PHP | Imagick coalesceImages() Function

The Imagick::coalscaleImages() function is an inbuilt function in PHP which is used to combined the set of images into single image. It composites a set of images with respect to any page offsets and disposal methods. The animation sequences GIF, MIFF, and MNG are typically start with an image background and each subsequent image varies in size and offset.

Syntax:

Imagick Imagick::coalesceImages( void )

Parameters: This function does not accepts any parameters.

Return Value: It returns an Imagick object on success.

Below program illustrates the Imagick::coalscaleImages() function in PHP:

Program: This program generates an animated gif image from a set of images.

<?php

$images = [
"https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-16.png",
"https://media.geeksforgeeks.org/wp-content/uploads/edgeImage.png"
];

// Loading up images in an array
$temp = new Imagick();

foreach ($images as $image) {
    $temp->readImage($image);
    $temp->setImageDelay(100);
}

// Reading each image with a delay
// of 100 millisecond time
$temp->setImageFormat('gif');
$gif = $temp->coalesceImages();

// Composing set of all images
$gif->setImageFormat('gif');

// Setting up output format to gif
$gif->setImageIterations(0);

// Infinite iterations of gif
header("Content-Type: image/gif");

// Display the image
echo $gif->getImagesBlob();

?>

Output:

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