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imageModifer is a PHP class that allows you to crop and resize images. The following formats are supported:

• PNG
• JPG
• GIF

This class requires PHP 5 and GD2 Library (GD2 with GIF support if you want to modify GIF images).

Download

imageModifier.class.php (9.5kb)

Docs: Functions

__construct

__construct ($imagePath, $memoryIncrease = false)

string $imagePath

This is the path to the image you wish to manipulate.

string $memoryIncrease

If you are trying to modify large images, this allows you to set the memory limit higher. Only set it as high as you know will work because if you set it too high it will revert to 8M which isn’t very much. For most hosts, try 30M. False will leave it at the default.

crop

crop ($output, $width, $height, $cx = 0, $cy = 0)

string $output

This is the location where you want to save the outputted image.

int $width

The width of the crop.

int $height

The height of the crop.

int $cx

The x location on the source image where you want to start the crop.

int $cy

The y location on the source image where you want to start the crop.

centerImageOnCanvas

centerImageOnCanvas ($output, $image, $canvas_w, $canvas_h, $bg, $opac)

string $output

This is the location where you want to save the outputted image.

string $image

Path to the source image. Use $this->path to use the image you initialized the class this.

int $canvas_w

The width of the canvas you wish to center the image on.

int $canvas_h

The height of the canvas you wish to center the image on.

array $bg

An array with 3 integers corresponding to the Red Green and Blue (RGB).

int $opac

1-127 scale of opaque to transparent background (used only on PNG images)

resize

resize ($output, $maxwidth, $maxheight, $quality=100)

string $output

This is the location where you want to save the outputted image.

int $maxwidth

The width you want to resize to.

int $maxheight

The height you want to resize to.

int $quality

1-100 scale of quality for JPEG images.