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PHP | Imagick hasPreviousImage() Function

  • Last Updated : 21 Oct, 2021

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 = [
];
 
// Create new Imagick object
$canvas = new Imagick();
 
$image = new Imagick(
 
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 !!');
}
 
?>

Output: 
 

$canvas has Multiple Images !!

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

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