php+jquery+ajax无刷新评论 无刷新翻页，字数统计 绝对可以用

<?php header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); ?> <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", "show_main2.php", true); xmlReq.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlReq.send(formData); return false; } </script> <meta http-equiv="Pragma" content="no-cache"> <meta http-equiv="no-cache"> <meta http-equiv="Expires" content="-1"> <meta http-equiv="Cache-Control" content="no-cache"> <div id="content2"> <?php $pagesize=5; // # FileName="Connection_php_mysql.htm" # Type="MYSQL" # HTTP="true" require "conn.php"; mysql_query("set names utf8;"); //if ($lr) { //echo "非常好,MYSQL连接成功了!"; //} else { //echo "不好意思,失败了！"; //} mysql_select_db($database_lr, $lr); // mysql_select_db($database_lr, $lr); $rsbig=mysql_query("select * from news"); $myrowbig = mysql_fetch_array($rsbig); $classid_big=$myrowbig['id']; $bigclassname_big=$myrowbig['classname']; //echo $_POST['page']; mysql_select_db($database_lr, $lr); $result = mysql_query("Select count(DISTINCT id) FROM shoutbox"); $myrow = mysql_fetch_array($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 * from shoutbox GROUP BY `id` order by id desc limit $offset,$pagesize"); $num = @mysql_num_rows($result); while ($row = @mysql_fetch_array($result,MYSQL_NUM)) { $id[]=$row[0]; $content[]=$row[1]; $date[]=$row[2]; //$countpeople[] = $row[1]; } echo "<TABLE style=\"MARGIN-BOTTOM: 20px\" cellSpacing=0 cellPadding=3 width=100% border=0 align=center>\n"; echo "<TBODY>\n"; for($a=0;$a<$num;$a++) { echo "<TR>\n"; echo "<TD style=\"PADDING-TOP: 5px\" align=left><img src='images/date-bg.png' style='margin-bottom:-1px;'>&nbsp;".$content[$a]."</TD>"; echo "<Td align='right' width='180'>(".$date[$a].")</td>"; echo "</TR>"; echo "<tr><Td height='1px' bgcolor='#cccccc' colspan='2'></td></tr>"; } echo "</TR></TBODY></TABLE>\n"; echo "<TABLE style=\"MARGIN-TOP: 30px\" cellSpacing=0 cellPadding=0 width=\"100%\""; echo "border=0>"; echo "<TBODY><TR><TD colSpan=3 height=20>"; echo "<DIV align=center class='article'>"; echo "<P align=right><FONT color=red>".$page."/</FONT>".$pages." | Total:".$numrows."| "; if ($page==1) echo "<a>First</a> | "; if ($page>1) echo "<a onclick=\"viewpage(".$first.")\" href='#' class='article'>First</a> | "; if ($page==1) echo "<a>Prev</a> | "; if ($page>1) echo "<a onclick=\"viewpage(".$prev.")\" href='#' class='article'>Prev</a> | "; if ($page<$pages) echo "<a onclick=\"viewpage(".$next.")\" href='#' class='article'>Next</a> | "; if ($page==$pages) echo "<a>Next</a> | "; if ($page<$pages) echo "<a onclick=\"viewpage(".$last.")\" href='#' class='article'>Last</a>"; if ($page==$pages) echo "<a>Last</a> | "; echo "</P></DIV></TD></TR></TBODY></TABLE>"; ?></div>