PHP | Imagick setImageBackgroundColor() Function

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.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-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();
?>

Output:

Reference: https://www.php.net/manual/en/imagick.setimagebackgroundcolor.php