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  File upload in PHP

File is a special kind of form data, when being uploaded to the server through HTTP POST request, PHP will create a $_FILES global array, the relevant file information will be stored in this global array. We will illustrate file upload with some code snippets using PHP and look into the internal work mechanism. Lastly will talk about file upload security.File uploadIn order for users to upload files in client side, we have to provide a form on the user interface. Since the uploaded file is a special data, it is different from other POST data, so we have have to set a special encoding for the f...

4,470 1       PHP FILE UPLOAD


  How to Asynchronously Upload Files Using HTML5 and Ajax

In my previous posts, we discovered How to Use HTML5 File Drag & Drop, and Open Files Using HTML5 and JavaScript. Now we have a valid set of files, it possible to upload each one to the server. The process occurs asynchronously in the background so the user can complete other on-page tasks while it occurs.The HTMLLet’s examine our HTML form again:view plainprint?<form id="upload" action="upload.php" method="POST" enctype="multipart/form-data">  <fieldset>  <legend>HTML File Upload</legend>  ...

10,082 0       AJAX FILE UPLOAD HTML5 ASYNCHRONOUSLY X-FILENAME


  Ajax file upload tutorial

Step 1 - AJAX file uploadAJAX file upload tutorialFirst of all I have to say that to create a pure AJAX file upload system is not possible because of security limitations of JavaScript. All of the Ajax upload systems I know use some third party tool/package or only mimics the AJAX feeling. Even so it makes file upload process a bit nicer. In the next section I will present you a solution which imitates the AJAX process, but uses a normal upload process and iFrames.The concept: Create a simple HTML form for file uploadSet the target to an iFrame which is on the actual page but not visibleC...

6,670 0       PHP AJAX TUTORIAL FILE UPLOAD IFRAME