# 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