On this page, you will find the functions of PHP used to manipulate and process the files. These functions are part of the core language hence, no package installation is required.
The behavior of these functions may vary depending on the php.ini file.
Note that, on Unix, a forward slash (/) is used as the directory separator and on Windows, both forward-slash (/) and backslash (\) can be used.
| Function | Description |
|---|---|
| basename() | Returns the filename component of a path |
| chgrp() | Change the file group |
| chmod() | Change the file mode |
| chown() | Change the file owner |
| clearstatcache() | Clear the file status cache |
| copy() | Copy a file |
| delete() | See unlink() |
| dirname() | Returns the directory name component of a path |
| disk_free_space() | Returns the free space of a filesystem or disk |
| disk_total_space() | Returns the total size of a filesystem or disk |
| diskfreespace() | Alias of disk_free_space() |
| fclose() | Close an open file |
| feof() | Check if the “end-of-file” (EOF) has been reached for an open file |
| fflush() | Flushe buffered output to an open file |
| fgetc() | Returns a single character from an open file |
| fgetcsv() | Returns a line from an open CSV file |
| fgets() | Returns a line from an open file |
| fgetss() | Deprecated from PHP 7.3. Returns a line from an open file – stripped from HTML and PHP tags |
| file() | Read a file into an array |
| file_exists() | Check whether or not a file or directory exists |
| file_get_contents() | Read a file into a string |
| file_put_contents() | Write data to a file |
| fileatime() | Returns the last access time of a file |
| filectime() | Returns the last change time of a file |
| filegroup() | Returns the group ID of a file |
| fileinode() | Returns the inode number of a file |
| filemtime() | Returns the last modification time of a file |
| fileowner() | Returns the user ID (owner) of a file |
| fileperms() | Returns the file’s permissions |
| filesize() | Returns the file size |
| filetype() | Returns the file type |
| flock() | Lock or releases a file |
| fnmatch() | Match a filename or string against a specified pattern |
| fopen() | Open a file or URL |
| fpassthru() | Read from the current position in a file – until EOF, and writes the result to the output buffer |
| fputcsv() | Format a line as CSV and writes it to an open file |
| fputs() | Alias of fwrite() |
| fread() | Read from an open file (binary-safe) |
| fscanf() | Parse input from an open file according to a specified format |
| fseek() | Seeks in an open file |
| fstat() | Returns information about an open file |
| ftell() | Returns the current position in an open file |
| ftruncate() | Truncate an open file to a specified length |
| fwrite() | Write to an open file (binary-safe) |
| glob() | Get an array of filenames/directories matching a specified pattern |
| is_dir() | Check whether a file is a directory |
| is_executable() | Check whether a file is executable |
| is_file() | Check whether a file is a regular file |
| is_link() | Check whether a file is a link |
| is_readable() | Check whether a file is readable |
| is_uploaded_file() | Check whether a file was uploaded via HTTP POST |
| is_writable() | Check whether a file is writable |
| is_writeable() | Alias of is_writable() |
| lchgrp() | Change the group ownership of a symbolic link |
| lchown() | Change the user ownership of a symbolic link |
| link() | Creates a hard link |
| linkinfo() | Returns information about a hard link |
| lstat() | Returns information about a file or symbolic link |
| mkdir() | Creates a directory |
| move_uploaded_file() | Move 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() | Close a pipe opened by popen() |
| popen() | Opens a pipe |
| readfile() | Read a file and writes it to the output buffer |
| readlink() | Returns the target of a symbolic link |
| realpath() | Returns the absolute pathname |
| realpath_cache_get() | Get real path cache entries |
| realpath_cache_size() | Get real path cache size |
| rename() | Rename a file or directory |
| rewind() | Rewind a file pointer |
| rmdir() | Remove an empty directory |
| set_file_buffer() | Alias of stream_set_write_buffer(). Sets the buffer size for write operations on the given file |
| stat() | Returns information about a file |
| symlink() | Creates a symbolic link |
| tempnam() | Creates a unique temporary file |
| tmpfile() | Creates a unique temporary file |
| touch() | Sets access and modification time of a file |
| umask() | Changes file permissions for files |
| unlink() | Deletes a file |
