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PHP File & Filesystem Functions

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Filesystem Functions

Filesystem functions allow you to access and to manipulate various aspects of the filesystem. Just about any function you could dream of needing (and some you might never need) can be found in the following list.

Function Description
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