PHP folder operations

Files: Files + Directories

Determine the file type:

filetype ("path");    // returns a string Is_dir ("path");    // If the directory returns true to    determine whether the file is directory is_file("path");    // contrary to Dir to    determine whether the file is not a file

File properties:

Fileatime ("path");         // get file last access time Filectime ("path");         // Get file creation time Filemtime ("path");        // Get the file modification time filesize ("path");        // Get File Size file_exists ("path");        // To see if a file exists

/: (Root)

Root in Web page: representative www directory

Root in PHP: represents the disk directory

$_server [' Document_root '];    // gets the root www of the current server basename ("path");        // gets the file name in the path basename ("Path", "File type");    // gets the file name with the suffix removed dirname ("path");        // gets the part of the path that removes the file name PathInfo ("path");        // can get the file information returned is an array Realpath ("path");        // Convert A relative path to an absolute path (starting at the top-level directory)

Traverse Directory

Var_dump (glob// returns all files in the directory $attrglob("./touxiang/*"); foreach ($attras$v) {    echo$v. <br> ";}

Get the number of all files (including folders) under a folder
This method is used to get the number of files under the specified folder

$fname= "./0904";$dir=Opendir($fname);//open a directory to return to the directory resource while($url=Readdir($dir)){    Echo $fname." /".$url." <br> ";}Closedir($dir);//Close Directory Resourceget the size of all files in a directoryfunctionFsize ($fname){    $size= 0; $dir=Opendir($fname); //traverse directories, find files, accumulate size     while($u=Readdir($dir))    {        if($u=="." ||$u=="..")        {        }        Else        {            $zfname=$fname." /".$u; if(Is_file($zfname))            {                $size+=filesize($zfname); }        }    }        //find subdirectories, get the file size under subdirectories    Rewinddir($dir);  while($u=Readdir($dir))    {        if($u=="." ||$u=="..")        {        }        Else        {            $zfname=$fname." /".$u; if(Is_dir($zfname))            {                $size+ = Fsize ($zfname); }        }    }        Closedir($dir); return $size;}EchoFsize ("./0904");

PHP folder operations