PHP brightness Exemples

Exemple #1

Fichier : paintr.php Projet : robmyers/paintr

function compare_brightness($a, $b)
{
    $a_brightness = brightness($a);
    $b_brightness = brightness($b);
    if ($a_brightness == $b_brightness) {
        return 0;
    }
    return $a_brightness < $b_brightness ? -1 : 1;
}

Exemple #2

Fichier : _util.inc.php Projet : masroore/chrisreloaded

function invertColor($hexnum)
{
    // to rgb
    $brightness = brightness(hex2rgb($hexnum));
    if ($brightness > 130) {
        return '#000000';
    }
    return '#ffffff';
}