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

Popis

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.

Parametre

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).

Vrátené hodnoty

ChangeLog

Verzia	Popis
5.1.0	`ignore_transparent` was added.

Príklady

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);
?>

Výstup horeuvedeného príkladu bude niečo podobné tomuto:

Poznámky

Note: Táto funkcia je dostupná len ak bolo PHP kompilované s pribalenou verziou GD knižnice.

imagerotate