"– This references the PHP script that will handle the file upload on the backend -
method="post"– This tells the browser activity the grade volition utilise when sending the file to the server (for uploads, this is near ever a Post activity, sometimes a PUT) -
enctype="multipart/form-data"– This determines the content-type that the grade submits
Next, open your terminal and from the directory where yous created the file, start the PHP server:
And then, open up your web browser and go to localhost:1234. You lot should see something like this:
ii. The PHP File Upload Script
Next, we'll handle the backend of the file upload. First, in the same directory, create a new directory called uploads. This will be where our script will save the files.
Then, in the same directory as index.html, create a file called fileUploadScript.php. Notice that this is the same name equally the activeness aspect in the form. Then add together this lawmaking:
<?php $currentDirectory = getcwd(); $uploadDirectory = "/uploads/"; $errors = []; // Store errors here $fileExtensionsAllowed = ['jpeg','jpg','png']; // These will exist the only file extensions allowed $fileName = $_FILES['the_file']['name']; $fileSize = $_FILES['the_file']['size']; $fileTmpName = $_FILES['the_file']['tmp_name']; $fileType = $_FILES['the_file']['type']; $fileExtension = strtolower(end(explode('.',$fileName))); $uploadPath = $currentDirectory . $uploadDirectory . basename($fileName); if (isset($_POST['submit'])) { if (! in_array($fileExtension,$fileExtensionsAllowed)) { $errors[] = "This file extension is not allowed. Please upload a JPEG or PNG file"; } if ($fileSize > 4000000) { $errors[] = "File exceeds maximum size (4MB)"; } if (empty($errors)) { $didUpload = move_uploaded_file($fileTmpName, $uploadPath); if ($didUpload) { echo "The file " . basename($fileName) . " has been uploaded"; } else { echo "An fault occurred. Delight contact the administrator."; } } else { foreach ($errors as $error) { echo $error . "These are the errors" . "\n"; } } } ?> A couple things to note:
- The primal used to access the file from the
$_FILESobject matches the proper name attribute used in the form -
$fileName = $<em>FILES['the</em>file']['name'];– This is the name of the actual file -
$fileSize = $<em>FILES['the</em>file']['size'];– This is the size of the file in bytes -
$fileTmpName = $<em>FILES['the</em>file']['tmp_name'];– This is the a temporary file that resides in thetmpdirectory of the server -
$fileExtension = strtolower(end(explode('.',$fileName)));– This gets the file extension from the file name -
$uploadPath = $currentDir . $uploadDirectory . basename($fileName);– This is where the files volition exist stored on the server. In the script above, it is set to the current working directory
Also notation that in the code higher up, we validate the file upload by checking both the file type and size. (Just png and jpeg files that are less than 4MB)
At present there are a couple final steps before we can offset uploading files:
- Go to your
uploads/directory and make it writable by running:chmod 0755 uploads/ - Make sure your
php.inifile is correctly configured to handle file uploads (Tip: to find your php.ini file, runphp --ini):
max_file_uploads = xx upload_max_filesize = 2M post_max_size = 8M Finally, if you now start the PHP server and go to localhost:1234, so upload a file, you should see it save in the uploads folder!
Keep in heed that the all of the lawmaking to a higher place requires additional security precautions before existence released in product. For example, there are currently no checks to meet if the user has uploaded a virus disguised every bit an epitome. To learn more than, check out this article which describes various ways to handle secure file uploads.
File Upload with Filestack
In this second example, we'll use Filestack to upload a file. Filestack is an advanced file upload API and service that securely stores files in the deject.
Why use a third party similar Filestack over edifice it yourself? By using a third party yous no longer need to deal with the scaling, security, and maintenance that comes with building your own file upload organisation. This tin gratuitous you up to focus on edifice other important parts of your application.
And you tin can get started for free. Filestack has a gratis plan that handles up to 100 monthly uploads with 1GB storage and 1GB bandwidth. If you demand to get beyond that corporeality, they offer pricing that scales with utilize.
So let'south get started:
ane. Sign up for a Filestack Account
First, we'll sign upwardly for a Filestack business relationship. Become to their registration folio and after you log in, get the API Key, which yous will use in the later steps.
2. Offset Uploading
At present that we have the Filestack library, let'southward integrate their JavaScript file uploader widget, which allows your users to connect to a variety of other sources from which to upload from. For example, if they wanted to upload from a URL or from social media. Simply supplant the contents of index.html with the following:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>PHP File Upload</title> </head> <body> <style> .picker-content{ height:300px; width:200px; } </mode> <script src="//static.filestackapi.com/filestack-js/two.x.x/filestack.min.js"></script> <script type="text/javascript"> document.addEventListener("DOMContentLoaded", role(event) { const customer = filestack.init(YOUR_API_KEY); let options = { "displayMode": "inline", "container": ".picker-content", "accept": [ "prototype/jpeg", "prototype/jpg", "paradigm/png" ], "fromSources": [ "local_file_system" ], "uploadInBackground": false, "onUploadDone": (res) => console.log(res), }; picker = client.picker(options); picker.open(); }); </script> <div course="picker-content"></div> </body> </html> Then, open up your page and then upload a file using the upload widget. After uploading, you should be able to log into your Filestack dashboard and see your newly uploaded file:
And that's it! You don't even need the server to handle the file, which is better for scalability, security, and maintenance.
Filestack PHP Library (optional)
The above example covers the simplest example of uploading a file with Filestack. Just, what if you wanted to access the file on your server to run some kind of post-processing, like checking if an image is safe for work? To do that, you can use the Filestack PHP library. We'll use Composer to install the Filestack PHP library. If you don't have Composer already, you tin install it by going to the binder yous created originally and running (encounter this for official documentation):
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" php -r "if (hash_file('sha384', 'composer-setup.php') === '48e3236262b34d30969dca3c37281b3b4bbe3221bda826ac6a9a62d6444cdb0dcd0615698a5cbe587c3f0fe57a54d8f5') { echo 'Installer verified'; } else { repeat 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" php composer-setup.php php -r "unlink('composer-setup.php');" After you do the higher up, you should be able to see Composer'south output by running php composer.phar.
And then run require --adopt-dist filestack/filestack-php to install the Filestack SDK.
Now that nosotros have the Filestack library, let'due south brand a new PHP script to check if a specific uploaded file is safe for work. Create a new file called fileUploadFilestack.php and add the post-obit (making sure to change the YOUR_API_KEY, YOUR_SECURITY_SECRET, and YOUR_FILE_HANDLE variables):
<?php require __DIR__ . '/vendor/autoload.php'; use Filestack\FilestackClient; $client = new FilestackClient(YOUR_API_KEY); $security = new FilestackSecurity(YOUR_SECURITY_SECRET); $file_handle = YOUR_FILE_HANDLE; # go tags with client $result_json = $client->getTags($file_handle); # become tags with filelink $filelink = new Filelink($file_handle, YOUR_API_KEY, $security); $json_result = $filelink->getTags(); # get safe for piece of work flag with filelink $json_result = $filelink->getSafeForWork(); ?> When this script is run, the result of the safe-for-work check volition be saved in the $json_result variable. And that'south just one instance. Using the Filestack PHP SDK allows yous to perform a variety of tasks on your uploaded files. Check out these other examples:
- Transform a file earlier upload
- Test if a file upload is "safe for work"
- Transcode uploaded video or audio
- Convert a file upload to pdf
- And more than…
In improver, if you want to come across more examples of how the file upload picker tin can be integrated into a form check out these links:
- Upload image
- Open picker
- Open picker in inline mode
- Crop images
- File preview
- And more…
Summary
Now that you know how implement PHP file uploads two means, yous tin can easily add together this feature to your website or application. If dealing with the scalability, security, and maintenance challenges of hosting your ain file upload infrastructure seems too daunting, let Filestack handle it. Too be certain to check out our article on AJAX File Uploads besides!
Read More than →
Source: https://blog.filestack.com/thoughts-and-knowledge/php-file-upload/
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