imageaffinematrixget()

(PHP 5 >= 5.5.0, PHP 7)

Get an affine transformation matrix

说明

imageaffinematrixget(int $type[,mixed $options]): array

Returns an affine transformation matrix.

参数

$type

One of the IMG_AFFINE_* constants.

$options

If$typeis IMG_AFFINE_TRANSLATE or IMG_AFFINE_SCALE,$optionshas to be an array with keysxandy, both having float values.

If$typeis IMG_AFFINE_ROTATE,IMG_AFFINE_SHEAR_HORIZONTAL or IMG_AFFINE_SHEAR_VERTICAL,$optionshas to be a float specifying the angle.

返回值

An affine transformation matrix(an array with keys0to5and float values)或者在失败时返回FALSE.

范例

imageaffinematrixget() example

<?php
$matrix = imageaffinematrixget(IMG_AFFINE_TRANSLATE, array('x' = 2, 'y' => 3));
print_r($matrix);
?>

以上例程会输出：

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

参见

• imageaffine()返回经过仿射变换后的图像，剪切区域可选
• imageaffinematrixconcat()Concatenate two affine transformation matrices