//WordPress 整站链接添加 target="_blank",快速引入百度 MIP
add_action('get_header', 'Fanly_mip_target_blank');
function Fanly_mip_target_blank(){
    function Fanly_mip_target_blank_main ($content){
		$regexp = "<as[^>]*href=("??)([^" >]*?)1[^>]*>";
		if(preg_match_all("/$regexp/siU", $content, $matches, PREG_SET_ORDER)) {
			if( !empty($matches) ) {
				$srcUrl = get_option('siteurl');
				for ($i=0; $i < count($matches); $i++){
					$tag = $matches[$i][0];
					$tag2 = $matches[$i][0];
					$url = $matches[$i][0];
					$target = '';
					$pattern = '/targets*=s*"s*_blanks*"/';
					preg_match($pattern, $tag2, $match, PREG_OFFSET_CAPTURE);
					if( count($match) < 1 ){$target  .= ' target="_blank" ';}
					$tag = rtrim ($tag,'>');
					$tag .= $target .'>';
					$content = str_replace($tag2,$tag,$content);
				}
			}
		}
		$content = str_replace(']]>', ']]>', $content);
		return $content;
	}
	ob_start("Fanly_mip_target_blank_main");
}