Problem with Hreflang

Hello @jbanosr

Thank you for reaching out to us, Yes hreflang attribute was not being added to link tags added by AMP plugin, can you please try adding the following code snippet at end of your child themes function.php file

/**
 * Add amphtml link.
 *
 * If there are known validation errors for the current URL then do not output anything.
 *
 * @since 1.0
 */
function amp_add_amphtml_link_hreflang() {
	if ( function_exists( 'amp_is_canonical' ) && ! amp_is_canonical() ) {
		$amp_url = amp_add_paired_endpoint( amp_get_current_url() );
		if ( $amp_url ) {
			$amp_url          = remove_query_arg( 'noamp', $amp_url );
			printf( '<link rel="amphtml" href="%s" hreflang="%s">', esc_url( $amp_url ), get_locale() );
		}
	}
}

add_action( 'wp_head', 'amp_add_amphtml_link_hreflang' );

We hope this helps!

Hi Milind,

I added the code and now the error is different. Could you help me, please? https://ibb.co/F8MJBKh

Thank you so much for helping

Hello @jbanosr

I think it needs a language code in ISO-0639-1 format, since you are using polylang plugin let’s use the pll_current_language('slug');

Please replace the previous code snippet with the updated one.

/**
 * Add amphtml link.
 *
 * If there are known validation errors for the current URL then do not output anything.
 *
 * @since 1.0
 */
function amp_add_amphtml_link_hreflang() {
	if ( function_exists( 'amp_is_canonical' ) && ! amp_is_canonical() ) {
		$amp_url = amp_add_paired_endpoint( amp_get_current_url() );
		// Get the locale code.
		$locale_code = get_locale();
		// Covert to ISO 639-1 language code.
		$locale_code = substr( $locale_code, 0, 2 );
		
		// ploylang support.
		if( function_exists( 'pll_current_language' ) ) {
			$locale_code = pll_current_language('slug');
		}

		if ( $amp_url ) {
			$amp_url          = remove_query_arg( 'noamp', $amp_url );
			printf( '<link rel="amphtml" href="%s" hreflang="%s">', esc_url( $amp_url ), $locale_code );
		}
	}
}

add_action( 'wp_head', 'amp_add_amphtml_link_hreflang' );

Hi Milind,

I added the code and I have different issues:

1- AMP pages are missing country issue. (es-ES, pt-PT, es-MX).
2- Posts AMP version have “Canonical does not match hreflang href” and “Alternate does not link back issues.

Image: https://ibb.co/ZxyXK24

Thank you for helping

Hello @jbanosr

Those alternate links are being added by polylang plugin, it will be best to contact polylang support as they can guide you better regarding the code that has been added by thier plugin.

Hello @jbanosr

Sorry, I forgot to give you code that will remove the existing <link rel="amphtml"> tag in my previous response, please also add the following snippet

add_action( 'template_redirect', static function () {
 	remove_action( 'wp_head', 'amp_add_amphtml_link' );
} );

@jbanosr As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you require any further assistance.