Random Color Generator - Hex Color Code in PHP

Generate random hex color code using this simple random color generator. Creator dynamic background colors using this random color generator in php.

function randomColorGenerator() {
    $colorCode = '#';
    for($i=0; $i<6; $i++) {
        $randValue = rand(0 , 15);
        switch ($randValue) {
            case 10: $randValue = 'A'; break;
            case 11: $randValue = 'B'; break;
            case 12: $randValue = 'C'; break;
            case 13: $randValue = 'D'; break;
            case 14: $randValue = 'E'; break;
            case 15: $randValue = 'F'; break;
        }
        $colorCode .= $randValue;
    }
    return $colorCode;
}