imagerectangle imagesavealpha Image PHP Manual imagerotate (PHP 4 >= 4.3.0, 5) — Rotate an image with a given angle Beskrivelse resource ( $source_image , float $angle int $bgd

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).

Returneringsværdier

ChangeLog

Version	Beskrivelse
5.1.0	`ignore_transparent` was added.

Eksempler

Example#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);
?>

Ovenstående eksempel vil udskrive noget der ligner:

Notes

Note: Denne funktion er kun tilgængelig hvis PHP er kompileret med den medfølgende version af GD biblioteket.

imagerotate