Php/docs/function.imageaffinematrixget

• PHP Manual
• GD 和图像处理 函数
• Get an affine transformation matrix

imageaffinematrixget

(PHP 5 >= 5.5.0, PHP 7)

imageaffinematrixget — Get an affine transformation matrix

说明

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

Returns an affine transformation matrix.

参数

type

One of the IMG_AFFINE_* constants.

options

If type is IMG_AFFINE_TRANSLATE or IMG_AFFINE_SCALE, options has to be an array with keys x and y, both having float values.

If type is IMG_AFFINE_ROTATE, IMG_AFFINE_SHEAR_HORIZONTAL or IMG_AFFINE_SHEAR_VERTICAL, options has to be a float specifying the angle.

返回值

An affine transformation matrix (an array with keys 0 to 5 and float values) 或者在失败时返回 false.

范例

Example #1 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