International PHP Conference Munich 2021

imagescale

(PHP 5 >= 5.5.0, PHP 7, PHP 8)

imagescaleScale an image using the given new width and height

Beschreibung

imagescale ( GdImage $image , int $width , int $height = -1 , int $mode = IMG_BILINEAR_FIXED ) : GdImage|false

imagescale() scales an image using the given interpolation algorithm.

Hinweis:

Unlike many of other image functions, imagescale() does not modify the passed image; instead, a new image is returned.

Parameter-Liste

image

Eine von den verschiedenen Erzeugungsfunktionen wie imagecreatetruecolor() gelieferte Grafikressource.

width

The width to scale the image to.

height

The height to scale the image to. If omitted or negative, the aspect ratio will be preserved.

mode

One of IMG_NEAREST_NEIGHBOUR, IMG_BILINEAR_FIXED, IMG_BICUBIC, IMG_BICUBIC_FIXED or anything else (will use two pass).

Hinweis: IMG_WEIGHTED4 is not yet supported.

R├╝ckgabewerte

Return the scaled image object on successIm Fehlerfall wird false zur├╝ckgegeben..

Changelog

Version Beschreibung
8.0.0 On success, this function returns a GDImage instance now; previously, a resource was returned.
8.0.0 image expects a GdImage instance now; previously, a resource was expected.

Siehe auch

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