PHP Directory Operations

BaseName () Returns the file name portion of the path $path = "d:/lamp/apache2/htdocs/file.php"; Echo basename ($path). " "; Display filenames with file name extensions Echo basename ($path, ' php '). "; Show filenames without file name extensions DirName () Remove file name, return directory name echo dirname ($path). " "; Return directory Name PathInfo () Returns an array of path properties Print_r (PathInfo ($path)). " "; Opendir () Open the specified directory Readdir () Reads the specified directory Closedir () Close the specified directory Rewinddir () Rewind directory Handle /* * The following code to count the files in a directory */ $num = 0; Used to count the total number of subdirectories and files $dirname = "PM3"; Define a directory, that is, the directory to traverse $dir _handle=opendir ($dirname); Open Directory Output traversed content and file names using tabular format echo " echo " echo " echo " while ($file =readdir ($dir _handle)) { echo " Output file name Output File Size Output File type Modified time of output file } Loop through the contents of the directory and know the last $dirFile = $dirname. " /". $file; Use the directory name and file name to link up so that you can use it in the filetype below if ($num ++%2==0) { Interlaced color by single complex $bgcolor = "#ffffff"; }else{ $bgcolor = "#cccccc"; } echo " echo " echo " echo " echo " echo " "; "; "; "; "; "; "; "; "; "; Catalog ". $dirname." Under the content file name File Size File Type Modification Time ". $file." ". FileSize ($dirFile)." ". FileType ($dirFile)." ". Filemtime ($dirFile)." "; Closedir ($dir _handle); echo " in Directory". $dirname. " ". $num." A file "; Disk_free_space () Disk_total_space () Statistics disk size /* * Customize a recursive function to count the size of incoming directory files */ function Dirsize ($directory) { $dir _size=0; Defines a variable that can be used to accumulate the size of each file to calculate the size of the directory if ($dir _handle=opendir ($directory)) { Open Directory while ($fileName =readdir ($dir _handle)) { Looping through files in a directory if ($fileName! = "." && $fileName! = "...") { Be sure to rule out two special directories. $subFile = $directory. " /". $fileName; Connect the file name and directory name if (Is_dir ($subFile)) { Determine if a sub-file is a directory $dir _size+=dirsize ($subFile); If it is a directory, continue to loop down } if (Is_file ($subFile)) { Determine if it is an ordinary file $dir _size+=filesize ($subFile); Gets the size of the file and adds up to the previous file size } } } } Closedir ($dir _handle); Closing a handle to a directory return $dir _size; } $dir _size=dirsize ("PM3"); The size of the echo "directory PM3 is:". Round ($dir _size/pow (1024,2), 2). " MB "; The size of the output directory /* * Customize a recursive function to delete a directory */ Unlink () Delete the files in the directory function Deldir ($directory) { if (file_exists ($directory)) { Determine if a directory exists if ($dir _handle=opendir ($directory)) { Open Directory while ($fileName =readdir ($dir _handle)) { Iterate through the files in the directory if ($fileName! = "." && $fileName! = "...") { Be sure to exclude two special files, or you'll regret it. $subFile = $directory. " /". $fileName; Connect the file name and directory name. if (Is_dir ($subFile)) { If it is a directory, continue to execute itself Deldir ($subFile); } if (Is_file ($subFile)) { If it is a normal file, delete it directly Unlink ($subFile); } } } Closedir ($dir _handle); Close handle RmDir ($directory); Run to this is already empty directory, directly delete } } } Deldir ("PM4"); /* * Customize a recursive function to copy or move a directory */ Copy () Copy an ordinary file mkdir () Create a Directory function Copydir ($directory, $dirTo) { Two parameters, one is the source directory, the other is the target directory if (Is_file ($dirTo)) { Determine if the target is a normal file, exit the method directly echo "Target is not a directory, cannot complete replication"; Return } if (!file_exists ($dirTo)) { Determine if the directory does not exist, create the directory mkdir ($dirTo); } if ($dir _handle=opendir ($directory)) { while ($fileName =readdir ($dir _handle)) { if ($fileName! = "." && $fileName! = "...") { $subFile = $directory. " /". $fileName; $subToFile = $dirTo. " /". $fileName; if (Is_dir ($subFile)) { Copydir ($subFile, $subToFile); } if (Is_file ($subFile)) { Copy ($subFile, $subToFile); } } } Closedir ($dir _handle); } } Copydir ("PM3", "pm4"); ?> Copy Code

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