php 提交数据并且保存符合php编码的文件实例

if( $_POST )
{

 $str = '23=12,34  78=1,3 45=12,46,78,89=33'; 

 $content=nl2br($str); 

 $content=str_replace(" ","",$content); 

 $arr=explode("<br/>",$content); 

 $result=array(); 

 foreach ($arr as $value) 

 { 

$k=explode("=",$value); 

 $result[]=array($k[0]=>$k[1]); 

 } 

 //数组转换成字串 

 function arrayeval($array, $level = 0) { 

  $space = ''; 

  for($i = 0; $i <= $level; $i++) { 

  $space .= " "; 

  } 

 $evaluate = "Array $space( "; 

  $comma = $space; 

  foreach($array as $key => $val) { 

   $key = is_string($key) ? '''.addcslashes($key, ''\').''' : $key; 

   $val = !is_array($val) && (!preg_match("/^-?d+$/", $val) || strlen($val) > 12 || substr($val, 0, 1)=='0') ? '''.addcslashes($val, ''\').''' : $val; 

   if(is_array($val)) { 

    $evaluate .= "$comma$key => ".arrayeval($val, $level + 1); 

  } else { 

    $evaluate .= "$comma$key => $val"; 

   } 

   $comma = ", $space"; 

  } 

 $evaluate .= " $space)"; 

  return $evaluate; 

 } 

//把结果写到文件 

 $config=arrayeval($result); 

 $strwrite="<?php ".'$'.'shuzu'.'='.$config." ?>"; 

 $fp=fopen('config.php','w'); 

 fwrite($fp,$strwrite); 

 fclose($fp); 
 }

 ?>

<form action="b.php?action=5" method="get"> 

<textarea name="content"></textarea> 

<input type="submit" value="submit" /> 

</form>

传值方法很多，
参数传值： 可以是urs.php?id=1带参数形式，这是页面之间比较主要的传值方式 ，用request,get 接收值.
from表单传值 : 主要接收request传值 post, get  来接收,from标签可以选择get或者post 通过url传值的是get 还可以利用ajax传值可以选择post或者get.

session传值 : 这个一般是做用户登陆时用的，服务器全局变量，一般不用在页面之前的传值
cookie传值 :把内容保存在客户端，

我们常用的页面传值主要是参数传值  from表单传值传值。

现在来做几个实例
*/
//先用页面参数传值实例

?>

<a href="b.php?action=1">点击我</a>
//输出值为 1

用form传值

<form action="b.php" method="get"> 

<input name="action" type="text" value="5">

<input type="submit" value="submit" /> 

</form>

得出值 5

<form action="b.php" method="POST"> 

<input name="action" type="text" value="5">

<input type="submit" value="submit" /> 

</form>

<?
if( $_GET )
{
 echo 'get传值',$_GET['action'];
}
else
{
 echo 'post传值', $_POST['action'];
}
//本文章原创于www.111cn.net 中国WEB第一站，，转载注明出处

缓存的工作原理其实并不复杂。它的核心思想是：首先，我们将需要显示的内容存储在一个文本文件（即缓存文件）之中。然后，如果有用户请求某个页面的内容，我们首先检查此页对应的缓存（即那个文本文件）是否存在——如果存在且为最新的缓存文件，那么直接将这个文本文件中的内容输出到客户端供用户查看；如果此页对应的缓存文件不存在或缓存生成的时间不符合要求（太旧），那么直接执行一次此页对应的PHP文件，并将显示内容存储在缓存文件中。重复上述流程。这样一来，虽然增加了PHP代码，但我们最大程度的节省了PHP链接到数据库教程再提取数据的时间。

*/

   //导入缓存类
   require_once('cache.class.php教程');
   //创建一个缓存类对象CacheManager
   $CacheManager = new Cache();
   //调用startCache方法，表示开始缓存
   $CacheManager->startCache();
   //以下区块所有echo内容都将作为缓存写入缓存文件中
   echo "Start Cache example at: ".date('H:i:s')."<br/>";
   sleep(2);
   echo "End Cache example at: ".date('H:i:s')."<br/>";
  
   echo "<br/><a href='clear.php'>Clean the cache</a><br/>";
   //以上区块所有echo内容都将作为缓存写入缓存文件中
   $CacheManager->endCache();

//cache.class.php代码

class Cache {
   var $status    = true;     // 值为True表示开启缓存；值False表示关闭缓存功能。
   var $cacheDir  = 'cache/'; //存放缓存文件的默认目录
   var $cacheFile = '';       //缓存文件的真实文件名
   var $timeOut   = 1000;     // 内容被重复使用的最长时限
   var $startTime = 0;        // 程序执行的开始时间
   var $caching     = true;     // 是否需要对内容进行缓存；值为False表示直接读取缓存文件内容
  
   function getMicroTime() {
           list($usec, $sec) = explode(" ",microtime());
          return ((float)$usec + (float)$sec);
    }

function startCache(){
      $this->startTime = $this->getMicroTime();
      ob_start();
      if ($this->status){
         $this->cacheFile = $this->cacheDir.urlencode( $_SERVER['REQUEST_URI'] );
         if ( (file_exists($this->cacheFile)) &&
              ((fileatime($this->cacheFile) + $this->timeOut) > time()) )
         {
            //从缓存文件中读取内容
            $handle = fopen($this->cacheFile , "r");
            $html   = fread($handle,filesize($this->cacheFile));
            fclose($handle);
         
            // 显示内容
            echo $html;

            // 显示程序执行时间          
           echo '<p>Total time: '
                 .round(($this->getMicroTime())-($this->startTime),4).'</p>';
           
            //退出程序
            exit();
          }
          else
          {
             //置缓存标志caching为true
             $this->caching = true;
          }
      }
    }

function endCache(){
      if ($this->status){
         if ( $this->caching )
         {
            //首先输出页面内容，然后将输出内容保存在缓存文件中
            $html = ob_get_clean();
            echo $html;
            $handle = fopen($this->cacheFile, 'w' );
            fwrite ($handle, $html );
            fclose ($handle);

            //显示页面执行时间           
            echo '<p>Total time: '.round(($this->getMicroTime()-$this->startTime),4).'</p>';
         }
      }      
    }

function cleanCache(){
       if ($handle = opendir($this->cacheDir)) {
          while (false !== ($file = readdir($handle))) {
             if (is_file($this->cacheDir.$file)) unlink($this->cacheDir.$file);
          }

          closedir($handle);      
       }
    }

}

// 再一个简单的php  缓存文件实例代码

if ($content = $cache-＞start($cache_id))
{
　echo $content;
　exit();
}

require_once 'Cache/Function.php';
 

　$cacheDir = './pear_cache/';
　$cache = new Cache_Function('file',array('cache_dir' =＞ $cacheDir));
　$arr = array('东方', '南方','西方');
　$cache-＞call('slowFunction', $arr);
　echo '＜BR＞';

　$arr = array('东方', '南方','西方');

 slowFunction($arr);

 　function slowFunction($arr = null)
　{
　　echo "一个执行起来很慢的函数 :( ＜br＞";
　　echo "当前时间是 " . date('M-d-Y H:i:s A', time()) . '＜br＞';
　　foreach ($arr as $fruit)
　　{
　　　echo "太阳此时正在 $fruit ＜br＞";
　　}
　)

述前说明:
CREATE VIEW 语句时，ANSI_NULLS 和 QUOTED_IDENTIFIER 选项必须设置为 ON。OBJECTPROPERTY 函数通过 ExecIsAnsiNullsOn 或 ExecIsQuotedIdentOn 属性为视图报告此信息

表a，字段a1,a2
表b，字段b1,b2
要弄个视图union all两个表

$sql ='CREATE VIEW dbo.VIEW2
  AS
  SELECT * FROM a
  UNION ALL
  (SELECT * FROM b )';
  

上面的是简单的创建视图并没有索引下面我们来看看关于创建索引视图

对指定表或指定表的视图创建关系索引。可在向表中填入数据前创建索引。可通过指定限定的数据库教程名称对另一个数据库中的表或视图创建关系索引。
语法:

CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name
    ON <object> ( column_name [ ASC | DESC ] [ ,...n ] )
    [ WITH <backward_compatible_index_option> [ ,...n ] ]
    [ ON { filegroup_name | "default" } ]

<object> ::=
{
    [ database_name. [ owner_name ] . | owner_name. ]
        table_or_view_name
}

<backward_compatible_index_option> ::=
{
    PAD_INDEX
  | FILLFACTOR = fillfactor
  | SORT_IN_TEMPDB
  | IGNORE_DUP_KEY
  | STATISTICS_NORECOMPUTE
  | DROP_EXISTING
}

//--创建视图  
  create   view   v  
  with   schemabinding  
  as  
  select   ID,name   from   dbo.A  
  go  
   
//  --创建索引  
  create   unique   clustered   index   v_index   on   v(ID)

php教程 发送邮箱实例代码

class pop3 {

        public $server="pop3.126.com";//服务器名
        public $server_port=110;//服务器端口
        public $timeout=30;//超过多少时间就算连接失败
        public $connection=0;//保持与主机的连接
        public $state="DISCONNECTED";//保存当前的状态  
        public $debug=0;//是否显示错误信息
        public $err_str="";//服务器返回的错误信息
        public $err_no;//服务器返回的错误号
        public $respones;//保存服务器返回的信息
        public $apop;//说明需要使用加密方式进行密码验证
        public $messages;//邮件数
        public $size;//邮件的总大小
        public $mail_list;//保存各个邮件的大小及在服务器上的序列号
        public $head=array();//邮件头的内容数组
        public $body=array();//邮件体的内容数组 

        function POP3($server,$server_port,$timeout)
        {
                $this->server=$server;
                $this->server_port=$server_port;
                $this->timeout=$timeout;
                $this->debug=TRUE;
        }

        function open()
        {
                if($this->server=="")
                {
                        $this->err_str="无效的主机名!";
                        return FALSE;
                }
                if($this->debug)  echo "正在打开  $this->server,$this->server_port,$this->timeout";
                if(!$this->connection=@fsockopen($this->server,$this->server_port,$err_no,$err_str,$this->timeout))
                {
                        $this->err_str="连接到POP服务器失败,错误信息:".$err_str."错误号:".$err_no;
                        return FALSE;
                }
                else
                {
                        $this->getresponse();
                        if($this->debug)
                            $this->outdebug($this->response);
                        if(substr($this->respones,0,3)!="+OK")
                        {
                                $this->err_str="服务器返回无效信息:".$this->respones."请检查pop服务器是否正确";
                                return FALSE;
                        }
                        $this->state="AUTHORIZATION";
                        return TRUE;
                }
        }

        function getresponse()
        {
                for($this->respones;;)
                {
                        if(feof($this->connection))
                            return FALSE;
                        $this->respones.=fgets($this->connection,100);
                        $length=strlen($this->respones);
                        if($length>=2&&substr($this->respones,$length-2,2)=="rn")
                        {
                                $this->respones=strtok($this->respones,"rn");
                                return TRUE;
                        }
                }
        }

        function outdebug($message)
        {
                echo htmlspecialchars($message)."n";
        }

        function command($command,$length,$code)
        {
                if($this->connection==0)
                {
                        $this->outdebug("没有连接到任何服务器，请检查网络连接！");
                        return FALSE;
                }
                if($this->debug)
                    $this->outdebug(">>> $command");
                if(!fput($this->connection,"$command rn"))
                {
                        $this->outdebug("'无法发送命令'.$command");
                        return FALSE;
                }
                else
                {
                        $this->getresponse();
                        if($this->debug)
                           $this->outdebug($this->respones);
                        if(substr($this->respones,0,$length)!=$code)
                        {
                                $this->outdebug("$command.'命令服务器返回信息无效'.$this->response");
                                return FALSE;
                        }
                        else
                            return TRUE;
                }
        }

        function login($user,$pass)
        {
                if($this->state!="AUTHORIZATION")
                {
                        $this->outdebug("没有连接到任何服务器或状态不对！");
                        return FALSE;
                }
                if(!$this->apop)
                {
                        if(!$this->command("USER $user",3,"+OK"))  return FALSE;
                        if(!$this->command("PASS $pass",3,"+OK"))  return FALSE;
                }
                else
                {
                        if(!$this->command(" APOP $user".md5($this->greeting.$pass),3,"+OK"))  return FALSE;
                }
                $this->state="TRANSACTION";
                return TRUE;
        }

        function stat_sum()
        {
                if($this->state!="TRANSACTION")
                {
                        $this->outdebug("还没有连接服务器或没有成功登陆");
                        return FALSE;
                }
                if(!$this->command("STAT",3,"+OK"))
                    return FALSE;
                else
                {
                        $this->respones=strtok($this->respones," ");
                        $this->messages=strtok(" ");
                        $this->size=strtok(" ");
                        return TRUE;
                }
        }

        function listmail($mess=null,$uni_id=null)
        {
                if($this->state!="TRANSACTION")
                {
                        $this->outdebug("还没有连接服务器或没有成功登陆");
                        return FALSE;
                }
                if($uni_id)
                   $command="UIDL";
                else
                   $command="LIST";
                if($mess)
                   $command.=$mess;
                if(!$this->command($command,3,"+OK"))
                   return FALSE;
                else
                {
                        $i=0;
                        $this->mail_list=array();
                        $this->getresponse();
                        while($this->respones!=".")
                        {
                                $i++;
                                if($this->debug)
                                   $this->outdebug($this->respones);
                                if(uni_id)
                                {
                                        $this->mail_list[$i][num]=strtok($this->respones," ");
                                        $this->mail_list[$i][size]=strtok(" ");
                                }
                                else
                                {
                                        $this->mail_list[$i][num]=intval(strtok($this->respones," "));
                                        $this->mail_list[$i][size]=intval(strtok(" "));
                                }
                                $this->getresponse();
                        }
                        return TRUE;
                }
        }

        function getmail($num,$line=-1)
        {
                if($this->state!="TRANSACTION")
                {
                        $this->outdebug("还没有连接服务器或没有成功登陆");
                        return FALSE;
                }
                if($line<0)
                   $command="RETR $num";
                else
                   $command="TOP $num $line";
                if(!$this->command($command,3,"+OK"))
                   return FALSE;
                else
                {
                        $this->getresponse();
                        $is_head=TRUE;
                        while($this->respones!=".")
                        {
                                if($this->debug)
                                   $this->outdebug($this->respones);
                                if(substr($this->respones,0,1)!=".")
                                {
                                        $this->respones=substr($this->respones,1,strlen($this->respones)-1);
                                }
                                if(trim($this->respones)=="")
                                    $is_head=FALSE;
                                if($is_head)
                                   $this->head[]=$this->respones;
                                else
                                   $this->body[]=$this->respones;
                                $this->getresponse();
                        }
                        return TRUE;
                }
        }

        function dele($num)
        {
                if($this->state!="TRANSACTION")
                {
                        $this->outdebug(",不能删除远程信件，还没有连接服务器或没有成功登陆");
                        return FALSE;
                }
                if(!num)
                {
                        $this->outdebug("删除的邮件参数不对");
                        return FALSE;
                }
                if($this->command("DELE $num",3,"+OK")) return TRUE;
                else return FALSE;
        }

        function close()
        {
                if($this->connection!=0)
                {
                        if($this->state=="TRANSACTION")
                           $this->command("QUIT",3,"+OK");
                        fclose($this->connection);
                        $this->connection==0;
                        $this->state="DISCONNECTED";
                }
        }
}

//发送邮件类调用方法

$host="pop3.126.com";
    $user="    ";
    $pass="     ";
    $rec=new pop3($host,110,20);
    if(!$rec->open()) die($rec->err_str);
       echo "open";
    if(!$rec->login($user,$pass)) die($rec->err_str);
       echo "login";
    if(!$rec->stat()) die($rec->err_str);
       echo "共有".$rec->messages."封信件，共".$rec->size."字节大小";
    if($rec->messages>0)
    {
            if(!$rec->listmail()) die($rec->err_str);
               echo "有以下信件:";
            for($i=1;$i<=count($rec->mail_list);$i++)
            {
                    echo "信件".$rec->mail_list[$i][num]."大小".$rec->mail[$i][size]."";
            }
            $rec->getmail(1);
            echo "邮件头的内容:";
            for($i=0;$ihead;$i++)
               echo htmlspecialchars($rec->head[$i])."n";
            for($i=0;$ibody;$i++)
               echo htmlspecialchars($rec->body[$i])."n";
    }
    $rec->close();