Most Popular Scripts | PHP | Tutorials & Tips | Image Manipulation

PHP has the ability to upload files such as documents or images using the multipart/form-data protocol, but how do you use this and how do you resize the images after they are uploaded to create thumbnails or image repository, etc. This tutorial along with full source code shows you how.

This article describes how you can rotate images in PHP. We deal with two examples, firstly rotating by 45 degrees and then by 90, going in to some depth to ensure you understand how the code is working. You might find this useful if you are, for example, building an online photo gallery and you want to rotate your pictures within PHP rather than having to rotate them on your computer. This is a powerful feature to have.

In this tutorial you will learn how to generate thumbnails from form uploaded images using GD php image library. The image ratio is maintained, so the thumbnail images will not be deformed. An image verification is performed before uploading and the image size is verified.

the goal of this tutorial is to give the reader an idea of how to construct a basic/dynamic image gallery from start to finish, not to imply that this is the only way, or even the best way to build a gallery; just a simple approach without all the bells and whistles. at the time of writing, this tutorial assumes a version of PHP >= 4.3 and GD 2.

Worried about bots? Then create CAPTCHA images to prevent bots from taking advantage of your site. You may be wondering what a CAPTCHA image is. Here's a brief synopsis from Wikipedia: A captcha (an acronym for "completely automated public Turing test to tell computers and humans apart") is a type of challenge-response test used in computing to determine whether or not the user is human. Captchas are used to prevent bots from using various types of computing services. Applications include preventing bots from taking part in online polls, registering for free email accounts (which may then be used to send spam), and, more recently, preventing bot-generated spam by requiring that the (unrecognized) sender pass a captcha test before the email message is delivered.

In this tutorial I will show you how to create a simple photo gallery. The script creates thumbnail images if needed and displays all images in the given directory.

In this tutorial I will show you how to resize an image with PHP. You can use this function in your own image gallery implementation or in any other cases when you need to create a thumbnail from your image. Using a this image resize script gives you the possibility to create various images which are different in their size.

This short tutorial will show you how to make a basic image gallery using PHP. The complete code presented.

This is the easiest tutorial on how to rotate images by random. Code included.

This setp-by-step article explains how to create a database-driven image uploading and display system in PHP. The example database used being MySQL, it also discusses possible modifications for MS SQL and Oracle. Some of the main topics include: Create database table with a field defined to hold binary data, Get your binary data into your table through a form-based file upload script, and Retrieve your binary data and display it to the user.

This tutorial will show you how to rotate an image in your PHP scripts. You'll need to have the GD library installed to be able to use some of the functions we use in this guide, though this is included with most PHP installations so there's a chance you'll have it.

A simple 2 file, 2-part tutorial about how to upload a picture of .gif or .jpg format and how to store that photo in a folder and also make a thumbnail of that picture.

This simple tutorial explains how to create images on the fly using PHP. It presents a simple code which you can use with a TTF font on your site.

In many scenarios you cannot escape uploading images when you develop a php script. This tutorial details how you can upload images using php and auto creates thumbnails on image upload.

This comprehensive tutorial guides you through step-by-step in the process of uploading, verifying and storing images with PHP. A database is required for storing information about the images. All code is provided.

This tutorial shows you how to create an interactive image maps using PHP and the GD library. It explains a method to zoom a portion of an image by using PHP and gif files.

A guide to creating a basic script for allowing users to upload images to your website.

Create dynamic images with the GD library. Tutorial shows you how to create a little man holding a sign that displays various messages (such a visitor's IP address and user-inputted text).

Built-in PHP library gd does not have ready-to-use function for photo(jpeg) thumbnail generation. Although there are many such examples on the net, they are usually not suitable for effective generating series of thumbnails (for ex. 240x240, 140x140, 80x80). This article provides php function thumbnail_generator and trivial image uploading script, which generates series of thumbnails.

Were going to be creating it in a function, so that we can re-use this wherever we need to. This particular function saves the thumbnail file to a directory on the server, you could actually skip saving the file and just print out the image itself if you would prefer to do that.