Community Learn Tools Library Leisure
search
English
Home > Backend Development > PHP Tutorial > body text

php读取大文件示例分享(文件操作类)_PHP

WBOY
Release： 2016-06-01 11:54:43
Original
894 people have browsed it

Lib_File2.php
复制代码 代码如下:
 class Lib_File2
 {
  //文件目录
  private $root = '/data/wwwroot/kkpromo/data/';

  //文件后缀
  private $suffix = '.log';

  //文件句柄
  private $handle=null;

  //一次读取文件的最大记录数
  private $limit=40000;

  //每行读取的字节长度
  private $length=1024;

  //开始时间
  private  $startTime=0;

  //内存使用基准点
  private static $startMemory=0;

  //
  private $conn=null;

  //
  private static  $init=null;

  public static function instance()
  {
   self::$startMemory = memory_get_usage(true);

   if(self::$init && is_object(self::$init))
   {
    return self::$init;
   }

   self::$init = new self();

   return self::$init;
  }

  private function __construct(){}

  public  function setRoot($root)  
  {
   if(!is_dir($root)) die($root.' ROOT DOES NOT EXIST');
   $this->root = $root;
  }

  public function setSuffix($suffix)
  {
   $this->suffix = $suffix;
  }

  public function setLimit($limit)
  {
   if(!is_numeric($limit)) die($limit.' SHOULD BE NUMBERIC');
   if(intval($limit) > 1000000) die($limit.' SHOULD BE LOWER THAN 1000000');
   $this->limit = intval($limit);
  }

  public function _getFile($date , $appid , $op)
  {
   $filename = rtrim($this->root , '/').DIRECTORY_SEPARATOR.$date.DIRECTORY_SEPARATOR.$appid.'.'.$op.$this->suffix;
   if(!file_exists($filename))
   {
    die($filename.' FILE DOES NOT EXISTS!');
   }

   if(!is_file($filename))
   {
    die($filename.' FILE DOES NOT EXIST!');
   }

   if(!is_readable($filename))
   {
    die($filename.'  FILE ACCESS DENY!');
   }

   return $filename;
  }

  
  public function closeFile($date=null , $appid=null , $op=null)
  {
   if($op && $date && $appid)
   {
    if(is_object($this->handle[$date.'_'.$appid.'_'.$op]) || $this->conn[$date.'_'.$appid.'_'.$op])
    {
     unset($this->handle[$date.'_'.$appid.'_'.$op]);
     $this->handle[$date.'_'.$appid.'_'.$op]=null;
    }

    $this->conn[$date.'_'.$appid.'_'.$op]=null;
    $this->handle[$date.'_'.$appid.'_'.$op]=null;
    unset($this->handle[$date.'_'.$appid.'_'.$op]);
   }
   else {
    if(is_array($this->handle) && $this->handle)
    {
     foreach ($this->handle as $key=>$val){
      unset($this->handle[$key]);
      $this->conn[$key]=null;
      $this->handle[$key]=null;
     }
    }
   } 

   return true;
  }

  
  private function _openFile($date , $appid , $op)
  {   
   $this->startTime = microtime(true);
   if(isset($this->conn[$date.'_'.$appid.'_'.$op])  && $this->conn[$date.'_'.$appid.'_'.$op])
   {
    return $this->handle[$date.'_'.$appid.'_'.$op];
   }

   $filename = self::_getFile($date , $appid , $op);
   if(($this->handle[$date.'_'.$appid.'_'.$op] = new SplFileObject($filename , 'r'))!=null)
   {
    $this->conn[$date.'_'.$appid.'_'.$op] = true;
    return $this->handle[$date.'_'.$appid.'_'.$op];
   }
   else {
    die('FILE OPEN FAILED!');
   }
  }

  
  /**
   * 功能：解析数据
   * 格式：  array('timestamp','mid','data');
   * @param string $data
   * @return boolean|array
   */
  private  function _parseData($data , $jsonFlag=true)
  {
   if(empty($data) || !is_string($data)) return false;
   $result = array(
     'timestamp'=>0,
     'mid'=>0,
     'data'=>array(),
   );

   $data = explode('|', $data);
   if(count($data)    $result['timestamp'] = $data[0];
   $result['mid'] = $data[1];
   if($jsonFlag)
   {
    $result['data'] = @json_decode($data[2] , true);
    unset($result['mid']);
   }
   if(empty($result['timestamp']) || empty($result['mid'])) return false;

   unset($data);
   return $result;
  }

  
  /**
   * TODO:读取单一文件
   * @param string $date： 如（20140327）
   * @param int  $appid: 如（1000,9000）
   * @param string $op：如(show，login , index)
   * @param number $startNum 默认从第一行开始
   * @param number $length 默认到$this->limit 读取的行数
   * @param array $condition:array('mid'=>arrray() , 'ip'=>array() , ...)  过滤条件
   * @param bool $jsonFlag：默认为true， 则保留jsondata字段；设为false，则去掉false字段
   * @return array(count , diffTime , memory , data)
   */
  public  function readFile($date , $appid , $op , $startNum=0 , $length=0 , $jsonFlag=false ,  $condition=array())
  {
   $data['data'] = "";
   $data['count'] = 0;
   $index = $startNum;
   $startNum = empty($startNum) ? 0 : $startNum;
   $length = empty($length) ? $this->limit : $length;

   $handle = self::_openFile($date , $appid , $op );
   $line_number=0;

   if($handle)
   { 
    $handle->seek($startNum);
    $handle->setMaxLineLen($this->length);
    while (intval($line_number) - intval($startNum)     {
     $tmp = $handle->current();
     if(empty($tmp)) continue;     
     $tmp = self::_parseData($tmp , $jsonFlag);
     $line_number = $handle->key();
     !$jsonFlag && $condition= array();        
     if(isset($condition) && $condition)
     {
      $key = array_keys($condition);
      if(in_array($tmp['data'][$key[0]], $condition[$key[0]]))
      {
       $data['count']++;
       $data['data'][$line_number] = $tmp;
      }
     }
     else
     {
      $data['data'][$line_number] = $tmp;
      $data['count']++;
     }

     if(intval($line_number) - intval($startNum) >= intval($length)-1) break;
     unset($tmp);
     $handle->next();
    }
    unset($tmp , $length , $line_number , $condition);
   }

   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';

   return $data;
  }
  

  /**
   * TODO:命令行下获取文件总记录数*
   * @param string $date
   * @param int $appid
   * @param string $op
   * @return array
   */
  public  function total_lineFile($date, $appid, $op)
  {
   $this->_openFile($date, $appid, $op);
   $file = escapeshellarg($this->_getFile($date, $appid, $op)); // 对命令行参数进行安全转义
   $line = `wc -l  $file`;
   if(preg_match("/(\d{1,})/", $line , $ret)){
    $data['count']=$ret[1];
   }else{
    $data['count']=0;
   }
   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';
   return $data;
  }

  
  /**
   * TODO:统计{$data}.{$op}.log记录数
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param array $condition
   * @return array
   */
  public function countFile($date , $appid , $op ,$condition=array())
  {
   $data['count'] = 0;
   $handle = self::_openFile($date , $appid , $op );  
   if($handle)
   {
    $handle->setMaxLineLen($this->length);
    while (!$handle->eof())
    {
     $tmp = $handle->current();
     if(empty($tmp)) continue;
     $tmp = self::_parseData($tmp);
     if($condition && is_array($condition) )
     {      
      $key = array_keys($condition);
      if(isset($tmp['data'][$key[0]]) && $tmp['data'][$key[0]] && in_array($tmp['data'][$key[0]], $condition[$key[0]]))
      {
       $data['count']++;
      }
     }
     else
     {
      $data['count']++;      
     }

     unset($tmp);     
     $handle->next();
    }
   }
   unset($handle , $condition , $tmp , $key , $val);
   self::closeFile($date , $appid , $op );

   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';

   return $data;
  }  

  

  /**
   * TODO:统计用户数
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param bool $midflag ：默认为false 则 mid返回空数组；如设为true，则mid数组不为空
   * * @param bool $jsonFlag：默认为true， 则保留jsondata字段；设为false，则去掉jsondata字段
   * @param array $condition
   * @return : array：形如（{"mid":[],"count":2181,"diffTime":0.0397667884827,"memory":"3.75 M"}）
   */
  public function countFileMID($date , $appid , $op  ,  $midflag=false , $jsonFlag=false,  $condition=array())
  {
   //$count = self::total_lineFile($date , $appid , $op );
   $count = self::countFile($date , $appid , $op );
   $index = ceil($count['count'] / $this->limit);
   $result = array('mid'=>array() , 'count'=>0 , 'diffTime'=>0 , 'memory'=>0);

   for ($i=0 ; $i   {
    $startNum = $this->limit*$i;
    $endNum = $this->limit;
    $data = self::readFile($date , $appid , $op  ,  $startNum , $endNum , $jsonFlag);
    var_dump($data);exit();

    if($data['data'] && is_array($data['data']))
    {
     foreach ($data['data'] as $arr)
     {
      if($condition && is_array($condition))
      {
       $key = array_keys($condition);
       if(isset($arr['data'][$key[0]])  && (in_array($arr['data'][$key[0]] , $condition[$key]) || empty($condition[$key[0]])))
       {
        $result['mid'][$arr["mid"]] =1;
        $result['count']++;
       }
      }
      else
      {
        $result['mid'][$arr["mid"]] =1; 
        $result['count']++;
      }
      unset($data);
     }
    }
   }
   unset($index , $count , $condition , $data  , $arr);
   self::closeFile($date , $appid , $op);

   $result['mid'] = array_keys($result['mid']);  
   if(empty($midflag)) unset($result['mid']); 

   $result['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $result['memory'] = (memory_get_usage(true) - self::$startMemory)/1024/1024 . ' M';
   return $result;
  }

  
  /**
   * TODO:跨时间段 统计参加$op用户数据
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param number $day
   * @param bool  $midflag ：默认为false 则 mid返回空数组；如设为true，则mid数组不为空
   * @return array 形如（"20140326":{"mid":[],"count":4571,"diffTime":0.0806441307068,"memory":"3.75 M"},
  *          "20140325":{"mid":[],"count":2181,"diffTime":0.0397667884827,"memory":"3.75 M"}）
   */
  public function getReturnUser($date , $appid , $op , $day=1 , $midflag=false)
  {
   $date_i=0;
   for ($i =0; $i    $date_i = date('Ymd' , strtotime($date)-$i*86400);
    $result[$date_i] = self::countFileMID($date_i , $appid , $op , $midflag); 
   }
   unset($date , $date_i , $appid , $op  , $day);

   return $result;
  }
 }
?>

Lib_File1.php
复制代码 代码如下:
 class Lib_File1
 {
  //文件目录
  private $root = '/data/wwwroot/kkpromo/data/';

  //文件后缀
  private $suffix = '.log';

  //文件句柄
  private $hander=null;

  //一次读取文件的最大记录数
  private $limit=40000;

  //每行读取的字节长度
  private $length=1024;

  //开始时间
  private  $startTime=0;

  //内存使用基准点
  private static $startMemory=0;

  //
  private $conn=null;

  //
  private static  $init=null;

  public static function instance()
  {
   self::$startMemory = memory_get_usage(true);

   if(self::$init && is_object(self::$init))
   {
    return self::$init;
   }

   self::$init = new self();

   return self::$init;
  }

  private function __construct(){}

  public  function setRoot($root)  
  {
   if(!is_dir($root)) die($root.' ROOT DOES NOT EXIST');
   $this->root = $root;
  }

  public function setSuffix($suffix)
  {
   $this->suffix = $suffix;
  }

  public function setLimit($limit)
  {
   if(!is_numeric($limit)) die($limit.' SHOULD BE NUMBERIC');
   if(intval($limit) > 1000000) die($limit.' SHOULD BE LOWER THAN 1000000');
   $this->limit = intval($limit);
  }

  private function _getFile($date , $appid , $op)
  {
   $filename = rtrim($this->root , '/').DIRECTORY_SEPARATOR.$date.DIRECTORY_SEPARATOR.$appid.'.'.$op.$this->suffix;
   if(!file_exists($filename))
   {
    die($filename.' FILE DOES NOT EXISTS!');
   }

   if(!is_file($filename))
   {
    die($filename.' FILE DOES NOT EXIST!');
   }

   if(!is_readable($filename))
   {
    die($filename.'  FILE ACCESS DENY!');
   }

   return $filename;
  }

  
  public function closeFile($date=null , $appid=null , $op=null)
  {
   if($op && $date && $appid)
   {
    if(is_object($this->hander[$date.'_'.$appid.'_'.$op]) || $this->conn[$date.'_'.$appid.'_'.$op])
    {
     fclose($this->hander[$date.'_'.$appid.'_'.$op]);
    }

    $this->conn[$date.'_'.$appid.'_'.$op]=null;
    $this->hander[$date.'_'.$appid.'_'.$op]=null;
   }
   else {
    if(is_array($this->hander) && $this->hander)
    {
     foreach ($this->hander as $key=>$val){
      fclose($this->hander[$key]);
      $this->conn[$key]=null;
      $this->hander[$key]=null;
     }
    }
   } 

   return true;
  }

  
  private function _openFile($date , $appid , $op)
  {   
   $this->startTime = microtime(true);
   if(isset($this->conn[$date.'_'.$appid.'_'.$op])  && $this->conn[$date.'_'.$appid.'_'.$op])
   {
    return $this->hander[$date.'_'.$appid.'_'.$op];
   }

   $filename = self::_getFile($date , $appid , $op);
   if(($this->hander[$date.'_'.$appid.'_'.$op] = fopen($filename, 'r'))!=null)
   {
    $this->conn[$date.'_'.$appid.'_'.$op] = true;
    return $this->hander[$date.'_'.$appid.'_'.$op];
   }
   else {
    die('FILE OPEN FAILED!');
   }
  }

  
  /**
   * 功能：解析数据
   * 格式：  array('timestamp','mid','data');
   * @param string $data
   * @return boolean|array
   */
  private  function _parseData($data)
  {
   if(empty($data) || !is_string($data)) return false;
   $result = array(
     'timestamp'=>0,
     'mid'=>0,
     'data'=>array(),
   );

   $data = explode('|', $data);
   if(count($data)    $result['timestamp'] = $data[0];
   $result['mid'] = $data[1];
   $result['data'] = @json_decode($data[2] , true);
   if(empty($result['timestamp']) || empty($result['mid'])) return false;

   unset($data);
   return $result;
  }

  
  /**
   * TODO:读取单一文件
   * @param string $date： 如（20140327）
   * @param int  $appid: 如（1000,9000）
   * @param string $op：如(show，login , index)
   * @param number $startNum 默认从第一行开始
   * @param number $endNum 默认到$this->limit结束
   * @param array $condition:array('mid'=>arrray() , 'ip'=>array() , ...)  过滤条件
   * @param bool $jsonFlag：默认为true， 则保留jsondata字段；设为false，则去掉false字段
   * @return array(count , diffTime , memory , data)
   */
  public  function readFile($date , $appid , $op ,$startNum=0 , $endNum=0 , $jsonFlag=false ,  $condition=array())
  {
   $data['data'] = "";
   $data['count'] = 0;
   $index = $startNum;
   $startNum = empty($startNum) ? 0 : $startNum;
   $endNum = empty($endNum) ? $this->limit : $endNum;

   $hander = self::_openFile($date , $appid , $op );
   $tmpindex=0;

   if($hander)
   {
    //!feof($hander)
    while ($tmpindex     {
     $tmp = fgets($hander , $this->length);
     if(empty($tmp)) continue;
     if($tmpindex =$startNum)
     {
      $tmp = self::_parseData($tmp);    
      if(empty($tmp)) continue;
      //去掉jsondata
       if(!$jsonFlag) { unset($tmp[2]);  $condition= array();  }
      //条件过滤
      if($condition && is_array($condition) )
      {
       foreach ($condition as $key=>$val){
        if(in_array($tmp['data'][$key], $condition[$key]))
         unset($key , $val); 
         $data['count']++;
         $data['data'][$index] = $tmp;
         $index++;
        }
      }
      else{    
       $data['data'][$index] = $tmp;
       $index++;
       $data['count']++;
      }
     }
     if($tmpindex >= $endNum) break;
     $tmpindex++;
     unset($tmp);
    }
    fseek($hander ,  SEEK_END);
   }

   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';

   return $data;
  }
  

  /**
   * TODO:命令行下获取文件总记录数*
   * @param string $date
   * @param int $appid
   * @param string $op
   * @return array
   */
  public  function total_lineFile($date, $appid, $op)
  {
   $this->_openFile($date, $appid, $op);
   $file = escapeshellarg($this->_getFile($date, $appid, $op)); // 对命令行参数进行安全转义
   $line = `wc -l  $file`;
   if(preg_match("/(\d{1,})/", $line , $ret)){
    $data['count']=$ret[1];
   }else{
    $data['count']=0;
   }
   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';
   return $data;
  }

  
  /**
   * TODO:统计{$data}.{$op}.log记录数
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param array $condition
   * @return array
   */
  public function countFile($date , $appid , $op ,$condition=array())
  {
   $data['count'] = 0;
   $hander = self::_openFile($date , $appid , $op );  
   if($hander)
   {
    while (!feof($hander))
    {
     $tmp = fgets($hander , $this->length);
     $tmp = self::_parseData($tmp);
     if(empty($tmp)) continue;
     if($condition && is_array($condition) )
     {
      foreach ($condition as $key=>$val){
       if(isset($tmp['data'][$key]) && $tmp['data'][$key] && in_array($tmp['data'][$key], $condition[$key])){
        unset($key , $val); 
        $data['count']++;
       } 
      }
     }
     else
      $data['count']++;      
     unset($tmp);
    }
    fseek($hander , SEEK_END);
   }
   $data['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $data['memory'] = doubleval((doubleval(memory_get_usage(true)) -  doubleval(self::$startMemory))/1024/1024) . ' M';

   return $data;
  }  

  

  /**
   * TODO:统计用户数
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param bool $midflag ：默认为false 则 mid返回空数组；如设为true，则mid数组不为空
   * * @param bool $jsonFlag：默认为true， 则保留jsondata字段；设为false，则去掉jsondata字段
   * @param array $condition
   * @return : array：形如（{"mid":[],"count":2181,"diffTime":0.0397667884827,"memory":"3.75 M"}）
   */
  public function countFileMID($date , $appid , $op  ,  $midflag=false , $jsonFlag=false,  $condition=array())
  {
   $count = self::total_lineFile($date , $appid , $op );
   $index = ceil($count['count'] / $this->limit);
   $result = array('mid'=>array() , 'count'=>0 , 'diffTime'=>0 , 'memory'=>0);

   for ($i=0 ; $i   {
    $startNum = $this->limit*$i;
    $endNum = $this->limit*($i+1);
    $data = self::readFile($date , $appid , $op  ,  $startNum , $endNum , $jsonFlag);
    if($data['data'] && is_array($data['data']))
    {
     foreach ($data['data'] as $arr)
     {
      if($condition && is_array($condition)){
       foreach ($condition as $key=>$val){ 
        if(isset($arr['data'][$key])  && (in_array($arr['data'][$key] , $condition[$key]) || empty($condition[$key]))){
         if(!isset($result['mid'][$arr['mid']]))  { $result['mid'][$arr["mid"]] =1; $result['count']++; }
        }
       }
      }
      else {
       if(!isset($result['mid'][$arr['mid']]))  { $result['mid'][$arr["mid"]] =1; $result['count']++;   }
      }
     }
    }
    unset($data['data'] , $data);
   }
   unset($index , $count , $condition , $data  , $arr);
   self::closeFile($date , $appid , $op);

    $result['mid'] = array_keys($result['mid']);
    //$result['count'] = count($result['mid']);   
    if(empty($midflag)) unset($result['mid']); 

   $result['diffTime'] = doubleval(microtime(true)) - doubleval($this->startTime);
   $result['memory'] = (memory_get_usage(true) - self::$startMemory)/1024/1024 . ' M';
   return $result;
  }

  
  /**
   * TODO:跨时间段 统计参加$op用户数据
   * @param string $date
   * @param int $appid
   * @param string $op
   * @param number $day
   * @param bool  $midflag ：默认为false 则 mid返回空数组；如设为true，则mid数组不为空
   * @return array 形如（"20140326":{"mid":[],"count":4571,"diffTime":0.0806441307068,"memory":"3.75 M"},
  *          "20140325":{"mid":[],"count":2181,"diffTime":0.0397667884827,"memory":"3.75 M"}）
   */
  public function getReturnUser($date , $appid , $op , $day=1 , $midflag=false)
  {
   $date_i=0;
   for ($i =0; $i    $date_i = date('Ymd' , strtotime($date)-$i*86400);
    $result[$date_i] = self::countFileMID($date_i , $appid , $op , $midflag); 
   }
   unset($date , $date_i , $appid , $op  , $day);

   return $result;
  }
 }
?>

Related labels：
php读取大文件
source：php.cn
Previous article：PHP不用递归实现无限分级的例子分享_PHP Next article：PHP5.5在windows安装使用memcached服务端的方法_PHP
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
What are the best practices for displaying version information in web applications? I'm developing a web application. What are the best practices for displaying version infor...
From 2024-04-06 19:13:16
0
2
476
Challenges when using window.location.href to redirect to a new page I'm having trouble redirecting to a local domain php file, I've got it ready to redirect t...
From 2024-04-04 12:57:06
0
1
446
How to find JSON data based on other content in a JSON object when duplicates exist? I'm currently implementing some data charts on a website, and I have a JSON that contains ...
From 2024-04-04 10:57:45
0
1
413
PHP does not recognize content sent by Ajax I can't get PHP to read text sent via Ajax. index.html<head><!--CSSBootstrap-->...
From 2024-04-02 21:25:42
0
1
341
PHP AJAX not updating dynamically even though consolelog has correct value I'm trying to update $_POST['category'] by clicking a button. I'm trying to use AJAX (for ...
From 2024-04-02 17:50:59
0
1
396
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template