Php/docs/function.imagerotate
imagerotate
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
imagerotate — Rotate an image with a given angle
Description
imagerotate
( resource $image
, float $angle
, int $bgd_color
[, int $dummy = 0
] ) : resource|false
Rotates the image image using the given
angle in degrees.
The center of rotation is the center of the image, and the rotated image may have different dimensions than the original image.
Parameters
image- An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
angle- Rotation angle, in degrees. The rotation angle is interpreted as the number of degrees to rotate the image anticlockwise.
bgd_color- Specifies the color of the uncovered zone after the rotation
dummy- This parameter is unused.
Return Values
Returns an image resource for the rotated image, or FALSE on failure.
Examples
Example #1 Rotate an image 180 degrees
This example rotates an image 180 degrees - upside down.
<?php// File and rotation$filename = 'test.jpg';$degrees = 180;// Content typeheader('Content-type: image/jpeg');// Load$source = imagecreatefromjpeg($filename);// Rotate$rotate = imagerotate($source, $degrees, 0);// Outputimagejpeg($rotate);// Free the memoryimagedestroy($source);imagedestroy($rotate);?>
The above example will output something similar to:
Notes
Note:
This function is affected by the interpolation method set by imagesetinterpolation().
