discuz图片处理缩略图显示的方法介绍

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function thumblist($pid, $width = 0, $height = 0, $maximgcount = 3, $tid = 0){     global $_G;     if(!$pid) return array();     $width = intval($width);     $height = intval($height);     $maximgcount = intval($maximgcount);     $tid = intval($tid);     $maximgcount = $maximgcount <= 0 ? 3 : $maximgcount;     $maximgcount = min($maximgcount, 3);     $width = $width <= 0 ? 200 : $width;     $height = $height <= 0 ? 100 : $height;       if(!$tid) {         $tid = C::t('forum_post')->fetch_tid_by_pid($pid);     }       if(!$tid) return array();     $attachments = C::t('forum_attachment_n')->fetch_all_by_id('tid:'.$tid, 'pid', $pid, 'aid', true, false, false, $maximgcount);     $list = array();     $count = 0;     $nums = count($attachments);     if($nums ==1){         $width = 692;         $height =708;     } elseif ($nums == 2) {         $width = 660;         $height = 700;     } else if($nums ===3){         $width = 440;         $height = 532;     }     foreach($attachments as $aid=>$attachment) {         $bigimage = $_G['setting']['attachurl'].'forum/'.$attachment['attachment'];         $thumbfile = 'image/'.helper_attach::makethumbpath($attachment['aid'], $width, $height);         if(is_file($_G['setting']['attachdir'].$thumbfile)) {             $thumbfile = $_G['setting']['attachurl'].$thumbfile;         } else {             $thumbfile = '/'.getforumimg($attachment['aid'], 0, $width, $height,'fixwr');         }         if($attachment['width'] < $width) $thumbfile = $bigimage;         $list[] = array('thumb'=>$thumbfile, 'attachment'=>$bigimage, 'aid'=>$attachment['aid']);         $count++;         if($count >= $maximgcount) break;     }       return $list; }

discuz图片处理缩略图显示

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