For International numbers, only +61 will be valid, as this is Australia's dial code, and the format MUST be +61.3, where 3 represents the state dial code, in this case, Victoria.
Note: If the VALIDATE_AU_PHONENUMBER_STRICT flag is not supplied, then all spaces, dashes and parenthesis are removed before validation. You will have to strip these yourself if your data storage does not allow these characters.
Todo: Check that $flags contains a valid flag.
The telephone number
A list of options 'strict' => true - do not common characters 'national' => true - validate national numbers 'indial' => true - 13, 1300, 1800, 1900 numbers 'other' => true - uncommon phone validations like premium sms, data and personal numbers 'international => true - international numbers for Australia (eg. +61.3 9999 9999)