PHP搜索數組返回鍵

Question

我有一個看起來像這樣的數組，我想搜索一個saleref並讓它給我在PHP中的關鍵，我試過使用array_search，但我沒有得到任何回報。或者，我只是想顯示與salesref搜索相同的數組中的其他值，如果有更好的方法。

Array 
    (
     [xml] => Array 
      (
       [sale] => Array 
        (
         [0] => Array 
          (
           [saleref] => 305531 
           [saleline] => 1 
           [date] => 
           [team] => WH 
           [manifest] =>  0 
           [qty] =>  1 
           [order_status] => 
          ) 

         [141] => Array 
          (
           [saleref] => 306062 
           [saleline] => 1 
           [date] => 
           [team] => 
           [manifest] =>  0 
           [qty] =>  1 
           [order_status] => RECEIVED 
          ) 

         [1] => Array 
          (
           [saleref] => 306062 
           [saleline] => 2 
           [date] => 
           [team] => WH 
           [manifest] =>  0 
           [qty] =>  1 
           [order_status] => 
          ) 

Answer 1

<?php 
function searchSale($needle) 
{ 
    foreach ($data['xml']['sale'] as $id => $sale) 
    { 
     if ($sale->saleref == $needle) 
     { 
      return $id; 
     } 
    } 
    return null; 
} 
?> 

Answer 2

function findkey($val, &$array) 
{ 
    $keys=array(); 
    foreach ($array as $key=$try) { 
    if ($try===$val) { 
     $keys[]=$key; 
    } else if (is_array($try)) { 
     $contained=findkey($val, $try); 
     if (count($contained)) { 
      $keys[]=$contained; 
     } 
    } 
    } 
    return $keys; 
} 

C.