PHP | Imagick hasPreviousImage() Function

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The Imagick::hasPreviousImage() function is an inbuilt function in PHP which is used to check whether the Imagick object is having a previous image or not. If Imagick object has multiple images it returns true else it returns false.
Syntax:

bool Imagick::hasPreviousImage( void )

Parameters: This function does not accepts any parameters.
Return Value: This function returns TRUE if the object has more images when traversing the list in the reverse direction, otherwise returns FALSE.
Below program illustrates the Imagick::hasPreviousImage() function in PHP:
Program: This program demonstrate the working of hasPreviousImage() function with multiple images and without multiple images.

php

<?php
 
// String array containing path of images
$imagePaths = [
"https://www.zambiatek.com/wp-content/uploads/gfg_200X200.png",
"https://media.zambiatek.com/wp-content/uploads/zambiatek-6.png"
];
 
// Create new Imagick object
$canvas = new Imagick();
 
$image = new Imagick(
'https://www.zambiatek.com/wp-content/uploads/gfg_200X200.png');
 
foreach ($imagePaths as $imagePath) {
     
    // Adding images in the canvas
    $canvas->readImage($imagePath);
}
 
// The pointer points to second image
if($canvas->hasPreviousImage()) {
    echo('$canvas has Multiple Images !!');
}
 
if($image->hasPreviousImage()) {
     
    // With a single image
    echo('$image has Multiple Images !!');
}
 
?>