imageflip
(PHP 5 >= 5.5.0, PHP 7, PHP 8)
imageflip — Flips an image using a given mode
參數
-
image
-
由圖像建立函式(例如imagecreatetruecolor())返回的 GdImage 對象。
-
mode
-
Flip mode, this can be one of the
IMG_FLIP_*
constants:Constant Meaning IMG_FLIP_HORIZONTAL
Flips the image horizontally. IMG_FLIP_VERTICAL
Flips the image vertically. IMG_FLIP_BOTH
Flips the image both horizontally and vertically.
返回值
成功時返回 true
, 或者在失敗時返回 false
。
更新日誌
版本 | 說明 |
---|---|
8.0.0 |
image expects a GdImage
instance now; previously, a resource was expected.
|
範例
示例 #1 Flips an image vertically
This example uses the IMG_FLIP_VERTICAL
constant.
<?php
// File
$filename = 'phplogo.png';
// Content type
header('Content-type: image/png');
// Load
$im = imagecreatefrompng($filename);
// Flip it vertically
imageflip($im, IMG_FLIP_VERTICAL);
// Output
imagejpeg($im);
imagedestroy($im);
?>
以上例程的輸出類似於:
示例 #2 Flips the image horizontally
This example uses the IMG_FLIP_HORIZONTAL
constant.
<?php
// File
$filename = 'phplogo.png';
// Content type
header('Content-type: image/png');
// Load
$im = imagecreatefrompng($filename);
// Flip it horizontally
imageflip($im, IMG_FLIP_HORIZONTAL);
// Output
imagejpeg($im);
imagedestroy($im);
?>
以上例程的輸出類似於: