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imagerotate
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imagerotate

(PHP 4 >= 4.3.0, PHP 5)

imagerotate -- Rotate an image with a given angle

Description

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.

Parameters

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).

Return Values

ChangeLog

VersionDescription
5.1.0 ignore_transparent was added.

Examples

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);
?>

The above example will output something similar to:

Notes

Note: This function is only available if PHP is compiled with the bundled version of the GD library.

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