File System Functions In php

 basename  -- Returns filename component of path ..

 chgrp  -- Changes file group ..

 chmod  -- Changes file mode.

  chown  -- Changes file owner .

 clearstatcache  -- Clears file status cache .

 copy  -- Copies file .

 delete  -- See unlink() or unset() .

 dirname  -- Returns directory name component of path .

 disk_free_space  -- Returns available space in directory .

 disk_total_space  -- Returns the total size of a directory .

 diskfreespace  -- Alias of disk_free_space() .

 fclose  -- Closes an open file pointer.

  feof  -- Tests for end-of-file on a file pointer.

  fflush  -- Flushes the output to a file .

 fgetc  -- Gets character from file pointer.

  fgetcsv  -- Gets line from file pointer and parse for CSV fields.

  fgets  -- Gets line from file pointer.

  fgetss  -- Gets line from file pointer and strip HTML tags.

  file_exists  -- Checks whether a file or directory exists.

  file_get_contents  -- Reads entire file into a string.

  file_put_contents  -- Write a string to a file .

 file  -- Reads entire file into an array .

 fileatime  -- Gets last access time of file .

 filectime  -- Gets inode change time of file.

  filegroup  -- Gets file group.

  fileinode  -- Gets file inode.

  filemtime  -- Gets file modification time .

 fileowner  -- Gets file owner.

  fileperms  -- Gets file permissions.

  filesize  -- Gets file size.

  filetype  -- Gets file type.

  flock  -- Portable advisory file locking .

 fnmatch  -- Match filename against a pattern.

  fopen  -- Opens file or URL.

  fpassthru  -- Output all remaining data on a file pointer.

  fputcsv  -- Format line as CSV and write to file pointer.

  fputs  -- Alias of fwrite().

 fread  -- Binary-safe file read.

  fscanf  -- Parses input from a file according to a format.

  fseek  -- Seeks on a file pointer .

 fstat  -- Gets information about a file using an open file pointer.

  ftell  -- Tells file pointer read/write position .

 ftruncate  -- Truncates a file to a given length .

 fwrite  -- Binary-safe file write .

 glob  -- Find pathnames matching a pattern.

  is_dir  -- Tells whether the filename is a directory.

  is_executable  -- Tells whether the filename is executable.

  is_file  -- Tells whether the filename is a regular file.

  is_link  -- Tells whether the filename is a symbolic link .

 is_readable  -- Tells whether the filename is readable.

  is_uploaded_file  -- Tells whether the file was uploaded via HTTP POST.

  is_writable  -- Tells whether the filename is writable.

  is_writeable  -- Alias of is_writable().

 lchgrp  -- Changes group ownership of symlink.

  lchown  -- Changes user ownership of symlink.

  link  -- Create a hard link.

  linkinfo  -- Gets information about a link.

  lstat  -- Gives information about a file or symbolic link.

  mkdir  -- Makes directory .

 move_uploaded_file  -- Moves an uploaded file to a new location .

 parse_ini_file  -- Parse a configuration file.

  pathinfo  -- Returns information about a file path .

 pclose  -- Closes process file pointer .

 popen  -- Opens process file pointer.

  readfile  -- Outputs a file.

  readlink  -- Returns the target of a symbolic link .

 realpath  -- Returns canonicalized absolute pathname.

  rename  -- Renames a file or directory .

 rewind  -- Rewind the position of a file pointer .

 rmdir  -- Removes directory .

 set_file_buffer  -- Alias of stream_set_write_buffer().

 stat  -- Gives information about a file .

 symlink  -- Creates a symbolic link .

 tempnam  -- Create file with unique file name.

 tmpfile  -- Creates a temporary file .

 touch  -- Sets access and modification time of file.

  umask  -- Changes the current umask .

 unlink  -- Deletes a file.