How to delete a directory or file in php?

In PHP, you can use the unlink() function to delete files, the syntax is "unlink (specified file)", if it succeeds, it returns true, if it fails, it returns false; you can use the rmdir() function to delete an empty directory, the syntax is " rmdir (specified directory)", returns TRUE if successful, and FALSE if failed.

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Sometimes we need to use PHP to delete files and folders ( Directory), PHP originally has functions that can be implemented. Let’s simply record the code below so that it can be easily copied later. Let’s take a look at the code first

<?
function deldir($dir) {
  //先删除目录下的文件：
  $dh=opendir($dir);
  while ($file=readdir($dh)) {
    if($file!="." && $file!="..") {
      $fullpath=$dir."/".$file;
      if(!is_dir($fullpath)) {
          unlink($fullpath);
      } else {
          deldir($fullpath);
      }
    }
  }
 
  closedir($dh);
  //删除当前文件夹：
  if(rmdir($dir)) {
    return true;
  } else {
    return false;
  }
}
?>

unlink() function is used to delete files. Returns true if successful, false if failed. The rmdir() function is used to delete empty directories. It attempts to delete the directory specified by dir. The directory must be empty and must have appropriate permissions.

An example: delete all ".svn" folders under a certain folder (including their contents must also be deleted).

<?php
function delsvn($dir) {
  $dh=opendir($dir);
  //找出所有".svn" 的文件夹：
  while ($file=readdir($dh)) {
    if($file!="." && $file!="..") {
      $fullpath=$dir."/".$file;
      if(is_dir($fullpath)) {
            if($file==".svn"){
                delsvndir($fullpath);
            }else{
                delsvn($fullpath);
            }
      }
    }
  }
 
  closedir($dh);
}
function delsvndir($svndir){
    //先删除目录下的文件：
    $dh=opendir($svndir);
    while($file=readdir($dh)){
        if($file!="."&&$file!=".."){
            $fullpath=$svndir."/".$file;
            if(is_dir($fullpath)){
                delsvndir($fullpath);
            }else{
                unlink($fullpath);
            }
        }
        
    }
    closedir($dh);
    //删除目录文件夹
    if(rmdir($svndir)){
        return  true;
    }else{
        return false;
    }
    
}
$dir=dirname(__FILE__);
//echo $dir;
delsvn($dir);
?>

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