Snippets - GD

Crop an image - Anthony 14/6/2008

Method to crop an image.

<?php


// Crop dimensions.

$width = 100;

$height = 100;

// Set the path to the image to resize

$input_image = "House.jpg";

// Get the size of the original image into an array

$size = getimagesize( $input_image );

// Prepare canvas

$canvas = imagecreatetruecolor( $width, $height );

// Create a new image in the memory from the file 

$cropped = imagecreatefromjpeg( $input_image );

// Prepare image  crop - center the crop on the image

$newwidth = $size[0] / 2;

$newheight = $size[1] / 2;

$cropLeft = ( $newwidth/2 ) - ( $width/2 );

$cropHeight = ( $newheight/2 ) - ( $height/2 );

// Generate the cropped image

imagecopyresized( $canvas, $cropped, 0,0, $cropLeft, $cropHeight, $size[0], $size[1], $newwidth, $newheight );

// Save the cropped image as cropped.jpg

imagejpeg( $canvas, "cropped.jpg" );

// Clear the memory of the tempory images

imagedestroy( $canvas );

imagedestroy( $cropped );

?>

For more examples and information check out the main Imagemagick section.

Change a png to a jpg View

Create some text as an image View

Crop an image View

Display image without saving View

Grayscale image View

Resize an image View

Rotate an image View

Watermark an image View