Question

我需要帮助比较一个将要分配到多维数组中的值，其中有几个值与最后指定的值一起提供。

首先，数组是这样的：

$schedule = array(
    0 => array(//day
        0 => array(//session 1
                0 => array( //room 405
                    0 => "5" //id from arr2 
                ),
                1 => array( //room 406
                    0 => "7"  
                ), 
                2 => array( //room 407
                    0 => ""   
                ),
                3 => array( //room 408
                    0 => ""  
                ) 
        )
)

$idAndNeighbour = array(
     0 => array(
         'id'=>5,
         'neighbour1' => 4,
         'neighbour5' => 22,     
     ),
     1 => array(
         'id'=>7,
         'neighbour1' => 9,
         'neighbour5' => 24,     
     ),
     2 => array(
         'id'=>9,
         'neighbour1' => 7,
         'neighbour5' => 23,     
     ),
     3 => array(
         'id'=>14,
         'neighbour1' => 8,
         'neighbour5' => 26,     
     )
)

要分配给$ schedule的下一个id是9，所以我需要获取最后分配的id，查看$ idAndNeighbour中哪个id与最后分配的id匹配，并将id 9与最后分配的id的邻居进行比较，如果9匹配任何最后分配的id的邻居然后跳过9然后下一个要分配的id是14。

我该如何解决这个问题？

注意：我不应该在$ idAndNeighbour中进行比较，因为它会不断跳过id 9和其他与邻居值匹配的id

Answer 1

如果您询问如何查找叶子节点中是否有9，则需要array_walk_recursive。

以下是您的数据示例：

$schedule = array(
    0 => array(//day
        0 => array(//session 1
                0 => array( //room 405
                    0 => "5" //id from arr2 
                ),
                1 => array( //room 406
                    0 => "7"  
                ), 
                2 => array( //room 407
                    0 => ""   
                ),
                3 => array( //room 408
                    0 => ""  
                ) 
        )
    )
);

$allids = array();

array_walk_recursive($schedule, function ($value, $key) use (&$allids) {
                                    if ($value) $allids[] = $value;
                                });
var_export($allids);

if (array_search(9, $allids) === false) {
    echo "\nIt's not there.\n";
} else echo "\nIt's there.\n";

这会产生：

array (
  0 => '5',
  1 => '7',
)
It's not there.

PHP条件多维值比较

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