Functions with many parameters need to be split onto several lines to keep the 80 chars/line limit. The first parameters may be put onto the same line as the function name if there is enough space. Subsequent parameters on following lines are to be indented 4 spaces. The closing parenthesis and the opening brace are to be put onto the next line, on the same indentation level as the "function" keyword.
function someFunctionWithAVeryLongName($firstParameter = 'something', $secondParameter = 'booooo',
$third = null, $fourthParameter = false, $fifthParameter = 123.12,
$sixthParam = true