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PHP | Imagick setLastIterator() Function

  • Last Updated : 11 Dec, 2019

The Imagick::setLastIterator() function is an inbuilt function in PHP which is used to set the Imagick iterator to the last image.

Syntax:

bool Imagick::setLastIterator( void )

Parameters: This function doesn’t accepts any parameter.

Return Value: This function returns TRUE on success.

Exceptions: This function throws ImagickException on error.



Below programs illustrate the Imagick::setLastIterator() function in PHP:

Program 1:




<?php
  
// Create a new imagick object
$imagick = new Imagick(
  
// Add a new image to same object, this
// will automatically move index to new
// image which is added.
$imagick->addImage(new Imagick(
  
// Move the cursor to first image
$imagick->setFirstIterator();
  
echo 'Index before setLastIterator() is '
          . $imagick->getIteratorIndex() . '<br>';
  
// Set the Imagick iterator to the last image
$imagick->setLastIterator();
  
echo 'Index after setLastIterator() is '
         . $imagick->getIteratorIndex() . '<br>';
?>

Output:

Index before setLastIterator() is 0
Index after setLastIterator() is 1

Program 2:




<?php
  
// Create a new imagick object
$imagick = new Imagick();
   
// Array of images
$images = [
];
   
// Read the images
$imagick->readImages($images);
  
// Move iterator to first image
$imagick->setFirstIterator();
  
echo 'Index before setLastIterator() is ' 
        . $imagick->getIteratorIndex() . '<br>';
  
// Set the Imagick iterator to the last image
$imagick->setLastIterator();
  
echo 'Index after setLastIterator() is ' 
        . $imagick->getIteratorIndex() . '<br>';
?>

Output:

Index before setLastIterator() is 0
Index after setLastIterator() is 4

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




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