php man page for imagerotate

IMAGEROTATE(3)								 1							    IMAGEROTATE(3)

imagerotate - Rotate an image with a given angle

SYNOPSIS
       resource imagerotate (resource  $image, float  $angle, int  $bgd_color, [int  $ignore_transparent])

DESCRIPTION
	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
	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $angle
		- Rotation angle, in degrees. The rotation angle is interpreted as the number of degrees to rotate the image anticlockwise.

	      o $bgd_color
		- Specifies the color of the uncovered zone after the rotation

	      o $ignore_transparent
		- If set and non-zero, transparent colors are ignored (otherwise kept).

RETURN VALUES
	Returns an image resource for the rotated image, or FALSE on failure.

CHANGELOG
       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.5.0	|						    |
       |	|						    |
       |	|  This  function is now affected by the interpola- |
       |	| tion method set by  the  imagesetinterpolation(3) |
       |	| 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:[NOT DISPLAYABLE MEDIA]Output of example : Rotate an image 180 degrees

NOTES
       Note

	      This function is affected by the interpolation method set by imagesetinterpolation(3).

SEE ALSO
       imagesetinterpolation(3).

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