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PHP | Gmagick blurimage() Function

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  • Last Updated : 28 Aug, 2019
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The Gmagick::blurimage() function is an inbuilt function in PHP which is used to add blur filter to the image.


Gmagick Gmagick::blurimage( $radius, $sigma, $channel )

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

  • $radius: This parameter is used to set blur radius in an image.
  • $sigma: It sets the standard deviation.
  • $channel: This parameter set the channel type constant. If it is not supplied then all channels are blurred.

Return Value: This function returns True on success.

Errors/Exceptions: This function throws GmagickException on error.

Below programs illustrates the Gmagick::blurimage() function in PHP:

Original Image:

Program 1:

// Create a Gmagick object 
$gmagick = new Gmagick(
// Use blurimage() function 
$gmagick->blurimage(7, 8);
header('Content-type: image/png'); 
// Ouput 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'); 
// Use blurimage() function 
$gmagick->blurimage(7, 5);
// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 



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