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PHP | Gmagick resizeimage() Function

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  • Last Updated : 23 Mar, 2021
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The Gmagick::resizeimage() function is an inbuilt function in PHP which is used to scale an image in given dimensions with a filter.

Gmagick Gmagick::resizeimage( $width, $height, $filter, $blur)

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

  • $width: This parameter is used to set the width of image.
  • $height: This parameter is used to set the height of image.
  • $filter: This parameter is used to set the value for filter.
  • $blur: This parameter is used to set the value for blur. The value larger than 1 results in blurry whereas lesser than 1 is sharp. 

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



// Create a Gmagick object
$gmagick = new Gmagick(
// Resize the image.
$gmagick->resizeimage(1024, 768, 10, 5, true);
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');
// Resize the image
$gmagick->resizeimage(890, 790, 6, 10);
// Display the output image
header("Content-Type: image/png");
echo $gmagick->getImageBlob();



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