imageaffinematrixget
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
imageaffinematrixget — Get an affine transformation matrix
說明
imageaffinematrixget(int
$type, array|float $options): array|falseReturns an affine transformation matrix.
參數
-
type -
One of the
IMG_AFFINE_*constants. -
options -
If
typeisIMG_AFFINE_TRANSLATEorIMG_AFFINE_SCALE,optionshas to be an array with keysxandy, both having float values.If
typeisIMG_AFFINE_ROTATE,IMG_AFFINE_SHEAR_HORIZONTALorIMG_AFFINE_SHEAR_VERTICAL,optionshas to be a float specifying the angle.
返回值
An affine transformation matrix (an array with keys
0 to 5 and float values)
或者在失敗時返回 false.
範例
示例 #1 imageaffinematrixget() example
<?php
$matrix = imageaffinematrixget(IMG_AFFINE_TRANSLATE, array('x' => 2, 'y' => 3));
print_r($matrix);
?>
以上例程會輸出：
Array
(
[0] => 1
[1] => 0
[2] => 0
[3] => 1
[4] => 2
[5] => 3
)
參見
- imageaffine() - 返回經過仿射變換后的影象，剪下區域可選
- imageaffinematrixconcat() - Concatenate two affine transformation matrices