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<?php |
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|
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// If this file is called directly, abort. |
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if ( ! defined( 'WPINC' ) ) { |
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die; |
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} |
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|
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|
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/** |
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* Print HTML of alternate link with hreflang for each available languages |
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* |
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* @return void |
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*/ |
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function wplng_link_alternate_hreflang() { |
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|
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echo '<meta name="google" content="notranslate">' . PHP_EOL; |
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|
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if ( ! wplng_url_is_translatable() ) { |
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return; |
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} |
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|
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$html = PHP_EOL; |
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$language_website = wplng_get_language_website(); |
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$languages_target = wplng_get_languages_target(); |
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$url_x_default = ''; |
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|
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if ( empty( $language_website ) || empty( $languages_target ) ) { |
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return; |
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} |
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|
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// Get and clear original URL |
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$url_original = wplng_get_url_original(); |
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$url_original = remove_query_arg( |
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array( 'wplng-mode', 'wplng-load', 'nocache' ), |
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$url_original |
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); |
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|
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// Create the starting comment |
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$html .= '<!-- This website is made multilingual with the wpLingua plugin -->'; |
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$html .= PHP_EOL; |
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|
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// Create meta generator |
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$html .= '<meta'; |
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$html .= ' name="generator"'; |
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$html .= ' content="wpLingua ' . esc_attr( WPLNG_PLUGIN_VERSION ) . '"'; |
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$html .= '/>' . PHP_EOL; |
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|
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if ( empty( get_option( 'wplng_hreflang', true ) ) ) { |
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echo $html . PHP_EOL; |
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return; |
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} |
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|
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// Create alternate link for website language |
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|
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if ( 'en' === $language_website['id'] ) { |
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$url_x_default = $url_original; |
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} |
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|
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$html .= '<link'; |
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$html .= ' rel="alternate"'; |
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$html .= ' href="' . esc_url( $url_original ) . '"'; |
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$html .= ' hreflang="' . esc_attr( $language_website['id'] ) . '"'; |
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$html .= '/>' . PHP_EOL; |
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|
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// Create alternate link for each target languages |
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foreach ( $languages_target as $language_target ) { |
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|
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$url = wplng_url_translate( |
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$url_original, |
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$language_target['id'] |
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); |
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|
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if ( 'en' === $language_target['id'] ) { |
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$url_x_default = $url; |
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} |
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|
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$html .= '<link'; |
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$html .= ' rel="alternate"'; |
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$html .= ' href="' . esc_url( $url ) . '"'; |
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$html .= ' hreflang="' . esc_attr( $language_target['id'] ) . '"'; |
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$html .= '/>' . PHP_EOL; |
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} |
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|
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// Create alternate link for x-default |
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|
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if ( '' === $url_x_default ) { |
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$url_x_default = $url_original; |
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} |
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|
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$url_x_default = apply_filters( 'wplng_hreflang_x_default', $url_x_default ); |
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|
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if ( ! empty( $url_x_default ) ) { |
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$html .= '<link'; |
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$html .= ' rel="alternate"'; |
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$html .= ' href="' . esc_url( $url_x_default ) . '"'; |
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$html .= ' hreflang="x-default"'; |
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$html .= '/>' . PHP_EOL; |
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} |
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|
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// Create the ending comment |
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$html .= '<!-- / wpLingua plugin. -->' . PHP_EOL . PHP_EOL; |
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|
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echo $html; |
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} |
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|
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|
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/** |
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* Disable web browser automatic translation by adding attribute to HTML tag |
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* <html lang="??_??" translate="no"> |
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* |
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* @param string $attr |
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* @return string $attr |
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*/ |
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function wplng_disable_web_browser_auto_translate( $attr ) { |
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return $attr . ' translate="no"'; |
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} |
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|
