PHP与SQL语句常用大全

<?php $conn=mysql_connect("localhost","root","root"); mysql_select_db("db_database17",$conn); mysql_query("set names gb2312"); ?> <?php $sql1=mysql_query("select usernc,face,ip,email,qq from tb_user where",$conn); $info1=mysql_fetch_array($sql1); echo $info1["face"]; ?> action="savereg.php" <input type="text" <input type="text" <input type="text" <?php if(mysql_query("insert into tb_user(usernc,userpwd,truename,email,qq,tel,ip,address,face,regtime,sex,usertype) values('".$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($sql)){ ?> <table cellpadding="0" cellspacing="0"> <tr> <td></td> </tr> </table> <table cellpadding="0" cellspacing="1" bgcolor="#FCD424"> <tr> <td bgcolor="#FFFFFF" valign="top"><table cellpadding="0" cellspacing="0"> <tr> <td background="images/dh_back_1.gif">&nbsp;主&nbsp;&nbsp;题:<?php echo unhtml($info["title"]);?></td> <td background="images/dh_back_1.gif"><div> <script language="javascript"> function openeditwindow(x){ window.open("editleaveword.php?id="+x,"newframe","top=100,left=200,width=450,height=280,menubar=no,location=no,scrollbars=no,status=no"); } </script> <?php $sqlu=mysql_query("select usernc from tb_user where",$conn); $infou=mysql_fetch_array($sqlu); if($infou["usernc"]==$_SESSION["unc"]){ ?> <a href="javascript:openeditwindow(<?php echo $info[id];?>)">编辑</a> <?php } ?> &nbsp; <?php if($_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];?>';}">删除</a> <?php } } ?> </div></td> </tr> </table> <table cellpadding="0" cellspacing="0"> <tr> <td></td> </tr> </table> <table cellpadding="0" cellspacing="0"> <tr> <td><div><img src="<?php $sql1=mysql_query("select usernc,face,ip,email,qq from tb_user where",$conn); $info1=mysql_fetch_array($sql1); echo $info1["face"]; ?>" /><br><?php echo $info1["usernc"];?></div></td> <td background="images/line_down.gif"></td> <td rowspan="2"><?php echo unhtml($info["content"]);?></td> </tr> <tr> <td><div><img src="https://www.jb51.net/images/email.gif" alt="<?php echo $info1[email];?>"/><img src="https://www.jb51.net/images/ip.gif" alt="<?php echo $info1[ip];?>"/><img src="https://www.jb51.net/images/qq.gif" alt="<?php echo $info1[qq];?>"/></div></td> <td background="images/line_down.gif"></td> </tr> </table> </td> </tr> </table> <?php } } ?> <table cellpadding="0" cellspacing="0"> <tr> <td><div>共有留言&nbsp;<?php echo $total;?>&nbsp;条&nbsp;每页显示&nbsp;<?php echo $pagesize;?>&nbsp;条&nbsp;第&nbsp;<?php echo $page;?>&nbsp;页/共&nbsp;<?php echo $pagecount;?>&nbsp;页</div></td> <td><div><a href="<?php echo $_SERVER["PHP_SELF"]?>?page=1">首页</a>&nbsp;<a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php if($page>1) echo $page-1; else echo 1; ?>">上一页</a>&nbsp;<a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php if($page<$pagecount) echo $page+1; else echo $pagecount; ?>

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