imagerotate
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
imagerotate — Rotate an image with a given angle
Description
$image
, float $angle
, int $bgd_color
[, int $ignore_transparent = 0
] ) : resource
Rotates the image image using the given
angle in degrees.
The center of rotation is the center of the image, and the rotated image may have different dimensions than the original image.
Parameters
-
image -
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
-
angle -
Rotation angle, in degrees. The rotation angle is interpreted as the number of degrees to rotate the image anticlockwise.
-
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).
Changelog
| Version | Description |
|---|---|
| 5.5.0 |
The ignore_transparent is now silently ignored.
|
| 5.5.0 | This function is now affected by the interpolation method set by the imagesetinterpolation() function. |
| 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);
// Free the memory
imagedestroy($source);
imagedestroy($rotate);
?>
The above example will output something similar to:
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-imagerotate.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
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