imageaffinematrixget

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

imageaffinematrixget — Get an affine transformation matrix

说明

imageaffinematrixget(int $type, array|float $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

示例 #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

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