Automattic\WooCommerce\Internal\Admin\EmailPreview

EmailPreview::ensure_links_open_in_new_tab │ public │ WC 1.0

Ensure links open in new tab. User in WooCommerce Settings, so the links don't open inside the iframe.

Method of the class: EmailPreview{}

No Hooks.

Returns

String.

Usage

$EmailPreview = new EmailPreview();
$EmailPreview->ensure_links_open_in_new_tab( $content );
$content(string) (required)
Email content HTML.

EmailPreview::ensure_links_open_in_new_tab() code WC 10.3.6

woocommerce/src/Internal/Admin/EmailPreview/EmailPreview.php 
public function ensure_links_open_in_new_tab( string $content ) {
	if ( empty( $content ) || strpos( $content, '<a' ) === false ) {
		return $content;
	}

	if ( ! class_exists( 'DOMDocument' ) ) {
		return $content;
	}

	// Suppress libxml errors to prevent them from being displayed.
	$previous_use_internal_errors = libxml_use_internal_errors( true );

	try {
		$dom = new \DOMDocument();

		// Add UTF-8 encoding and load with error suppression flags.
		$html_with_encoding = '<?xml encoding="UTF-8">' . $content;
		$dom->loadHTML(
			$html_with_encoding,
			LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD | LIBXML_NOWARNING | LIBXML_NOERROR
		);

		$links = $dom->getElementsByTagName( 'a' );
		foreach ( $links as $link ) {
			$link->setAttribute( 'target', '_blank' );
			$link->setAttribute( 'rel', 'noopener' );
		}

		$result = $dom->saveHTML();

		// Remove the XML declaration we added earlier, it's not meant to be used in an HTML document.
		$result = preg_replace( '/<\?xml[^>]*>\s*/i', '', $result );

		return $result;
	} catch ( \Exception $e ) {
		return $content;
	} finally {
		libxml_use_internal_errors( $previous_use_internal_errors );
		libxml_clear_errors();
	}
}