PHP | Gmagick setimagecolorspace() Function

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The Gmagick::setimagecolorspace() function is an inbuilt function in PHP which is used to set the image colorspace.

Syntax:

Gmagick Gmagick::setimagecolorspace( int $colorspace )

Parameters: This function accepts a single parameter $colorspace which holds an integer corresponding to one of COLORSPACE constants.

COLORSPACE constants:

Gmagick::COLORSPACE_UNDEFINED (0)
Gmagick::COLORSPACE_RGB (1)
Gmagick::COLORSPACE_GRAY (2)
Gmagick::COLORSPACE_TRANSPARENT (3)
Gmagick::COLORSPACE_OHTA (4)
Gmagick::COLORSPACE_LAB (5)
Gmagick::COLORSPACE_XYZ (6)
Gmagick::COLORSPACE_YCBCR (7)
Gmagick::COLORSPACE_YCC (8)
Gmagick::COLORSPACE_YIQ (9)
Gmagick::COLORSPACE_YPBPR (10)
Gmagick::COLORSPACE_YUV (11)
Gmagick::COLORSPACE_CMYK (12)
Gmagick::COLORSPACE_SRGB (13)
Gmagick::COLORSPACE_HSB (14)
Gmagick::COLORSPACE_HSL (15)
Gmagick::COLORSPACE_HWB (16)
Gmagick::COLORSPACE_REC601LUMA (17)
Gmagick::COLORSPACE_REC709LUMA (19)
Gmagick::COLORSPACE_LOG (21)
Gmagick::COLORSPACE_CMY (22)

Return Value: This function returns TRUE on success.

Exceptions: This function throws GmagickException on error.

Image used: To capture the canvas area.

Below given programs illustrate the Gmagick::setimagecolorspace() function in PHP:

Program 1: Making image Gray.

<?php 
  
// Create a new Gmagick object 
$gmagick = new Gmagick('zambiatek.png'); 
  
// Set the image colorspace to Gmagick::COLORSPACE_GRAY 
$gmagick->setimagecolorspace(Gmagick::COLORSPACE_GRAY); 
  
// Display the image 
header("Content-Type: image/png"); 
echo $gmagick; 
?> 

Output:

Program 2: SRGB Colorspace.

<?php 
  
// Create a new Gmagick object 
$gmagick = new Gmagick('zambiatek.png'); 
  
// Set the image colorspace to Gmagick::COLORSPACE_SRGB 
$gmagick->setimagecolorspace(Gmagick::COLORSPACE_SRGB); 
  
// Display the image 
header("Content-Type: image/png"); 
echo $gmagick; 
?> 

Output:

Reference: https://www.php.net/manual/en/gmagick.setimagecolorspace.php

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