php。 2维数组转换成一维

Question

我已经阵列命名$result_for_json_all

Array 
(
[0] => Array 
    (
    ) 

[1] => Array 
    (
     [0] => Array 
      (
       [CurrencyAbbreviation] => AUD 
       [DateOfCurrencyRate] => 2012-12-11 
       [NumberOfInputRow] => 1 
       [FinalCurrencyRate] => 0.571 
      ) 

    ) 

[2] => Array 
    (
     [0] => Array 
      (
       [CurrencyAbbreviation] => CAD 
       [DateOfCurrencyRate] => 2013-12-22 
       [NumberOfInputRow] => 4 
       [FinalCurrencyRate] => 0.48 
      ) 

     [1] => Array 
      (
       [NumberOfInputRow] => 2 
       [FinalCurrencyRate] => 
      ) 

     [2] => Array 
      (
       [NumberOfInputRow] => 3 
       [FinalCurrencyRate] => 
      ) 

    ) 

) 

要在此基础上https://stackoverflow.com/a/9416851/2118559创建的代码

function flatten($result_for_json_all) { 
$arr = array(); 
foreach($result_for_json_all as $k => $v) { 
    if(is_array($v)) { 
     $arr = array_merge($arr, flatten($v, $k)); 
    } 
    else{ 
     $arr[$k] = $v; 
    } 
} 
return $arr; 
} 

echo '<pre>'; 
print_r(flatten($result_for_json_all)); 
echo 'result_for_json_all<pre>'; 

得到

Array 
(
[0] => Array 
      (
       [CurrencyAbbreviation] => AUD 
       [DateOfCurrencyRate] => 2012-12-11 
       [NumberOfInputRow] => 1 
       [FinalCurrencyRate] => 0.571 
      ) 

[1] => Array 
      (
       [CurrencyAbbreviation] => CAD 
       [DateOfCurrencyRate] => 2013-12-22 
       [NumberOfInputRow] => 4 
       [FinalCurrencyRate] => 0.48 
      ) 

[2] => Array 
      (
       [NumberOfInputRow] => 2 
       [FinalCurrencyRate] => 
      ) 

[3] => Array 
      (
       [NumberOfInputRow] => 3 
       [FinalCurrencyRate] => 
      ) 


) 

但得到

Array 
(
[CurrencyAbbreviation] => AUD 
[DateOfCurrencyRate] => 2013-12-22 
[NumberOfInputRow] => 3 
[FinalCurrencyRate] => 
) 

请，建议什么需要纠正以获取必要的结果

Answer 1

<?php 
    $result = array(); 

    foreach ($result_for_json_all as $outer_elt) { 
     foreach ($outer_elt as $inner_elt) { 
      $result[] = $inner_elt; 
     } 
    } 

    var_dump($result); 
?> 

Answer 2

嘿尝试这样的事：

比使用较短的变量名

<?php 
// The original data 
$org = Array(
    0 => Array(), 
    1 => Array(
    0 => Array("CurrencyAbbreviation" => "AUD") 
), 
    2 => Array(
    0 => Array("CurrencyAbbreviation" => "CAD", "DateOfCurrencyRate" => "2013-12-22"), 
    1 => Array("NumberOfInputRow" => 2) 
) 
); 
print_r($org); 

// The new array transformed 
$arr = Array(); 
foreach ($org as $v1){ 
    foreach($v1 as $v2){ 
    $arr[] = $v2; 
    } 
} 
print_r($arr); 
?>