How can bitwise operations be used to efficiently calculate complementary colors in PHP?

To efficiently calculate complementary colors in PHP using bitwise operations, you can use the XOR operator (^) to invert the color values. By XORing each color component (red, green, and blue) with 255, you can obtain the complementary color. This method is efficient because bitwise operations are faster than traditional arithmetic operations when working with binary data.

function calculateComplementaryColor($color) {
    $red = 255 - ($color >> 16 & 0xFF);
    $green = 255 - ($color >> 8 & 0xFF);
    $blue = 255 - ($color & 0xFF);
    
    return ($red << 16) | ($green << 8) | $blue;
}

$color = 0xFFAABB; // Example color
$complementaryColor = calculateComplementaryColor($color);
echo "Complementary color: #" . dechex($complementaryColor);