PHP File System Functions

#	Function	Description
1	basename	Returns trailing name component of path
2	chgrp	Changes file group
3	chmod	Changes file mode
4	chown	Changes file owner
5	clearstatcache	Clears file status cache
6	copy	Copies file
7	delete	See unlink or unset
8	dirname	Returns parent directory's path
9	disk_free_space	Returns available space on filesystem or disk partition
10	disk_total_space	Returns the total size of a filesystem or disk partition
11	diskfreespace	Alias of disk_free_space
12	fclose	Closes an open file pointer
13	feof	Tests for end-of-file on a file pointer
14	fflush	Flushes the output to a file
15	fgetc	Gets character from file pointer
16	fgetcsv	Gets line from file pointer and parse for CSV fields
17	fgets	Gets line from file pointer
18	fgetss	Gets line from file pointer and strip HTML tags
19	file_exists	Checks whether a file or directory exists
20	file_get_contents	Reads entire file into a string
21	file_put_contents	Write a string to a file
22	file	Reads entire file into an array
23	fileatime	Gets last access time of file
24	filectime	Gets inode change time of file
25	filegroup	Gets file group
26	fileinode	Gets file inode
27	filemtime	Gets file modification time
28	fileowner	Gets file owner
29	fileperms	Gets file permissions
30	filesize	Gets file size
31	filetype	Gets file type
32	flock	Portable advisory file locking
33	fnmatch	Match filename against a pattern
34	fopen	Opens file or URL
35	fpassthru	Output all remaining data on a file pointer
36	fputcsv	Format line as CSV and write to file pointer
37	fputs	Alias of fwrite
38	fread	Binary-safe file read
39	fscanf	Parses input from a file according to a format
40	fseek	Seeks on a file pointer
41	fstat	Gets information about a file using an open file pointer
42	ftell	Returns the current position of the file read/write pointer
43	ftruncate	Truncates a file to a given length
44	fwrite	Binary-safe file write
45	glob	Find pathnames matching a pattern
46	is_dir	Tells whether the filename is a directory
47	is_executable	Tells whether the filename is executable
48	is_file	Tells whether the filename is a regular file
49	is_link	Tells whether the filename is a symbolic link
50	is_readable	Tells whether a file exists and is readable
51	is_uploaded_file	Tells whether the file was uploaded via HTTP POST
52	is_writable	Tells whether the filename is writable
53	is_writeable	Alias of is_writable
54	lchgrp	Changes group ownership of symlink
55	lchown	Changes user ownership of symlink
56	link	Create a hard link
57	linkinfo	Gets information about a link
58	lstat	Gives information about a file or symbolic link
59	mkdir	Makes directory
60	move_uploaded_file	Moves an uploaded file to a new location
61	parse_ini_file	Parse a configuration file
62	parse_ini_string	Parse a configuration string
63	pathinfo	Returns information about a file path
64	pclose	Closes process file pointer
65	popen	Opens process file pointer
66	readfile	Outputs a file
67	readlink	Returns the target of a symbolic link
68	realpath_cache_get	Get realpath cache entries
69	realpath_cache_size	Get realpath cache size
70	realpath	Returns canonicalized absolute pathname
71	rename	Renames a file or directory
72	rewind	Rewind the position of a file pointer
73	rmdir	Removes directory
74	set_file_buffer	Alias of stream_set_write_buffer
75	stat	Gives information about a file
76	symlink	Creates a symbolic link
77	tempnam	Create file with unique file name
78	tmpfile	Creates a temporary file
79	touch	Sets access and modification time of file
80	umask	Changes the current umask
81	unlink	Deletes a file