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Isolate a color (php gd image)

Here is a class to isolate a primary color rendering of a photo black and white. The choice of using Object-oriented programming instead of a function gives the advantage to add filters or other image effects thereafter. Instantiation [code]$obj = new image_effect(); // Optional : ratio size of the working image. default : 2 ...

Dynamic image resizing according to location (javascript)

This javascript method resize image according to its location in the page. Images do not overflow the page or div that contains them. It works automatically, it is not necessary to modify the HTML content of the body. Implementation : • copy the javascript code in the header, between <head> and </head> • In the body...

Adjust the rate of image colors (php gd image)

This script adjusts the amount of colors in a jpg, gif or png picture. By modifying the value $variant between -25 and 15, you get a picture more or less colorful. Original picture

Automatically adjust brightness contrast of an image (php gd image)

This script adjusts the brightness and contrast of an image using PHP5 and the GD2 library. Set the variable $url_img with the path of your initial image. You can change the variable  which corresponds to the size of the working image of the script.

Dynamically resizing height of textarea (javascript)

This code dynamically resize a textarea according to its contents. It can work when the textarea gains focus and during typing.