PHP traverses folders, file classes and processing class usage examples, _PHP tutorial

PHP traverses folders and file classes and processing class usage examples,

The examples in this article describe the usage of PHP traversing folders and file classes and processing classes, which is of great practical value. Share it with everyone for your reference. The specific method is as follows:

The FindFile.class.php class file is used to traverse directory files. The specific code is as follows:

<&#63;php 
/** 遍历文件夹及文件类 
*  Date:  2013-03-21 
*  Author: fdipzone 
*  Ver:  1.0 
*/ 
class FindFile{ 
 
  public $files = array();  // 存储遍历的文件 
  protected $maxdepth;    // 搜寻深度,0表示没有限制 
 
  /* 遍历文件及文件夹 
  *  @param String $spath   文件夹路径 
  *  @param int  $maxdepth 搜寻深度,默认搜寻全部 
  */ 
  public function process($spath, $maxdepth=0){ 
    if(isset($maxdepth) && is_numeric($maxdepth) && $maxdepth>0){ 
      $this->maxdepth = $maxdepth; 
    }else{ 
      $this->maxdepth = 0; 
    } 
    $this->files = array(); 
    $this->traversing($spath); // 遍历 
  } 
 
  /* 遍历文件及文件夹 
  *  @param String $spath 文件夹路径 
  *  @param int  $depth 当前文件夹深度 
  */ 
  private function traversing($spath, $depth=1){ 
    if($handle = opendir($spath)){ 
      while(($file=readdir($handle))!==false){ 
        if($file!='.' && $file!='..'){ 
          $curfile = $spath.'/'.$file; 
 
          if(is_dir($curfile)){ // dir 
            if($this->maxdepth==0 || $depth<$this->maxdepth){ // 判断深度 
              $this->traversing($curfile, $depth+1); 
            } 
          }else{ // file 
            $this->handle($curfile); 
          } 
        } 
      } 
      closedir($handle); 
    } 
  } 
 
  /** 处理文件方法 
  * @param String $file 文件路径 
  */ 
  protected function handle($file){ 
    array_push($this->files, $file); 
  } 
} 
&#63;> 

UnsetBom.class.php is used to clear the BOM of utf8+bom files, that is, the first three bytes 0xEF 0xBB 0xBF. It inherits the FindFile class. The specific code is as follows:

<&#63;php 
/** 遍历所有文件，清除utf8+bom 0xEF 0xBB 0xBF 
*  Date:  2013-03-21 
*  Author: fdipzone 
*  Ver:  1.0 
*/ 
class UnsetBom extends FindFile{ 
 
  private $filetype = array(); // 需要处理的文件类型 
 
  // 初始化 
  public function __construct($filetype=array()){ 
    if($filetype){ 
      $this->filetype = $filetype; 
    } 
  } 
 
  /** 重写FindFile handle方法 
  *  @param String $file 文件路径 
  */ 
  protected function handle($file){ 
    if($this->check_ext($file) && $this->check_utf8bom($file)){ // utf8+bom 
      $this->clear_utf8bom($file);    // clear 
      array_push($this->files, $file);  // save log 
    } 
  } 
 
  /** 检查文件是否utf8+bom 
  *  @param String $file 文件路径 
  *  @return boolean 
  */ 
  private function check_utf8bom($file){ 
    $content = file_get_contents($file); 
    return ord(substr($content,0,1))===0xEF && ord(substr($content,1,1))===0xBB && ord(substr($content,2,1))===0xBF; 
  } 
 
  /** 清除utf8+bom 
  *  @param String $file 文件路径 
  */ 
  private function clear_utf8bom($file){ 
    $content = file_get_contents($file); 
    file_put_contents($file, substr($content,3), true); // 去掉头三个字节 
  } 
 
  /** 检查文件类型 
  *  @param String $file 文件路径 
  *  @return boolean 
  */ 
  private function check_ext($file){ 
    $file_ext = strtolower(array_pop(explode('.',basename($file)))); 
    if(in_array($file_ext, $this->filetype)){ 
      return true; 
    }else{ 
      return false; 
    } 
  } 
} 
&#63;> 

Remove utf8 BOM header Demo file traversal example:

<&#63;php 
require('FindFile.class.php'); 
require('UnsetBom.class.php'); 
 
$folder = dirname(__FILE__); 
 
$obj = new UnsetBom(array('php','css','js')); // 文件类型 
$obj->process($folder); 
 
print_r($obj->files); 
&#63;>

I hope this article will be helpful to everyone’s learning of PHP programming.

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