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PHP | Gmagick modulateimage() Function

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  • Last Updated : 18 Nov, 2019
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The Gmagick::modulateimage() function is an inbuilt function in PHP which is used to control the brightness, saturation, and hue of an image.


Gmagick Gmagick::modulateimage( $brightness, $saturation, $hue )

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

  • $brightness: This parameter is used to hold the value of brightness.
  • $saturation: This parameter is used to hold the value of saturation.
  • $hue: This parameter is used to hold the value of hue.

Return Value: This function returns Gmagick object on success.

Errors/Exceptions: This function throws GmagickException on error.

Below programs illustrates theĀ Gmagick::modulateimage() function in PHP:

Program 1:
Input Image:

// Create a Gmagick object 
$gmagick = new Gmagick(
// Use modulateimage function 
$gmagick->modulateimage(60, 100, 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'); 
// Use modulateimage function 
$gmagick->modulateimage(60, 100, 100);
// Display the output image 
header("Content-Type: image/png"); 
echo $gmagick->getImageBlob(); 



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