How to delete files in php

How to delete files in php: 1. Create a PHP sample file; 2. Create a deldir method; 3. Delete files in the directory through the unlink function, the syntax is "unlink($path)"; 4. You can delete the current folder through the rmdir function, the syntax is "rmdir($dir)".

#The operating environment of this article: Windows 7 system, PHP 8 version, Dell G3 computer.

PHP deletion of files and folders

Sometimes we need to use PHP to delete files and folders. PHP also has functions to achieve this. Here is a simple record Here is the code so that you can follow it 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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