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).
Imagick::setSize
(PECL imagick 2, PECL imagick 3)
Imagick::setSize — Imagick オブジェクトのサイズを設定する
説明
Imagick オブジェクトのサイズを設定します。 RGB や GRAY、CMYK といった生の画像フォーマットを読み込む前に設定します。
パラメータ
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columns -
-
rows -
戻り値
成功した場合に true を返します。
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User Contributed Notes 2 notes
Mike Pratt ¶
12 years ago
