如何从多维数组中动态获取信息

Question

我想收集每个membership_name值并显示它。我尝试了一些foreach循环，但他们总是提醒我的drupal安装为无效的foreach（）命令。

这是print_r（$ myMemberships）;

Array 
(
[1] => Array 
    (
     [3] => Array 
      (
       [id] => 3 
       [membership_id] => 3 
       [contact_id] => 1 
       [membership_contact_id] => 1 
       [membership_type_id] => 1 
       [join_date] => 2011-08-23 
       [start_date] => 2011-08-23 
       [membership_start_date] => 2011-08-23 
       [status_id] => 2 
       [is_override] => 1 
       [is_test] => 0 
       [member_is_test] => 0 
       [is_pay_later] => 0 
       [member_is_pay_later] => 0 
       [membership_name] => Orientation 
       [relationship_name] => Volunteer for 
      ) 

     [4] => Array 
      (
       [id] => 4 
       [membership_id] => 4 
       [contact_id] => 1 
       [membership_contact_id] => 1 
       [membership_type_id] => 2 
       [join_date] => 2011-08-23 
       [start_date] => 2011-08-23 
       [membership_start_date] => 2011-08-23 
       [status_id] => 2 
       [is_override] => 1 
       [is_test] => 0 
       [member_is_test] => 0 
       [is_pay_later] => 0 
       [member_is_pay_later] => 0 
       [membership_name] => Field Production 
       [relationship_name] => Volunteer for 
      ) 

     [5] => Array 
      (
       [id] => 5 
       [membership_id] => 5 
       [contact_id] => 1 
       [membership_contact_id] => 1 
       [membership_type_id] => 3 
       [join_date] => 2011-08-23 
       [start_date] => 2011-08-23 
       [membership_start_date] => 2011-08-23 
       [status_id] => 2 
       [is_override] => 1 
       [is_test] => 0 
       [member_is_test] => 0 
       [is_pay_later] => 0 
       [member_is_pay_later] => 0 
       [membership_name] => Graphic Design 
       [relationship_name] => Volunteer for 
      ) 

    ) 

[record_count] => 7 
) 

此外，我想固定每个membership_name作为变量授予权限的用户，如：

<?php 
     if ($orientation) { 

     // execute code 

} else { 

     // otherwise execute 

} 

<?php 
     if ($fieldproduction) { 

     // execute code 

} else { 

     // otherwise execute 

} 

// etc... etc... 

这是我使用后，它调用，可能完全错误的东西：

foreach ($myMemberships as $myMembership) { 
    foreach ($myMembership as $value => $final) { 
     echo 'hello'; 
    } 
} 

Answer 1

如果这是你的数组，那么你需要寻找成员myMemberships[1]，所以你的代码应该是

foreach ($myMemberships[1] as $myMembership) { 
    foreach ($myMembership as $value => $final) { 
     // here you have membership properties 
    } 
} 

如果阵列是动态的，而不是你要检查这一点，所以你应该做的像这样

foreach ($myMemberships[1] as $myMembership) { 
    if (is_array($myMembership)) { 
     foreach ($myMembership as $value => $final) { 
      // here you have membership properties 
     } 
    } 
} 

Answer 2

这就是record_count项目在数组底部导致问题。您的外部循环将为内部循环分配7至$myMemberShip。然后你试着对这个7做一个foreach - 因为它不是一个数组，所以你会得到警告。