imagerotate
(PHP 4 >= 4.3.0, PHP 5)
imagerotate -- Rotate an image with a given angle
Beskrivelse
resource
imagerotate ( resource source_image, float angle, int bgd_color [, int ignore_transparent] )
Rotates the source_image
image using the given
angle
in degrees.
The center of rotation is the center of the image, and the rotated
image is scaled down so that the whole rotated image fits in the
destination image - the edges are not clipped.
Parameterliste
source_image
The source image link
angle
Rotation angle, in degrees.
bgd_color
Specifies the color of the uncovered zone after the rotation
ignore_transparent
If set and non-zero, transparent colors are ignored (otherwise kept).
Eksempler
Eksempel 1. Rotate an image 180 degrees
This example rotates an image 180 degrees - upside down.
<?php // File and rotation $filename = 'test.jpg'; $degrees = 180;
// Content type header('Content-type: image/jpeg');
// Load $source = imagecreatefromjpeg($filename);
// Rotate $rotate = imagerotate($source, $degrees, 0);
// Output imagejpeg($rotate); ?>
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Ovenstående eksempel vil udskrive
noget der ligner: 
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Notes
Bemærk: Denne funktion er kun tilgængelig hvis
PHP er kompileret med den medfølgende version af GD biblioteket.