Doxygen for php doesn't handle default parameter array

Question

I tried searching a solution for my problem, but I can't find anything. My problem is that doxygen for php doesn't handle default parameters if they are an array:

Code:

/**
 * @brief convert rgb values to hexa decimal, and return array.
 * @param  int $red   : 0 - 255
 * @param  int $green : 0 - 255
 * @param  int $blue  : 0 - 255
 * @param  array  $default
 * @return array
 */
public static function rgb2hex(
    int   $red   = 0,
    int   $green = 0,
    int   $blue  = 0,
    array $default = ['r' => 0, 'g' => 0, 'b' => 0]
) : array {
...
    return [
        'r' => $r,
        'g' => $g,
        'b' => $b
    ];
}

Rendering:

Screen sample: https://i.stack.imgur.com/bJhiu.png

Answer 1

doxygen 1.9 2021 does not understand PHP array = [ ];,

A workaround is by using old school: array = ( );

Note: see the difference between [ ], and array = ( );