PHP method to count files in a directory and the size of directories in a directory, _PHP tutorial

How PHP counts the size of files in a directory and directories in a directory,

The example in this article describes how PHP counts the size of files in a directory and directories in a directory. Share it with everyone for your reference, the details are as follows:

<&#63;php
 //循环遍历目录中所有的文件，并统计目录和文件的大小
 $dirName="phpMyAdmin";
 $dir=opendir($dirName); //返回一个资源类型
 while($fileName=readdir($dir)){
 $file=$dirName."/".$fileName;
 if($fileName!="." && $fileName!=".."){
  if(is_dir($file)){
  echo "<font color='red'>".$fileName."===".date("Y-m-d H:i:s",filectime($file))."==".filetype($file)."==".toSize(dirSize($file))."</font><br/>";
  }
  else{
  echo "<font color='green'>".$fileName."=====".date("Y-m-d H:i:s",filectime($file))."====".filetype($file)."====".toSize(filesize($file))."</font><br/>";
  }
 }
 }
 closedir($dir);
 //把文件或目录的大小转化为容易读的方式
 function toSize($size){
 $dw; //指定文件或目录统计的单位方式
 if($size>pow(2,30)){
  $dw="GB";
  $size=round($size/pow(2,30),2);
 }
 else if($size>pow(2,20)){
  $dw="MB";
  $size=round($size/pow(2,20),2);
 }
 else if($size>pow(2,10)){
  $dw="KB";
  $size=round($size/pow(2,10),2);
 }
 else
 {
  $dw="bytes";
 }
 return $size.$dw;
 }
 //利用递归的方式统计目录的大小
 function dirSize($dirName){
 $dirsize=0;
 $dir=opendir($dirName);
 while($fileName=readdir($dir)){
  $file=$dirName."/".$fileName;
  if($fileName!="." && $fileName!=".."){ //一定要进行判断，否则会出现错误的
  if(is_dir($file)){
   $dirsize+=dirSize($file);
  }
  else{
   $dirsize+=filesize($file);
  }
  }
 }
 closedir($dir);
 return $dirsize;
 }
&#63;>

Readers who are interested in more content related to PHP file and directory operations can check out the special topics on this site: "Summary of PHP File Operations" and "Summary of PHP Directory Operation Skills"

I hope this article will be helpful to everyone in PHP programming.

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