php - 从 MySQL 表构建 PHP 数组

Question

我想从多行创建数组。在我的表中，我有 Year 字段、用于计算学生人数的 regd 字段和 Class 字段。我想输出如下数据。

$data = array( 
              '2012' => array(
                             'KG_I' => 87,
                             'KG_II' => 80,
                             'I' => 90,
                             'II' => 120,
                             'III' => 100,
                             'IV' => 110,
                             'V' => 98,
             ),
             '2013' => array(
                             'KG_I' => 82,
                             'KG_II' => 84,
                             'I' => 92,
                             'II' => 110,
                             'III' => 120,
                             'IV' => 108,
                             'V' => 90,
             ),
            '2014' => array(
                            'KG_I' => 90,
                            'KG_II' => 83,
                            'I' => 95,
                            'II' => 110,
                            'III' => 120,
                            'IV' => 81,
                            'V' => 95,
            ),
  );

我的尝试是这样的:

$std=array();
$hms="SELECT COUNT(DISTINCT regd) as stdNum, Class, Year FROM 
      student GROUP by Class";
$quar=mysql_query($hms);
$myarray = array();
while($row = mysql_fetch_array($quar)){
    $myarray[$row['Class']] = $row['stdNum'];
}

我不知道如何输出 Year 数组。

Answer 1

让我们试试这个:

while($row = mysql_fetch_array($quar)){
    $myarray[$row['Year']][$row['Class']] = $row['stdNum'];
}

享受吧:)