Scale an image using the given new width and height


(PHP 5 >= 5.5.0)

imagescaleScale an image using the given new width and height

Описание

resource imagescale ( resource $image , int $new_width [, int $new_height = -1 [, int $mode = IMG_BILINEAR_FIXED ]] )

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

Список параметров

image

Ресурс изображения, полученный одной из функций создания изображений, например, такой как 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.

Предостережение

You 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_FIXED or anything else (will use two pass).

Возвращаемые значения

Return the scaled image resource on success или FALSE в случае возникновения ошибки.

Список изменений

Версия Описание
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.