PHP implements function to count directory file size-PHP Tutorial-php.cn

PHP implements function to count directory file size

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Release： 2016-07-29 09:09:08

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I just arrived at the company in the morning, and my boss told me to hurry up and write a small function to count the file size in the specified directory. I went ahead and started it. Fortunately, I had a little basic knowledge and it was completed in a while, haha. The code is below.

<&#63; 
/** 
 统计目录文件大小的函数 
 @author xfcode 
*/ 
 function dirsize($dir) 
 { 
　　 @$dh = opendir($dir); 
 　　$size = 0; 
 　　while ($file = @readdir($dh)) 
　　{ 
 　　　if ($file != "." and $file != "..") 
　　　{ 
 　　　　$path = $dir."/".$file; 
 　　　　　if (is_dir($path)) 
　　　　　{ 
　　　　　　 $size += dirsize($path); 
 　　　　　} 
　　　　　elseif (is_file($path)) 
　　　　　{ 
 　　　　　　$size += filesize($path); 
 　　　　　} 
 　　　} 
 　　} 
 　@closedir($dh); 
 　return $size; 
 } 
//function　end 
 
//eg: 
 $dir_path = "./my_files"; 
 $dir_size = dirsize($dir_path); 
 $dir_size = $dir_size/1024/1024; 
 echo $dir_size."MB"; 
 &#63;>

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This function recursively iterates through all files in a directory and calculates the total file size in MB.

Let’s look at the code again

<&#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;
 }
?>

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The above introduces the function of counting directory file size in PHP, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.