Question

我有一个像

这样的数组

Array ( [0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
        [1] => Array ( [msg] => vvv 
                       [social] => 
                       [priority] => 2 ) 
        [2] => Array ( [msg] => hhh 
                       [social] => 
                       [priority] => 2 ) 
        [3] => Array ( [msg] => rrr 
                       [social] => jws 
                       [priority] => 2 ) 
        [4] => Array ( [msg] => hhhh. 
                       [social] => fff 
                       [priority] => 3 ) 
)

我需要明智地显示这个msg优先级。条件是msg将在每次页面加载时更改。我使用了shuffle()，但它不合适。

是否可以更改数组的序列？

Answer 1

将消息存储在/会话中，在每个负载上显示一个：

session_start();

if (empty($_SESSION['messages'])) {
    $_SESSION['messages'] = $messages;

    // sort by priority if necessary:
    // usort($_SESSION['messages'], function ($a, $b) { return $a['priority'] - $b['priority']; });
}

$message = array_shift($_SESSION['messages']);
echo $message['msg'];

要旋转数组（反馈给评论）：

$messages[] = array_shift($messages);

Answer 2

最后我所做的是：

Array ( [0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
[0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
[0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
[0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
[0] => Array ( [msg] => xyx 
                       [social] =>xxx 
                       [priority] => 1 ) 
        [1] => Array ( [msg] => vvv 
                       [social] => 
                       [priority] => 2 ) 
        [2] => Array ( [msg] => hhh 
                       [social] => 
                       [priority] => 2 ) 
        [3] => Array ( [msg] => rrr 
                       [social] => jws 
                       [priority] => 2 ) 
        [4] => Array ( [msg] => hhhh. 
                       [social] => fff 
                       [priority] => 3 ) 
)

之后的那个（）。。

根据优先级显示消息

2 个答案: