Posted in PHP onMarch 27, 2008
自己总结了些屁经验
1.用ajax post数据到后台页面后,接着要重新连接数据库,别以为用之前的session连接过就可以了
2.为了处理返回乱码的问题,我添加了header("Content-Type:text/html;charset=GB2312");就可以正常显示了,后来在firefox下检验,却提示我下载这个网页,上网搜了不少资料,得到一个模糊的认识就是网页代码有语法错误,firefox为了安全起见不会直接显示而是提示下载,我重新检查了刚才那条语句,发现自己多写了个“\”,把它去掉后问题就解决了,哈哈,所以遇到这样的问题,好好检查一下html tag吧,毕竟firefox可不像ie那样smart
3.最后说一句,做web site的开发者,要负责任,别以为在ie下测试通过就万事大吉,毕竟不是所有人都用ie,还得要在别的浏览器下多做测试,这样才显示出你的专业水准
ajax脚本:
<script> function viewpage(p){ if(window.XMLHttpRequest){ var xmlReq = new XMLHttpRequest(); } else if(window.ActiveXObject) { var xmlReq = new ActiveXObject('Microsoft.XMLHTTP'); } var formData = "page="+p; xmlReq.onreadystatechange = function(){ if(xmlReq.readyState == 4){ document.getElementById('content2').innerHTML = xmlReq.responseText; } } xmlReq.open("post", "hotel_list.php", true); xmlReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlReq.send(formData); return false; } </script>
调用:
header("Content-Type:text/html;charset=GB2312"); $pagesize=10; //echo $_POST['page']; $result = mysql_query("Select count(DISTINCT hotelname) FROM ".TBL_HOTELS); $myrow = mysql_fetch_array($result); $numrows=$myrow[0]; $pages=intval($numrows/$pagesize); if ($numrows%$pagesize) $pages++; if (isset($_POST['page'])){ $page=intval($_POST['page']); } else{ //设置为第一页 $page=1; } $first=1; $prev=$page-1; $next=$page+1; $last=$pages; //计算记录偏移量 $offset=$pagesize*($page - 1); //读取指定记录数 $result=mysql_query("select `hotelname` , count( * ) from ".TBL_HOTELS." GROUP BY `hotelname` order by id desc limit $offset,$pagesize"); $num = mysql_num_rows($result); while ($row = mysql_fetch_array($result,MYSQL_NUM)) { $hotelname[] = $row[0]; $countpeople[] = $row[1]; } for($a=0;$a<$num;$a++) { //$result=mysql_query("select count(title) from " . TBL_Comments ." where `title`=\"".$title[$a]."\""); //$row = mysql_fetch_row($result); echo "<TABLE style=\"MARGIN-BOTTOM: 20px\" cellSpacing=0 cellPadding=0 width=100% border=0>\n"; echo "<TBODY>\n"; echo "<TR>\n"; echo "<TD style=\"PADDING-TOP: 5px\" vAlign=top align=left width=80>\n"; //rating_bar($title[$a],5); echo "</TD>\n"; echo "<TD style=\"PADDING-TOP: 5px\" align=left width=100%><A title=$hotelname[$a] style=\"FONT-SIZE: 14px\" href=#>$hotelname[$a]</A>\n"; echo "</TD></TR>\n"; echo " <TR>\n"; echo "<TD></TD>\n"; echo "<TD style=\"PADDING-LEFT: 0px\">\n"; echo "<IMG src=\"images/comment.gif\" border=0> 推荐人数:($countpeople[$a]) |\n"; echo "<SPAN>平均分:<STRONG></STRONG> (".$count."票) | 评论数:()</SPAN>\n"; echo "</TD></TR></TBODY></TABLE>\n"; } echo "<TABLE style=\"MARGIN-TOP: 30px\" cellSpacing=0 cellPadding=0 width=\"100%\""; echo "border=0>"; echo "<TBODY><TR><TD colSpan=3 height=20>"; echo "<DIV align=center>"; echo "<P align=left><FONT color=red>第".$page."页/总".$pages."页 | 总".$numrows."条</FONT> | "; if ($page>1) echo "<a onclick=\"viewpage(".$first.")\" href='#'>首页</a> | "; if ($page>1) echo "<a onclick=\"viewpage(".$prev.")\" href='#'>上页</a> | "; if ($page<$pages) echo "<a onclick=\"viewpage(".$next.")\" href='#'>下页</a> | "; if ($page<$pages) echo "<a onclick=\"viewpage(".$last.")\" href='#'>尾页</a>"; echo "转到第 <INPUT maxLength=3 size=3 value=1 name=goto_page> 页 <INPUT hideFocus onclick=\"viewpage(document.all.goto_page.value)\" type=button value=Go name=cmd_goto>"; echo "</P></DIV></TD></TR></TBODY></TABLE>";
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