| basename(path)
| String | Returns the file name component from a fully qualified path. |
| chgrp(filename, group)
| Bool | Changes the group of the filename. |
| chmod(filename, mode)
| Bool | Changes the mode of the filename. |
| chown(filename, user)
| Bool | Changes the owner of the filename. |
| clearstatcache()
| void | Clears the state cache. |
| copy(source, dest)
| Bool | Copies a file from the source to the destination. |
| dirname(path)
| String | Returns the directory name component from a fully qualified path. |
| diskfreespace(dir)
| float | Returns the amount of free space in the specified directory. |
| fclose(fp)
| Bool | Closes a file stream. |
| feof(fp)
| Boolean | Checks to see if you are at the end of the specified file stream. If you are at the end of the stream feof() will return true, otherwise it will return false. |
| fgetc(fp)
| String | Reads the next character from the file stream. |
| fgetcsv(fp, length, [delimiter])
| Array | Returns an array with the next line separated by commas or a specified delimiter. |
| fgets(p, length)
| String | Reads a line of up to length-1. |
| fegetss(fp, length)
| String | Reads a line of up to length-1 while stripping out any HTML tags. |
| file(filename)
| Array | Reads the entire specified file into an array. |
| file_exists(filename)
| Boolean | Returns true if the file exists, and false if the file does not exist. |
| fileatime(filename)
| Integer | Returns the time the file was last accessed. |
| filectime(filename)
| Integer | Returns the time the file was last changed. |
| filegroup(filename)
| Integer | Returns the ID of the owner group. |
| fileinode(filename)
| Integer | Returns the inode number for the file. |
| filemtime(filename)
| Integer | Returns the time the file was last modified. |
| fileowner(filename)
| Integer | Returns the ID of the owner of the file. |
| fileperms(filename)
| Integer | Returns the permissions of the specified file. |
| filesize(filename)
| Integer | Returns the size in bytes of the file. |
| filetype(filename)
| String | Returns the type of file. |
| flock(fp, operation)
| Boolean | Sets or releases a lock on the specified file stream. |
| fopen(filename, mode)
| Integer | Opens a file in the specified mode. |
| fpassthru(fp)
| Integer | Outputs data from the current position in the file to the end of the file. |
| fputs(fp, string, [length])
| Integer | Writes the specified string to the file stream. |
| fread(fp, length)
| String | Reads length bytes from the specified file stream. |
| fseek(fp, offset)
| Integer | Moves the file pointer to offset in the specified file stream. |
| ftell(fp)
| Integer | Returns the current position of the file pointer. |
| fwrite(fp, string, [length])
| Integer | Writes string to the specified file stream. |
| is_dir(filename)
| Boolean | Checks to see if the specified file is a directory. |
| is_executable(filename)
| Boolean | Checks to see if the specified file is a executable. |
| is_file(filename)
| Boolean | Checks to see if the specified file is a file. |
| is_link(filename)
| Boolean | Checks to see if the specified file is a symbolic link. |
| is_readable(filename)
| Boolean | Checks to see if the specified file is readable. |
| is_writable(filename)
| Boolean | Checks to see if the specified file is writable. |
| link(target, link)
| Boolean | Creates a link. |
| linkinfo(path)
| Integer | Returns information about the specified link. |
| lstat(filename)
| Array | Returns information about the specified file. |
| mkdir(pathname, mode)
| Boolean | Creates a directory with the specified mode. |
| pclose(fp)
| Integer | Closes a file pointer to a pipe that has been opened with the popen() function. |
| popen(command, mode)
| Integer | Opens a pipe by using the specified command. |
| readfile(filename)
| Integer | Reads and outputs the specified file. |
| readlink(path)
| String | Returns the target of the specified symbolic link. |
| rename(from, to)
| Boolean | Renames a file from a file name to a file name. |
| rewind(fp)
| Boolean | Resets the file pointer to the beginning of the specified file stream. |
| rmdir(path)
| Boolean | Removes the specified directory. |
| set_file_buffer(fp, buffer)
| Integer | Sets the size of the buffer for the file stream. |
| stat(filename)
| Array | Returns information about the specified file. |
| symlink(target, link)
| Boolean | Creates a symbolic link. |
| tempnam(dir, prefix)
| String | Creates a unique temporary file name in the specified directory. |
| touch(filename, time)
| Boolean | Sets the modification time of the specified file name. |
| umask([mask])
| Integer | Sets PHP’s specific umask and returns the old umask. |
| unlink(filename)
| Boolean | Deletes the specified file. |
