Gets a character from the given file pointer.
The file pointer must be valid, and must point to a file successfully opened by fopen or fsockopen (and not yet closed by fclose).
Returns a string containing a single character read from the file pointed to by stream. Returns false on EOF.
This function may return Boolean false, but may also return a non-Boolean value which evaluates to false. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.
This function is binary-safe.