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PHP | Gmagick rollimage() Function

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  • Last Updated : 23 Mar, 2021
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The Gmagick::rollimage() function is an inbuilt function in PHP which is used to roll an image.

Gmagick Gmagick::rollimage( $x, $y )

Parameters: This function accepts two parameters as mentioned above and described below: 

  • $x: This parameter stores the value of the X offset.
  • $y: This parameter stores the value of the Y offset.

Return Value: This function returns Gmagick object on success.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::rollimage() function in PHP:
Program 1: 
Input Image: 



// Create a Gmagick object
$gmagick = new Gmagick(
// Roll the image.
$gmagick->rollimage(400, 100);
header('Content-type: image/png');
// Output the image
echo $gmagick;


Program 2: 


// Create a GmagickDraw object
$draw = new GmagickDraw();
// Create GmagickPixel object
$strokeColor = new GmagickPixel('Red');
$fillColor = new GmagickPixel('Green');
// Set the color, opacity of image
// Set the width and height of image
// Function to draw circle 
$draw->circle(250, 250, 100, 150);
$gmagick = new Gmagick();
$gmagick->newImage(500, 500, 'White');
// Shear the image
$gmagick->rollimage(190, 190);
// Display the output image
header("Content-Type: image/png");
echo $gmagick->getImageBlob();



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