Imagick::setSize

(PECL imagick 2, PECL imagick 3)

Imagick::setSize — Sets the size of the Imagick object

说明

public Imagick::setSize(int $columns, int $rows): bool

Sets the size of the Imagick object. Set it before you read a raw image format such as RGB, GRAY, or CMYK.

参数

columns
rows

返回值

成功时返回 true。

发现了问题？

了解如何改进此页面 • 提交拉取请求 • 报告一个错误

＋添加备注

用户贡献的备注 2 notes

down

Mike Pratt ¶

12 years ago

Using setSize before reading an image file tells ImageMagick to resize the image immediately on load - this can give a substantial increase in performance time and save memory and disk resources for large images:

<?php

$image = new Imagick();
$image->setSize(800,600);
$image->readImage($file);

?>

This might also save you having to call thumbnailImage to resize the image. 

On my server, this only made a difference with jpgs - pngs and gifs were loaded at full size which took much longer (30s or more compared to 6s for a similar sized jpg).

down

Ade ¶

7 years ago

This function is not working for me at all.
I am trying to generate Images from a PDF and this function does literally NOTHING, even it returns 'true'.....