doback.php

flashget43的源代码 一个比较常用的下载程序

<?php
			if($numb) {
				$lastid = $this->sendBack(new Message('back', null, $numb));

				$stmt = new Statement("SELECT count(*) AS numb FROM {$GLOBALS['fc_config']['db']['pref']}messages WHERE command='msg' AND toroomid=?");
				if(($rs = $stmt->process($this->roomid)) && ($rec = $rs->next())) $numb = min($numb, $rec['numb']);
			
				$numb--;

				$stmt = new Statement("SELECT id FROM {$GLOBALS['fc_config']['db']['pref']}messages WHERE command='msg' AND toroomid=? ORDER BY id DESC LIMIT $numb, 1");
				if(($rs = $stmt->process($this->roomid)) && ($rec = $rs->next())) {
					$firstid = $rec['id']; 
					$stmt = new Statement("SELECT * FROM {$GLOBALS['fc_config']['db']['pref']}messages WHERE command='msg' AND id>=? AND id<=? AND toroomid=? ORDER BY id");
					if($rs = $stmt->process($firstid, $lastid, $this->roomid)) {
						while($rec = $rs->next()) {
							$msg = new Message('msgb');
							$msg->created = $rec['created'];
							$msg->userid = $rec['userid'];
							$msg->roomid = $rec['roomid'];
							$msg->txt = $rec['txt'];
							$this->sendBack($msg);
						}					
					}
				}
			}
?>