PHP reading large file example sharing (file operation class)_PHP tutorial

Lib_File2.php

Copy code The code is as follows:

class Lib_File2
{
//File directory
private $root = '/data/wwwroot/kkpromo/data/';

//File suffix
private $suffix = '.log';

//File handle
private $handle=null;

//Maximum size of file read at one time Number of records
private $limit=40000;

//The length of bytes read in each line
private $length=1024;

//Start time
private $startTime=0;

//Memory usage benchmark
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 EXISTS!' );
}

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; >
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) < 3 || !is_array($data)) return false;
$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) < intval($length)-1)
{
$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 ; $i<$index ; $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: Statistics of participating $op user data across time periods
* @param string $date
* @param int $appid
* @param string $op
* @param number $ day
* @param bool $midflag: The default is false, then mid returns an empty array; if set to true, the mid array is not empty
* @return array is in the form of ("20140326":{"mid": [],"count":4571,"diffTime":0.0806441307068,"memory":"3.75 M"},
* "20140325":{"mid":[],"count":2181,"diffTime" :0.0397667884827,"memory":"3.75 M"})
*/
  public function getReturnUser($date , $appid , $op , $day=1 , $midflag=false)
  {
   $date_i=0;
   for ($i =0; $i<$day ; $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) < 3 || !is_array($data)) return false;
$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 < $endNum)
{
$tmp = fgets($hander , $this->length);
     if(empty($tmp)) continue;
     if($tmpindex < $endNum && $tmpindex >=$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 ; $i<$index ; $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: Statistics of participating $op user data across time periods
* @param string $date
* @param int $appid
* @param string $op
* @param number $ day
* @param bool $midflag: The default is false, then mid returns an empty array; if set to true, the mid array is not empty
* @return array is in the form of ("20140326":{"mid": [],"count":4571,"diffTime":0.0806441307068,"memory":"3.75 M"},
* "20140325":{"mid":[],"count":2181,"diffTime" :0.0397667884827,"memory":"3.75 M"})
*/
  public function getReturnUser($date , $appid , $op , $day=1 , $midflag=false)
  {
   $date_i=0;
   for ($i =0; $i<$day ; $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;
  }
 }
?>

http://www.bkjia.com/PHPjc/754035.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/754035.htmlTechArticleLib_File2.php 复制代码 代码如下: ?php class Lib_File2 { //文件目录 private $root = '/data/wwwroot/kkpromo/data/'; //文件后缀 private $suffix = '.log'; //文件句柄...