PHP与SQL语句常用大全

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 $info1["face"];?>action="savereg.php"<input type="text" name="usernc"<input type="text" name="userpwd"<input type="text" name="truename" <?phpif(mysql_query("insert into tb_user(usernc,userpwd,truename,email,qq,tel,ip,address,face,regtime,sex,usertype) values('".$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?id="+x,"newframe","top=100,left=200,width=450,height=280,menubar=no,location=no,scrollbars=no,status=no");   }   </script>  <?php    $sqlu=mysql_query("select usernc from tb_user where id='".$info["userid"]."'",$conn);   $infou=mysql_fetch_array($sqlu);   if($infou["usernc"]==$_SESSION["unc"]){  ?>     <a href="javascript:openeditwindow(<?php echo $info[id];?>)" class="a1">编辑</a>  <?php   }  ?>      <?php   if($_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];?>';}" class="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"]?>?page=1" class="a1">首页</a> <a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php   if($page>1)    echo $page-1;  else   echo 1;    ?>" class="a1">上一页</a> <a href="<?php echo $_SERVER["PHP_SELF"]?>?page=<?php   if($page<$pagecount)    echo $page+1;  else   echo $pagecount;    ?>