Php 如果产品与类别关联，则返回类别的非常复杂的查询_Php_Mysql_Function_Loops

Php 如果产品与类别关联，则返回类别的非常复杂的查询

php mysql function loops

Php 如果产品与类别关联，则返回类别的非常复杂的查询,php,mysql,function,loops,Php,Mysql,Function,Loops,我有以下功能，仅当至少有1个产品与类别关联时，才返回带有产品类别的ul菜单。函数如下所示： function getProductCategorieshome() { $query = 'select id, category, title from products_categories where visible="1" and

我有以下功能，仅当至少有1个产品与类别关联时，才返回带有产品类别的ul菜单。函数如下所示：

function getProductCategorieshome() {

    $query = 'select id, 
                     category, 
                     title 
              from products_categories 
              where visible="1" and 
                    parent="0" 
              group by category 
              order by category ASC';

    $result = mysql_query($query) or 
                die('Mysql Error:'.mysql_error().'<br /> Query:'.$query);

    $num_rows = mysql_num_rows($result);

    if($num_rows){
        echo '<ul id="menu" style="list-style:none;">';
        $htm = '';

        for($i=0; $i<$num_rows; $i++) {
            $row = mysql_fetch_row($result);

            //sub category
            $query = 'select pc.id, 
                             category, 
                             pc.title, 
                             p.id, 
                             p.new 
                      from products_categories pc,
                           products_to_categories ptc, 
                           products p 
                      where visible="1" and 
                            parent="'.$row[0].'" and 
                            pc.id=ptc.category_id and 
                            p.id=ptc.product_id and 
                            p.new="1" and 
                            ( expire_date>now() or expire_date=0) 
                      group by category 
                      order by category ASC';

            $result1 = mysql_query($query) or 
                         die('Mysql Error:'.mysql_error().'<br /> Query:'.$query);

            $num_rows1 = mysql_num_rows($result1);

            $q = 'select pc.id, 
                         category, 
                         pc.title, 
                         p.id, 
                         p.new 
                  from products_categories pc, 
                       products_to_categories ptc, 
                       products p 
                  where pc.id="'.$row[0].'" and 
                        pc.id=ptc.category_id and 
                        p.id=ptc.product_id and 
                        p.new="1" and 
                        ( expire_date>now() or expire_date=0) 
                  group by category 
                  order by category ASC';

            $r = mysql_query($q) or 
                    die('Mysql Error:'.mysql_error().'<br /> Query:'.$q); 

            $num_rows2 = mysql_num_rows($r);

            if($num_rows1>0) {
                $sub_htm='';
                for($j=0; $j<$num_rows1; $j++){
                    $row1 = mysql_fetch_row($result1);
                    $sub_htm .= '<li style="list-style:none;text-align:left;">
                                 <a href="./shop/index.php?offers='.$row1[0].'" title="'.$row1[2].'">'.$row1[1].'</a></li>';
                }
                if(!empty($sub_htm)) {
                    $htm .= '<li style="list-style:none;text-align:left;">
                            <a href="./shop/index.php?offers='.$row[0].'" title="'.$row[2].'">'.$row[1].'</a><ul>'.$sub_htm.'</ul></li>';
                }
            } else {
                for($s=0; $s<$num_rows2; $s++){
                    $rr = mysql_fetch_row($r);
                    $htm .= '<li style="margin:0px;padding:0px;text-align:left;">
                    <a href = "./shop/index.php?offers='.$rr[0].'" title="'.$rr[2].'">'.$rr[1].'</a></li>';
                }
            }
        }

        echo $htm;
        echo '</ul>';
    }
}

函数getProductCategorieshome（）{ $query='选择id，类别标题从产品类别其中可见=“1”和 parent=“0” 按类别分组按类别ASC'排序； $result=mysql\u query（$query）或 die（'Mysql错误：'.Mysql_错误（）。
查询：'.$Query）； $num\u rows=mysql\u num\u rows（$result）；如果（$num_行）{ echo'

DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `treePath`(in category_id int)
BEGIN
DECLARE parent int;
DECLARE current int;
SET @parent := NULL;
SET @current := category_id;
CREATE TEMPORARY TABLE tree_path_tmp(id int);
-- TRUNCATE tree_path_tmp;
WHILE @current DO
    INSERT INTO tree_path_tmp SELECT @parent := parent_id FROM categories WHERE id = @current;
            SET @current := @parent;

END WHILE;
    SELECT * FROM tree_path_tmp;
END$$

DELIMITER ;

CALL treePath($categoryThatHasVisibleProducts_id);