protected function _get_permalink( $content ) {
		preg_match( '/<meta +?property=["\']og:url["\'][^\/>]*? content=["\']([^"\']+?)["\'].*?\/?>/si', $content, $reg );
		if ( ! empty( $reg[1] ) ) {
			return $reg[1];
		}

		return $this->url;
	}
protected function _get_permalink( $content ) {
		preg_match( '/<meta +?property=["\']og:url["\'][^\/>]*? content=["\']([^"\']+?)["\'].*?\/?>/si', $content, $reg );
		if ( ! empty( $reg[1] ) ) {
			return $reg[1];
		}

		return $this->url;
	}
protected function _get_permalink ( $ content ) { preg_match ( '/<meta +?property=["\']og:url["\'][^\/>]*? content=["\']([^"\']+?)["\'].*?\/?>/si' , $ content , $ reg ) ; if ( ! empty ( $ reg [ 1 ] ) ) { return $ reg [ 1 ] ; } return $ this -> url ; }
Return URL of the page you want to blog card

@param string $content
@return string
Return URL of the page you want to blog card