php实现统计目录文件大小的函数_php技巧
早上刚到公司,头告诉我,抓紧写一个小函数,用来统计指定目录中文件大小,我了个去,动手吧,还好有点小基础,一会就完工了,哈哈。代码在下面咯。
<? /** 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"; ?>
这个函数可以递归遍历目录中的所有文件,并计算以MB为单位的文件总大小。
下面我们再来看个代码
<?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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