PHP | imageaffine() Function
Last Updated :
28 Jan, 2020
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
$im = imagecreatefrompng(
$newimage = imageaffine( $im , [ -1.3, 0, 0, -0.7, 0, 0 ]);
header( 'Content-Type: image/png' );
imagepng( $newimage );
?>
|
Output:
Program 2:
<?php
$im = imagecreatefrompng(
$clipped = [
'x' => 0,
'y' => 0,
'width' => 200,
'height' => 200,
];
$newimage = imageaffine( $im , [-1, 0, 0, sin(4), 0, 0], $clipped );
header( 'Content-Type: image/png' );
imagepng( $newimage );
?>
|
Output:
Reference: https://www.php.net/manual/en/function.imageaffine.php
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