PHP code to get the size of a certain directory_PHP tutorial

The general idea of ​​the program is to use recursive rules to calculate how much space a directory occupies, and then write the value of the occupied space into a text file. Then as long as you access the txt file, you will know how much space is occupied, and there is no need to frequently obtain and read the disk, saving resources. . Every time a user uploads a file or deletes a file, the statistics will be recalculated. Of course, the statistical results can also be saved in the database.

Copy code The code is as follows:

function countDirSize($dir)
{
$handle = opendir($dir);
while (false!==($FolderOrFile = readdir( $handle)))
{
if($FolderOrFile != "." && $FolderOrFile != "..")
{
if(is_dir("$dir/$FolderOrFile") ) {
$sizeResult += getDirSize("$dir/$FolderOrFile");
} else {
$sizeResult += filesize("$dir/$FolderOrFile");
}
}
}
closedir($handle);
return $sizeResult;
}

Function that converts bytes into normal K and M functions :

Copy code The code is as follows:

function get_real_size($size) {

$kb = 1024 ; // Kilobyte
$mb = 1024 * $kb; // Megabyte
$gb = 1024 * $mb; // Gigabyte
$tb = 1024 * $gb; // Terabyte

if($size < $kb) {
return $size." B";
}else if($size < $mb) {
return round($size/$kb, 2)." KB";
}else if($size < $gb) {
return round($size/$mb,2)." MB";
}else if($size < $tb) {
return round($size/$gb,2)." GB";
}else {
return round($size/$tb,2)." TB";
}
}

Usage is very simple:

Copy code The code is as follows:

$size_zip=countDirSize("../zip/");
$size_zip=get_real_size($size_zip);

It’s that simple, haha.

Copy code The code is as follows:

/**
* File: fetch user directory use size
* Author: heiyeluren
* Create: 2005-9-19 16:20
* Modifed: 2005-9-19 16:41
*/

/*** Basic functions ***/

//Calculate directory size
function countDirSize(dir)
{
handle = opendir(dir);
while (false!==(FolderOrFile = readdir(handle)))
{
if(FolderOrFile != "." && FolderOrFile != "..")
{
if(is_dir(" dir/FolderOrFile")) {
sizeResult += getDirSize("dir/FolderOrFile");
} else {
sizeResult += filesize("dir/FolderOrFile");
}
}
}
closedir(handle);
return sizeResult;
}

//Save user file size
function saveDirSize(userDir)
{
userDirSize = countDirSize(userDir);
if (!fp = fopen(userDir."/dir_size.txt", "w+")) {
die("Open file failed");
} else {
fwrite(fp, dirSize);
}
}

//Get the size of the user directory
function getDirSize(userDir)
{
user = addslashes( userDir);
sizeFile = userDir."/dir_size.txt";
if (!fp = fopen(sizeFile, "r") {
return 0;
} else {
dirSize = fread(fp, filesize(sizeFile));
}
return dirSize;
}
/*** Call instance ***/
user = "heiyeluren";
userPath = "./user/".user;

//If the user performs the operation of deleting or uploading files, reacquire the directory size
if (action == "upload" || action == "delete ") {
saveDirSize(userPath);
}

userDirSize = getDirSize(userPath)/1024;
echo "User: ".user;
echo "Space occupied: " .userDirSize;
?>

http://www.bkjia.com/PHPjc/319396.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/319396.htmlTechArticleThe general idea of ​​the program is to use recursive rules to calculate how much space a directory occupies, and then write the space occupied value into text file, then as long as you access this txt file, you will know how much it occupies...