本文给大家介绍PHP与SQL语句常用大全，具体代码如下所述：

<?php $conn=mysql_connect("localhost","root","root"); mysql_select_db("db_database17",$conn); mysql_query("set names gb2312"); ?> <?php $sql1=mysql_query("select usernc,face,ip,email,qq from tb_user where id='".$info["userid"]."'",$conn); $info1=mysql_fetch_array($sql1); echo $info1["face"]; "savereg.php" <input type="text" name="usernc" <input type="text" name="userpwd" <input type="text" name="truename" <?php if(mysql_query("insert into tb_user(usernc,userpwd,truename,email,qq,tel,ip,address,face,regtime,sex,usertype) values('".$usernc."','".md5(trim($_POST["userpwd"]))."','".$_POST["truename"]."','".$_POST["email"]."','".$_POST["qq"]."','".$_POST["tel"]."','".$ip."','".$_POST["address"]."','".$_POST["face"]."','".date("Y-m-d H:i:s")."','".$_POST["sex"]."','0')",$conn)){ if($_SESSION["unc"]!=""){ session_unregister("unc"); } session_register("unc"); $_SESSION["unc"]=$usernc; echo "<script>alert('注册成功！');history.back();</script>"; }else{ echo "<script>alert('注册失败！');history.back();</script>"; } ?> <?php $sql=mysql_query("select count(*) as total from tb_leaveword ",$conn);//把查询的结果存入total中 $info=mysql_fetch_array($sql); $total=$info[total]; if($total==0){ echo "<div align=center>对不起，暂无留言！</div>"; }else{ if(!isset($_GET["page"]) || !is_numeric($_GET["page"])){ $page=1; }else{ $page=intval($_GET["page"]); } $pagesize=3; if($total%$pagesize==0){ $pagecount=intval($total/$pagesize); }else{ $pagecount=ceil($total/$pagesize); } $sql=mysql_query("select * from tb_leaveword order by createtime desc limit ".($page-1)*$pagesize.",$pagesize ",$conn); while($info=mysql_fetch_array($sql)){ ?> <table width="520" height="5" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td></td> </tr> </table> <table width="550" height="155" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#FCD424"> <tr> <td bgcolor="#FFFFFF" valign="top"><table width="550" height="24" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="450" background="images/dh_back_1.gif">主题：<?php echo unhtml($info["title"]);?></td> <td width="100" background="images/dh_back_1.gif"><div align="center"> <script language="javascript"> function openeditwindow(x){ window.open("editleaveword.php"newframe","top=100,left=200,width=450,height=280,menubar=no,location=no,scrollbars=no,status=no"); } </script> <?php $sqlu=mysql_query("select usernc from tb_user where id='".$info["userid"]."'",$conn); $infou=mysql_fetch_array($sqlu); if($infou["usernc"]==$_SESSION["unc"]){ ?> <a href="javascript:openeditwindow(<?php echo $info[id];"a1">编辑</a> <?php } ?> <?php if($_SESSION["unc"]!=""){ $sqld=mysql_query("select usertype from tb_user where usernc='".$_SESSION["unc"]."'",$conn); $infod=mysql_fetch_array($sqld); if($infod["usertype"]==1){ ?> <a href="javascript:if(window.confirm('确定删除该留言信息么？')==true){window.location.href='deleteleaveword.php?id=<?php echo $info[id];"a1">删除</a> <?php } } ?> </div></td> </tr> </table> <table width="550" height="5" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td></td> </tr> </table> <table width="550" height="120" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="150" height="90"><div align="center"><img src="<?php $sql1=mysql_query("select usernc,face,ip,email,qq from tb_user where id='".$info["userid"]."'",$conn); $info1=mysql_fetch_array($sql1); echo $info1["face"]; " /><br><?php echo $info1["usernc"];?></div></td> <td width="10" background="images/line_down.gif"></td> <td width="390" rowspan="2"><?php echo unhtml($info["content"]);?></td> </tr> <tr> <td height="30"><div align="center"><img src="images/email.gif" width="45" height="16" alt="<?php echo $info1[email];"/><img src="images/ip.gif" width="55" height="16" alt="<?php echo $info1[ip];"/><img src="images/qq.gif" width="45" height="16" alt="<?php echo $info1[qq];"/></div></td> <td width="10" background="images/line_down.gif"></td> </tr> </table> </td> </tr> </table> <?php } } ?> <table width="550" height="25" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="351"><div align="left">共有留言<?php echo $total;?>条每页显示<?php echo $pagesize;?>条第<?php echo $page;?>页/共<?php echo $pagecount;?>页</div></td> <td width="199"><div align="right"><a href="<?php echo $_SERVER["PHP_SELF"]">首页</a><a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php if($page>1) echo $page-1; else echo 1; ">上一页</a><a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php if($page<$pagecount) echo $page+1; else echo $pagecount; ?>

以上所述是小编给大家介绍的PHP与SQL语句常用大全，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的，在此也非常感谢大家对查字典教程网的支持！