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:

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<?php
  
// Create a new imagick object
$imagick = new Imagick(
  
// 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();
?>

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Output:

Program 2:

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<?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();
?>

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Output:

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




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