處理圖檔為自定義縮略圖（轉載）

<a>https://github.com/EagleWu/nginx-lua-imagemagick</a>

<a href="http://sihuo.com/cdn_assets/photo/201411/06/545ae4109ac1b891759542.jpg" target="_blank">http://sihuo.com/cdn_assets/photo/201411/06/545ae4109ac1b891759542.jpg</a>

<a>http://sihuo.com/cdn_assets/photo/201411/06/545ae4109ac1b891759542_320x320.jpg</a>

<a href="http://sihuo.com/cdn_assets/photo/201411/06/545ae4109ac1b891759542_640_640.jpg" target="_blank">http://sihuo.com/cdn_assets/photo/201411/06/545ae4109ac1b891759542_640_640.jpg</a>

set $image_root "/opt/wwwroot/";圖檔輸出目錄

set $convert_bin "/opt/app/ImageMagick/bin/convert"; 是imagek安裝路徑

輸出到 image_root 目錄裡面去 和原始檔案在一起

本文轉自 liang3391 51CTO部落格，原文連結:http://blog.51cto.com/liang3391/1575096