PHP | Imagick setImageBackgroundColor() Function

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The Imagick::setImageBackgroundColor() function is an inbuilt function in PHP which is used to set the image background color.

Syntax:

bool Imagick::setImageBackgroundColor( mixed $background )

Parameters: This function accepts single parameter $background which holds the background color.

Return Value: This function returns TRUE on success.

Exceptions: This function throws ImagickException on error.

Below programs illustrate the Imagick::setImageBackgroundColor() function in PHP:

Program 1:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
// Set background color 
$imagick->setImageBackgroundColor('yellow'); 
  
// Set the ImageAlphaChannel to 9 which corresponds 
// to imagick::ALPHACHANNEL_TRANSPARENT 
$imagick->setImageAlphaChannel(9); 
  
// Display the image 
header("Content-Type: image/png"); 
echo $imagick->getImageBlob(); 
?> 

Output:

Program 2:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick(); 
  
// Write the caption in a image 
$imagick->newPseudoImage(800, 270, "caption:GeekforGeeks"); 
  
// Set background color 
$imagick->setImageBackgroundColor('grey'); 
  
// Set the ImageAlphaChannel to 9 which corresponds 
// to imagick::ALPHACHANNEL_TRANSPARENT 
$imagick->setImageAlphaChannel(9); 
  
// Display the image 
$imagick->setformat('png'); 
header("Content-Type: image/png"); 
  
echo $imagick->getImageBlob(); 
?> 