(PHP 5 >= 5.5.0, PHP 7)
imageflip — Flips an image using a given mode
$image
, int $mode
)
Flips the image
image using the given
mode
.
image
由图象创建函数(例如imagecreatetruecolor())返回的图象资源。
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. |
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Example #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);
?>
以上例程的输出类似于:
Example #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);
?>
以上例程的输出类似于:
Note: 此函数仅在与 GD 库捆绑编译的 PHP 版本中可用。