集团通过属性

Question

我很难按属性将一系列对象分组。我找不到一个很好的答案。可能是我很累；可能是我错过了这里的重要事物。 无论如何 - 我创建了一个员工班级持有员工的对象。包括姓名，电子邮件，电话和部门。 我想按部门将我的员工数组分组。因此，如果我打印出阵列，销售中的每个人都会分组在一起。

现在的外观：

 $employees = array();
     while ($loop->have_posts() ) : $loop->the_post();
    
    $data = array(
    'name' => get_post_meta(get_the_ID(), 'prefix_name', true),
    'email' => get_post_meta(get_the_ID(), 'prefix_mail', true),
    'phone' => get_post_meta(get_the_ID(), 'prefix_phone', true),
    'department' => get_post_meta(get_the_ID(), 'prefix_department', true)
    );
    array_push($employees, new Employee($data));
endwhile;

员工班：

class Employee
{

    public $name;
    public $email;
    public $phone;
    public $department;

    public function __construct(Array $params = array()) {
        if (count($params)) {
            foreach ($params as $key => $value) {
                $this->$key = $value;
            }
        }
    }
}

Answer 1

$employees

将需要成为一个关联数组，将各个部门作为密钥。

就像以下：

$employees = array();
while ($loop->have_posts() ) : $loop->the_post();

    $data = array(
      'name' => get_post_meta(get_the_ID(), 'prefix_name', true),
      'email' => get_post_meta(get_the_ID(), 'prefix_mail', true),
      'phone' => get_post_meta(get_the_ID(), 'prefix_phone', true),
      'department' => get_post_meta(get_the_ID(), 'prefix_department', true)
    );

    // Check if there is already an index for this department, or create it
    if(!isset($employees[$data['department']])) {
        $employees[$data['department']] = array();
    }

    // Assign the employee object to that key (department)
    $employees[$data['department']][] = new Employee($data));

endwhile;