TitanFrameworkOptionFont::getGoogleFontURLs PHP Method

    public function getGoogleFontURLs()
    {
        $urls = array();
        // Gather all the fonts that we need to load, some may be repeated so we need to
        // load them once after gathering them
        $fontsToLoad = array();
        foreach (self::$optionsToEnqueue as $option) {
            $fontValue = $option->getValue();
            if (empty($fontValue['font-family'])) {
                continue;
            }
            if ($fontValue['font-family'] == 'inherit') {
                continue;
            }
            if ($fontValue['font-type'] != 'google') {
                continue;
            }
            // Stop load Custom Fonts
            if (in_array($fontValue['font-family'], $this->settings['fonts'])) {
                continue;
            }
            // Get all the fonts that we need to load
            if (empty($fontsToLoad[$fontValue['font-family']])) {
                $fontsToLoad[$fontValue['font-family']] = array();
            }
            // Get the weight
            $variant = $fontValue['font-weight'];
            if ($variant == 'normal') {
                $variant = '400';
            } else {
                if ($variant == 'bold') {
                    $variant = '500';
                } else {
                    if ($variant == 'bolder') {
                        $variant = '800';
                    } else {
                        if ($variant == 'lighter') {
                            $variant = '100';
                        }
                    }
                }
            }
            if ($fontValue['font-style'] == 'italic') {
                $variant .= 'italic';
            }
            $fontsToLoad[$fontValue['font-family']][] = $variant;
        }
        // Font subsets, allow others to change this
        $subsets = apply_filters('tf_google_font_subsets_' . $this->getOptionNamespace(), array('latin', 'latin-ext'));
        // Enqueue the Google Font
        foreach ($fontsToLoad as $fontName => $variants) {
            // Always include the normal weight so that we don't error out
            $variants[] = '400';
            $variants = array_unique($variants);
            $fontUrl = sprintf('//fonts.googleapis.com/css?family=%s:%s&subset=%s', str_replace(' ', '+', $fontName), implode(',', $variants), implode(',', $subsets));
            $fontUrl = apply_filters('tf_enqueue_google_webfont_' . $this->getOptionNamespace(), $fontUrl, $fontName);
            if ($fontUrl != false) {
                $urls[$fontName] = $fontUrl;
            }
        }
        return $urls;
    }