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imagescale

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

imagescaleScale an image using the given new width and height

Descrição

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

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

Nota:

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

Parâmetros

image

Um objeto GdImage, retornado por uma das funções de criação de imagem, como imagecreatetruecolor().

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).

Nota: IMG_WEIGHTED4 is not yet supported.

Valor Retornado

Return the scaled image object on success ou false em caso de falha.

Registro de Alterações

Versão Descrição
8.0.0 On success, this function returns a GDImage instance now; previously, a resource was returned.
8.0.0 O parâmetro image agora espera uma instância de GdImage; anteriormente, um resource gd válido era esperado.

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Anonymous
1 year ago
Seemingly, you can't omit the width the same way you do with the height. If you write -1 for the width and specify a number for the height it will return false
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