PHP | Imagick getSamplingFactors() Function

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The Imagick::getSamplingFactors() function is an inbuilt function in PHP which is used to get the horizontal and vertical sampling factor.

Syntax:

array Imagick::getSamplingFactors( void )

Parameters: This function doesn’t accepts any parameter.

Return Value: This function returns an associative array with the horizontal and vertical sampling factors of the image.

Exceptions: This function throws ImagickException on error.

Below given programs illustrate the Imagick::getSamplingFactors() function in PHP:

Program 1:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
$imagick->setSamplingFactors(array('2', '4', '5')); 
  
// Get the Sampling factors 
$samplingFactors = $imagick->getSamplingFactors(); 
print("<pre>".print_r($samplingFactors, true)."</pre>"); 
?> 

Output:

Array
(
    [0] => 2
    [1] => 4
    [2] => 5
)

Program 2:

<?php 
  
// Create a new imagick object 
$imagick = new Imagick( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
// Get the Sampling factors 
$samplingFactors = $imagick->getSamplingFactors(); 
print("<pre>".print_r($samplingFactors, true)."</pre>"); 
?> 

Output:

Array // Empty array value because sampling factors aren't set
(
)

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

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