PHP | imageaffine() Function

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The imageaffine() function is an inbuilt function in PHP which is used to get an image containing the affine transformed src image using an optional clipping area. Affine is a geometric transformation operation involving MATRICES.

Syntax:

resource imageaffine( resource $image, array $affine, array $clip )

Parameters: This function accept three parameters as mentioned above and described below:

$image: It specifies the image resource.
$affine: It specifies the array with keys 0 to 5.
$clip: It specifies the area to be clipped.

Return Value: This function returns affined image resource on success or FALSE on failure.

Exceptions: This function throws Exception on error.

Below given programs illustrate the imageaffine() function in PHP:

Program 1:

<?php 
  
// Create a image from url 
$im = imagecreatefrompng( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
// Affine the image 
$newimage = imageaffine($im, [ -1.3, 0, 0, -0.7, 0, 0 ]); 
  
// Output the image 
header('Content-Type: image/png'); 
imagepng($newimage); 
?> 

Output:

Program 2:

<?php 
  
// Create a image from url 
$im = imagecreatefrompng( 
'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
$clipped = [ 
    'x' => 0, 
    'y' => 0, 
    'width' => 200, 
    'height' => 200, 
]; 
  
// Affine the image 
$newimage = imageaffine($im, [-1, 0, 0, sin(4), 0, 0], $clipped); 
  
// Output the image 
header('Content-Type: image/png'); 
imagepng($newimage); 
?> 