Cải thiện tính năng tìm kiếm trên theme GeneratePress

//CẢI THIỆN TÌM KIẾM MẶC ĐỊNH THEME GENERATEPRESS
add_action('pre_get_posts',function($query){
if(is_admin()||!$query->is_main_query()||!$query->is_search())return;
$query->set('post_type','post');
$query->set('post_status','publish');
},1);
add_filter('posts_search',function($search,$wp_query){
if(is_admin()||!$wp_query->is_main_query()||!$wp_query->is_search())return $search;
global $wpdb;
$s=$wp_query->get('s');
if(empty($s))return $search;
$s_clean=hocban_vn_remove_accents($s);
$search_term='%'.$wpdb->esc_like($s).'%';
$search_term_clean='%'.$wpdb->esc_like($s_clean).'%';
$search=$wpdb->prepare(" AND ({$wpdb->posts}.post_title LIKE %s OR {$wpdb->posts}.post_content LIKE %s OR {$wpdb->posts}.post_title LIKE %s OR {$wpdb->posts}.post_content LIKE %s) ",$search_term,$search_term,$search_term_clean,$search_term_clean);
return $search;
},20,2);
add_filter('the_posts',function($posts,$wp_query){
if(is_admin()||!$wp_query->is_main_query()||!$wp_query->is_search()||empty($posts))return $posts;
$s=mb_strtolower(get_search_query(false),'UTF-8');
$s_clean=hocban_vn_remove_accents($s);
foreach($posts as $post){
$clean_title=hocban_vn_remove_accents(mb_strtolower($post->post_title,'UTF-8'));
$clean_content=hocban_vn_remove_accents(mb_strtolower(wp_strip_all_tags($post->post_content),'UTF-8'));
$count_title=mb_substr_count($clean_title,$s_clean,'UTF-8');
$count_content=mb_substr_count($clean_content,$s_clean,'UTF-8');
$post->hocban_score=($count_title*5)+$count_content;
}
usort($posts,function($a,$b){
if($b->hocban_score===$a->hocban_score){
return strtotime($b->post_date)-strtotime($a->post_date);
}
return $b->hocban_score-$a->hocban_score;
});
return $posts;
},20,2);
function hocban_vn_remove_accents($str){
if(empty($str))return '';
$dict=['a'=>['à','á','ả','ã','ạ','â','ầ','ấ','ẩ','ẫ','ậ','ă','ằ','ắ','ẳ','ẵ','ặ'],'e'=>['è','é','ẻ','ẽ','ẹ','ê','ề','ế','ể','ễ','ệ'],'i'=>['ì','í','ỉ','ĩ','ị'],'o'=>['ò','ó','ỏ','õ','ọ','ô','ồ','ố','ổ','ỗ','ộ','ơ','ờ','ớ','ở','ỡ','ợ'],'u'=>['ù','ú','ủ','ũ','ụ','ư','ừ','ứ','ử','ữ','ự'],'y'=>['ỳ','ý','ỷ','ỹ','ỵ'],'d'=>['đ']];
foreach($dict as $ascii=>$uni){$str=str_replace($uni,$ascii,$str);}
return $str;
}
function hocban_display_keyword_count():void{
if(!is_search()||!in_the_loop()||!is_main_query())return;
$s=trim((string)get_search_query(false));
if($s==='')return;
global $post;
$text_clean=hocban_vn_remove_accents(mb_strtolower($post->post_title.' '.wp_strip_all_tags($post->post_content),'UTF-8'));
$s_clean=hocban_vn_remove_accents(mb_strtolower($s,'UTF-8'));
$count=mb_substr_count($text_clean,$s_clean,'UTF-8');
if($count>0){
printf('<p class="hocban-search-count">Từ khóa <span class="hocban-highlight">%s</span> xuất hiện <strong>%s</strong> lần</p>',esc_html($s),number_format_i18n($count));
}
}
add_action('generate_after_entry_title','hocban_display_keyword_count');
add_action('wp_enqueue_scripts',function():void{
if(!is_search())return;
$css='.hocban-search-count{margin:12px 0 18px;font-size:15px;color:#222;font-weight:500;line-height:1.5;}.hocban-highlight{background:#fff000;color:#000;padding:3px 10px;border-radius:6px;font-weight:900;box-shadow:0 2px 6px rgba(0,0,0,0.25);display:inline-block;}.hocban-search-count strong{color:#d00;font-size:18px;font-weight:900;}';
wp_add_inline_style('generate-style',$css);
},99);
//HẾT CODE CẢI THIỆN TÌM KIẾM MẶC ĐỊNH