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

This class can be used to resize images preserving the aspect ratio.It can open a JPEG, PNG or GIFimage and resize it in such way that neither the width nor the height exceed given size limits.The image is resized to preserve the original proportion between the width and height.The resized image is generated in the JPEG format overwriting the original image file.

Creating an image with PHP & GD library on the Fly , and add fonts to decorate it .Could be used as hit counter or just to show your database stats on main page .

Creating images on the fly can be a very useful skill. In this tutorial we will show you how to get quite interesting and useful effects using image handling functions. We will review two practical tasks: creating security images (captcha) on the fly and building a bar chart using numerical values retrieved from MySQL database.

Taking the smaller size between the width and height of an image, we crop that image to obtain a square which we save into a file. Online demo available.

This tutorial describes how to write text on to an existing PNG image using image functions in PHP by using a simple example. Each step is clearly described to make it easy to follow.

This tutorial shows how you can automate the process of adding watermarks on images from your site right when they are uploaded.

This tutorial focuses on a thumbnail generation script. Rather than generating a smaller representation of the image, it cuts out a section of the photograph to create an obscure snapshot of the photo itself. The thumbnail's size is variable also, so the script be used across different sites to create different sized thumbnails where needed.

This tutorial will demonstrate how to resize images with PHP. The ability to resize images is useful for creating thumbnails for image galleries.

The code sample demonstrates the use of GD library to apply round corners on an image on-the-fly. It allows you to apply round corners of arbitrary size and color on a GIF, JPEG or PNG image. The source image is read on-demand and sent directly to the browser. This script can potentially eliminate the need of a graphics editing program to apply round corners on tons of images plus revising the images (e.g. when the color scheme or layout of the website changes) is not required.

The article along with complete code sample demonstrates the use of PHP and GD library to watermark uploaded images on the fly. The method demonstrated here to watermark an uploaded image is to render a partially transparent line of text over the original image.

The article along with complete code sample demonstrates the use of GD library to generate thumbnails. The script first saves the uploaded image in a specific location, it then generates a thumbnail version of the image and finally saves the generated thumbnail image in JPEG format. The article also includes explanation of the calculations involved and a few other tips.

This PHP can be used for achieving watermarking task easily. I hope it will help you too.

This tutorial can give you an idea of how to center a text on an image using the GD Library. The script creates an image and centers a text on it.

This is a PHP Class useful if you need to resize images keeping their aspect ratio, using the GD Library. The new height is calculated proportionally to the new width’s size and reverse. For instance you have an image with the following dimensions: width – 1000, height – 800. Its thumbnail with a width of 250 will have the height of 200 (the ratio is kept).

This function can be used to resize images (with gif,png and jpg extensions) in PHP. Very easy to use in any PHP script.

Provided script could be used as "text rasterization service" to generate arbitrarily text-images for a web site. MD5-based authorization is used to avoid image generation by unauthorized users.

This tutorial will describe how to create thumbnail images on the fly using PHP. Furthermore you will learn how to process a whole folder of images and create their thumbnails. Since this requires the GD library, you will need an installation of PHP with at least GD 2.0.1 enabled.

This article provides two functions for converting HTML color (like #AAED43) to three RGB values ($r = 170, $g = 237, $b = 67) and converting RGB values to HTML color.

This tutorial will teach you the basics of auto generating your large image into condensed thumbnailed images using PHP. Complete code presented.

This is a comprehensive tutorial on how the graphics capabilities of PHP can be used to create simple bar charts in GIF and PNG format. Each example includes a graphical chart along with source code.