Home >Backend Development >PHP Tutorial >Understanding of PHP traversal of folders, file classes and processing classes

Understanding of PHP traversal of folders, file classes and processing classes

jacklove
jackloveOriginal
2018-06-11 11:09:092438browse

FindFile.class.php
Used to traverse directory files

<?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!=&#39;.&#39; && $file!=&#39;..&#39;){
                    $curfile = $spath.&#39;/&#39;.$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);
    }
}
?>

UnsetBom.class .php Used to clear the bom of utf8 bom files, that is, the first three bytes 0xEF 0xBB 0xBF, inherit the FindFile class

<?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){
        $file_ext = strtolower(array_pop(explode(&#39;.&#39;,basename($file))));
        if(in_array($file_ext, $this->filetype)){
            return true;
        }else{
            return false;
        }
    }
}
?>

Demo unset utf8 bom

<?php
require(&#39;FindFile.class.php&#39;);
require(&#39;UnsetBom.class.php&#39;);
$folder = dirname(__FILE__);
$obj = new UnsetBom(array(&#39;php&#39;,&#39;css&#39;,&#39;js&#39;)); // 文件类型
$obj->process($folder);
print_r($obj->files);
?>

This article is about the understanding of PHP traversal of folders, file classes and processing classes. For more related content, please pay attention to the PHP Chinese website.

Related recommendations:

Understand the difference between forward proxy and reverse proxy

##How to use Apache to build a virtual host

How to start and monitor the sh memcached process

The above is the detailed content of Understanding of PHP traversal of folders, file classes and processing classes. For more information, please follow other related articles on the PHP Chinese website!

Statement:
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