PHP实现遍历、复制、删除目录

一、遍历 opendir

　　具体函数我就不解释了，直接看代码理解：

<?php
 
header("Content-Type:Text/html;charset=utf8");
  $dir = 'd:/test/';             //将路径赋值给变量
  if(is_dir($dir)){             //判断该变量是不是一个目录
    if($dh = opendir($dir)){    //打开目录
        //读取文件，当文件不是空的时候，循环读出文件
       while(($file = readdir($dh))!==false){
            if($file == ''||$file == '..'||$file == '.'){
                continue;        //如果文件中有‘’和“..”就跳出
            }
            echo "file:{$file}"."<br>"; //输出文件名
            echo "filetype:".filetype($dir.$file)."<br>";
        }
    }
      closedir($dh);            //关闭目录
  }
?>

　　在我的D：/test/目录下的结果：

　　aaarticlea/png;base64,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" alt="" />

　　现在我们来写一个函数，遍历指定目录下所有文件，如果遇到目录，继续遍历目录下的文件。

<?php
 
header("Content-Type:Text/html;charset=utf8");
  $dir = 'd:/test/';             //将路径赋值给变量
function scanAll($dir){
  if(is_dir($dir)){              //判断该变量是不是一个目录
      echo "DIR:".$dir."<br>";
      $child = scandir($dir) ;   //列出指定路径中的文件和目录并赋值给$child
      foreach($child as $c){
          if($c !== '.' && $c !== '..'){    //不等于当前目录且不等于父目录
              scanAll($dir.'/'.$c); //遍历递归
          }
      }
  }
  if(is_file($dir)){
      echo 'File:'.$dir."<br>";
  }
}
 
scanAll($dir);
?>

---

2、复制目录 copy（$source,$dest）

<?php
//目录复制
header("Content-Type:Text/html;charset=utf8");
function copydir($sourceDir,$destDir){
 
    if(!is_dir($sourceDir)){
        return false;
    }
    if(!is_dir($destDir)){
        if(!mkdir($destDir)){
            return false;
        }
    }
    $dir = opendir($sourceDir);
    if(!$dir){
        return false;
    }
    while(false !== ($file=readdir($dir))){
        if($file != '.' && $file != '..'){
            if(is_dir($sourceDir.'/'.$file)){
                if(!copydir($sourceDir.'/'.$file,$destDir.'/'.$file)) {
                    return false;
                 }
                }else{
                    if(!copy($sourceDir.'/'.$file,$destDir.'/'.$file)){
 
                    }
 
            }
        }
    }
    closedir($dir);
    return true;
}

---

3、删除目录 --unlink($path)

<?php
//删除目录
header("Content-Type:Text/html;charset=utf8");
function deldir($dir){
    $dh = opendir($dir);
    while($file = readdir($dh)){
        if($file !='.' && $file != '..'){
            $fullpath = $dir.'/'.$file;
            if(!is_dir($fullpath)){
                unlink($fullpath);
            }else{
                deldir($fullpath);
            }
        }
    }
    closedir($dh);
 
    if(rmdir($dir)){
        return true;
    }
    return false;
}