php 根据url自动生成缩略图

[{"title":"（ 7 个子文件 840KB ） php 根据url自动生成缩略图","children":[{"title":"supload","children":[{"title":"createthumb.php <span style='color:#111;'> 1.23KB </span>","children":null,"spread":false},{"title":".htaccess <span style='color:#111;'> 438B </span>","children":null,"spread":false},{"title":"watermark.png <span style='color:#111;'> 3.83KB </span>","children":null,"spread":false}],"spread":true},{"title":"ThumbConfig.php <span style='color:#111;'> 606B </span>","children":null,"spread":false},{"title":"upload","children":[{"title":"article","children":[{"title":"2013","children":[{"title":"07","children":[{"title":"21","children":[{"title":"2.jpg <span style='color:#111;'> 388.42KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true},{"title":"news","children":[{"title":"2013","children":[{"title":"07","children":[{"title":"21","children":[{"title":"1.jpg <span style='color:#111;'> 452.74KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}],"spread":true}],"spread":true},{"title":"PicThumb.class.php <span style='color:#111;'> 21.25KB </span>","children":null,"spread":false}],"spread":true}]