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GD Функции
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# imagerotate

(PHP 4 >= 4.3.0, PHP 5)

imagerotate — Rotate an image with a given angle

### Описание

resource imagerotate ( resource `$image` , float `$angle` , int `$bgd_color` [, int `$ignore_transparent`= 0 ] )

Rotates the `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.

### Список параметров

`image`

  An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

`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).

### Возвращаемые значения

### Список изменений

Версия | Описание
--- | ---
5.1.0 | `ignore_transparent` was added.

### Примеры

Пример #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);
?>`

Результатом выполнения данного примера будет что-то подобное:

### Примечания

> Замечание: Эта функция доступна только в том случае, если PHP был скомпилирован со встроенной библиотекой GD.

imagerectangle
imagesavealpha
GD Функции
PHP Manual