The filesystem functions allow you to access and manipulate the filesystem.
| Function | Description |
|---|---|
| basename() | Returns the filename component of a path. |
| chmod() | Changes the file mode. |
| copy() | Copies a file |
| chgrp() | Changes the file group |
| chown() | Changes the file owner. |
| delete() | See unlink() or unset() |
| disk_free_space() | Returns available space on filesystem or disk partition. |
| clearstatcache() | Clears the file status cache |
| copy() | Copies a file |
| fclose() | Closes an open file pointer |
| fflush() | Flushes the buffered output to a file. |
| dirname() | Returns the path of the parent directory. |
| disk_total_space() | Returns the total size of a filesystem or disk partition |
| fgetss() | Reads a specific number of bytes from a file and strip HTML tags and PHP code. |
| diskfreespace() | Returns available space on filesystem or disk partition. Alias of disk_free_space(). |
| feof() | Tests for end-of-file on a file pointer. |
| fgetc() | Returns a character from file pointer. |
| fgetcsv() | Gets line from file pointer and parse for CSV fields. |
| fgets() | Read a specific number of bytes from a file. |
| file_put_contents() | Write a string to a file |
| file() | Reads entire file into an array |
| filegroup() | Returns the group ID of a file |
| file_exists() | Checks whether a file or directory exists. |
| file_get_contents() | Reads entire file into a string |
| fileatime() | Returns the last access time of a file |
| filectime() | Returns the last change time of a file |
| fileinode() | Returns the inode number of the file. |
| filemtime() | Returns the last modification time of a file |
| fileowner() | Returns the user ID of the owner of the file |
| fileperms() | Returns permissions for the file |
| filesize() | Returns the file size |
| filetype() | Returns the file type |
| flock() | Locks or releases a file |
| fnmatch() | Matches a filename or string against a specified pattern |
| fopen() | Opens a 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() | Reads a specific number of bytes from a file |
| fscanf() | Parses input from a file according to a specified format |
| fseek() | Seeks on a file pointer |
| fstat() | Returns 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() | Writes the contents of string to the file pointer |
| glob() | Returns an array of filenames/directories matching a specified pattern |
| is_dir() | Checks whether the file is a directory |
| is_executable() | Checks whether the file is executable |
| is_file() | Checks whether the file is a regular file |
| is_link() | Checks whether the filename is a symbolic link |
| is_readable() | Checks whether a file exists and is readable |
| is_uploaded_file() | Checks whether the file was uploaded via HTTP POST |
| is_writable() | Checks 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() | Returns information about a link |
| lstat() | Returns information about a file or symbolic link |
| mkdir() | Creates a 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() | Reads a file and writes it to the output buffer |
| readlink() | Returns the target of a symbolic link |
| realpath() | Returns canonicalized absolute pathname |
| realpath_cache_get() | Returns realpath cache entries |
| realpath_cache_size() | Returns realpath cache size |
| rename() | Renames a file or directory |
| rewind() | Rewind the position of a file pointer |
| rmdir() | Removes an empty directory |
| set_file_buffer() | Sets the buffer size of a file |
| stat() | Returns information about a file |
| symlink() | Creates a symbolic link |
| tempnam() | Create temporary file with unique file name |
| tmpfile() | Creates a unique temporary file |
| touch() | Sets access and modification time of file |
| umask() | Changes the current umask |
| unlink() | Deletes a file |
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