update : 2015.11.03
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Resample image to desired resolution
Gmagick
PHP Manual

Gmagick::resampleimage

(PECL gmagick >= Unknown)

Gmagick::resampleimage — Resample image to desired resolution

설명

public void Gmagick::resampleimage ( float $xResolution , float $yResolution , int $filter , float $blur )

Resample image to desired resolution.

인수

xResolution

The new image x resolution.

yResolution

The new image y resolution.

filter

Image filter to use.

blur

The blur factor where larger than 1 is blurry, smaller than 1 is sharp.

반환값

The Gmagick object on success

오류/예외

Throws an GmagickException on error.

Gmagick
PHP Manual