Returns an associative array of option / argument pairs
based on the options format specified in options, or
FALSE on an error.
The options parameter
may contain the following elements: individual characters,
and characters followed by a colon to indicate an option
argument is to follow. For example, an option string x recognizes an option -x, and an option string
x: recognizes an option and argument -x argument. It does not matter if an argument
has leading white space.
This function will return an array of option / argument
pairs. If an option does not have an argument, the value will
be set to FALSE.
注: This function is currently not available on Windows