imagescale
(PHP 5 >= 5.5.0, PHP 7)
imagescale — Scale an image using the given new width and height
Opis
$image
, int $new_width
[, int $new_height = -1
[, int $mode = IMG_BILINEAR_FIXED
]] ) : resourceimagescale() scales an image using the given interpolation algorithm.
Informacja:
Unlike many of other image functions, imagescale() does not modify the passed
image; instead, a new image is returned.
Parametry
-
obraz -
Zasób obrazu, zwrócony przez jedną z funkcji tworzących obrazy, taką jak 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.
UwagaYou 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).Informacja:
IMG_WEIGHTED4is not yet supported.
Zwracane wartości
Return the scaled image resource on success lub FALSE w przypadku niepowodzenia.
Rejestr zmian
| Wersja | Opis |
|---|---|
| 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.
|
Zobacz też:
imagecopyresized() - Copy and resize part of an image imagecopyresampled() - Copy and resize part of an image with resampling
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