fgetc() - reads a file one character at a time 
fgets() - reads blocks or "chunks" of files all at once 
file() - reads an entire file into an array, creating new array elements for every line 
file_exists() - checks to see if a file exists on the system, good for error handeling 
filectime() - returns the last time the file was changed as a timestamp 
filemtime() - returns the last modified time of the file as a timestamp 
fileowner() - returns user ID of the owner of the file 
filegroup() - returns group ID of the group of the file 
copy() - copies the file 
rename() - renames the file 
unlink() - deletes the file