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The following code sample demonstrates the use of GD library to watermark images on the fly. The method demonstrated here to watermark an uploaded image is to overlay the original image with another image, preferably a transparent PNG image. Author: nine one one Code: PHP 5.0 |
PHP 4+ and GD 2.0+ represent a powerful combination when it comes to creating or altering images dynamically. In this tutorial, we'll look at some of the GD and standard PHP functions as we watermark images on the fly. Author: Brock Ferguson Code: PHP 4.0 |
If you're looking for a way to prevent brute-force attacks against your login pages, then look no further. In this article, I'll guide you through the basics of creating and integrating a security image. Author: Edward Eliot Code: PHP 4.0 |
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In this tutorial, we'll learn how to write a function that will take an image, reduce it's dimensions with the GD library, then (in this tutorial) store the image. You will need the GD2 library installed on your server in order to follow this guide. Author: Pilot-Doofy Code: PHP 4.0 |
First, you should be familiar with including files or retrieving files for execution on your server. Basic knowledge of the $_SERVER['DOCUMENT_ROOT'] element would definitely help, although it's far from required to understand and use this tutorial.
Author: Pilot-Doofy Code: PHP 4.0 |
PHP supports the GD Graphics Libarary which, created by Thomas Boutell, provides support for the creation, and even the management of .jpg and .png images. Unfortunately, due to licensing problems, the latest version does not support .gif images. Author: David Mytton Code: PHP 4.0 |
Another function of the GD Graphics Library is the ability to manipulate images that have already been created and are available on your site. Instead of the ImageCreate() and Image* functions, the ImageCreateFrom() function is used here.
Author: David Mytton Code: PHP 4.0 |
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This tutorial teaches you how to upload images into a mysql database using PHP. Even though it sounds complicated, it is fairly simple and has many practical applications. One example of an application would be Forum User Images. Author: Spoono Code: PHP 5.0 |
There are two basic ways to resize images for Internet display, and there are two basic reasons for wanting them resized. The first two things you need to remember when you're setting up your resize script. Author: Staff Writer Code: PHP 4.0 |
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