Useful File Functions

basename — Returns trailing name 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 parent directory's path
disk_free_space — Returns available space on filesystem or disk partition
disk_total_space — Returns the total size of a filesystem or disk partition
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 — Returns the current position of the file read/write pointer
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 a file exists and 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
parse_ini_string — Parse a configuration string
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_cache_get — Get realpath cache entries
realpath_cache_size — Get realpath cache size
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

Certified PHP Developer Learning Resources Useful File Functions

Useful File Functions