Question

我正在试图弄清楚如何列出公司的CATEGORY和BRAND，其布局看起来与此类似：

COMPANY 1

类别1：
品牌X
品牌Y
品牌Z
第2类品牌A
品牌B
品牌C
第3类品牌A
品牌X

我对PHP + MySQL不太熟悉，无法找到合适的SEARCH和PHP输出来实现这一目标。

我的表与此类似：

COMPANY   | CATEGORY   | BRAND    
--------------------------------
Company 1 | Category 2 | Brand A  
Company 1 | Category 2 | Brand B  
Company 1 | Category 2 | Brand C  
Company 1 | Category 1 | Brand X  
Company 1 | Category 1 | Brand Y  
Company 1 | Category 1 | Brand Z  
Company 1 | Category 3 | Brand A  
Company 1 | Category 3 | Brand X

Answer 1

<?php
$result = mysql_query("
  SELECT
    *
  FROM
    some_table
  ORDER BY
    company,
    category,
    brand
") 
or trigger_error('Query failed in '. __FILE__ .
   ' on line '. __LINE__ .'. '. mysql_error(), E_USER_ERROR);
if (mysql_num_rows($result)) {
  $companies = array();
  while ($row = mysql_fetch_assoc($result)) {
    $companies[$row['company']][$row['category']][] = $row['brand'];
  }

  foreach ($companies AS $company => $categories) {
    echo '<h2>'. htmlentities($company, ENT_COMPAT, 'UTF-8') .'</h2>';
    echo '<ul>';
    foreach ($categories AS $category => $brands) {
      echo '<li>'. htmlentities($category, ENT_COMPAT, 'UTF-8');
      foreach ($brands AS $brand) {
        echo '<br><em>'. htmlentities($brand, ENT_COMPAT, 'UTF-8') .'</em>';
      }
      echo '<br>&nbsp;</li>';
    }
    echo '</ul>';
  }
}

jsbin

Answer 2

只需获取所有内容并将其放入php中的哈希值，即

行

$rs = mysql_query("Select * from myTable");
$results = array();
while($row = mysql_fetch_assoc($rs)) {
    $results[$row['COMPANY']][$row['CATEGORY']][] = $row['BRAND'];
}

$results将包含类似

的数据结构

array(
    'Company 1' => array(
        'Category 1' => array('Brand X', 'Brand Y')
... etc
)

尝试var_dump($results)让它更有意义

PHP MySQL显示按公共字段分组的多行

2 个答案: