Php/docs/function.imageaffinematrixconcat

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• GD and Image Functions
• Concatenate two affine transformation matrices

imageaffinematrixconcat

(PHP 5 >= 5.5.0, PHP 7)

imageaffinematrixconcat — Concatenate two affine transformation matrices

Description

imageaffinematrixconcat ( array $m1 , array $m2 ) : array|false

Returns the concatenation of two affine transformation matrices, what is useful if multiple transformations should be applied to the same image in one go.

Parameters

m1

An affine transformation matrix (an array with keys 0 to 5 and float values).

m2

An affine transformation matrix (an array with keys 0 to 5 and float values).

Return Values

An affine transformation matrix (an array with keys 0 to 5 and float values) or FALSE on failure.

Examples

Example #1 imageaffinematrixconcat() example

<?php$m1 = imageaffinematrixget(IMG_AFFINE_TRANSLATE, array('x' = 2, 'y' => 3));$m2 = imageaffinematrixget(IMG_AFFINE_SCALE, array('x' = 4, 'y' => 5));$matrix = imageaffinematrixconcat($m1, $m2);print_r($matrix);?>

The above example will output:

Array
(
    [0] => 4
    [1] => 0
    [2] => 0
    [3] => 5
    [4] => 8
    [5] => 15
)

See Also

• imageaffine() - Return an image containing the affine transformed src image, using an optional clipping area
• imageaffinematrixget() - Get an affine transformation matrix