imagescale
(PHP 5 >= 5.5.0, PHP 7)
imagescale — Scale an image using the given new width and height
Опис
$image
, int $new_width
[, int $new_height = -1
[, int $mode = IMG_BILINEAR_FIXED
]] )imagescale() scales an image using the given interpolation algorithm.
Параметри
-
image -
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
-
new_width -
The width to scale the image to.
-
new_height -
The height to scale the image to. If omitted or negative, the aspect ratio will be preserved.
ЗастереженняYou should always provide the height if using PHP 5.5.18 or earlier, or PHP 5.6.2 or earlier, as the aspect ratio calculation was incorrect.
-
mode -
One of
IMG_NEAREST_NEIGHBOUR,IMG_BILINEAR_FIXED,IMG_BICUBIC,IMG_BICUBIC_FIXEDor anything else (will use two pass).
Значення, що повертаються
Return the scaled image resource on success або FALSE в разі помилки.
Журнал Змін
| Версія | Опис |
|---|---|
| 5.5.19/5.6.3 |
The calculation of the height if new_height was
negative or omitted was fixed; prior to these versions, the aspect
ratio was not maintained correctly.
|
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