PHP从一个阵列

Question

初始阵列

Array 
(
[0] => Array 
    (
     [RecordDay] => 23 
     [Amount] => 1.50 
     [DocumentName] => bank stmt 
     [DocumentNumber] => 1 
    ) 
[1] => Array 
    (
     [RecordDay] => 17 
     [Amount] => 0.21 
     [DocumentName] => invoice 
     [DocumentNumber] => 2 
    ) 
[2] => Array 
    (
     [RecordDay] => 17 
     [Amount] => 1.00 
     [DocumentName] => invoice 
     [DocumentNumber] => 2 
    ) 
) 

从所有的子阵列，其中[RecordDay]，[DocumentName]和[DocumentNumber]是相同的要创建新的数组创建多个阵列。

对于键[1]和[2][RecordDay]，[DocumentName]和[DocumentNumber]是相同的。

因此，作为一个结果，要得到这个

Array 
(
[0] => Array 
    (
     [RecordDay] => 23 
     [Amount] => 1.50 
     [DocumentName] => bank stmt 
     [DocumentNumber] => 1 
    ) 
) 

Array 
(
[0] => Array 
    (
     [RecordDay] => 17 
     [Amount] => 0.21 
     [DocumentName] => invoice 
     [DocumentNumber] => 2 
    ) 

[1] => Array 
    (
     [RecordDay] => 17 
     [Amount] => 1.00 
     [DocumentName] => invoice 
     [DocumentNumber] => 2 
    ) 
) 

但不知道该怎么做

了这样

$first_loop = true; 

foreach($initial_array as $key => $one_dimensional_array){ 

    if($first_loop == true){ 
    $new_array1['RecordDay'][] = $one_dimensional_array['RecordDay']; 
    $first_loop = false; 
    } 

    if($first_loop == false){ 

    if(in_array($one_dimensional_array['RecordDay'], $new_array1['RecordDay'])){ 
    $new_array1['RecordDay'][] = $one_dimensional_array['RecordDay']; 
    } 
    else{ 
    $new_array2['RecordDay'][] = $one_dimensional_array['RecordDay']; 
    } 

    }//if($first_loop == false){ 

}//foreach($initial_array as $key => $one_dimensional_array){ 

了

Array 
(
[RecordDay] => Array 
    (
     [0] => 23 
     [1] => 23 
    ) 

[DocumentName] => Array 
    (
     [0] => bank stmt 
     [1] => bank stmt 
    ) 

[DocumentNumber] => Array 
    (
     [0] => 1 
     [1] => 1 
    ) 

) 

Array 
(
[RecordDay] => Array 
    (
     [0] => 17 
     [1] => 17 
    ) 

[DocumentName] => Array 
    (
     [0] => invoice 
     [1] => invoice 
    ) 

[DocumentNumber] => Array 
    (
     [0] => 2 
     [1] => 2 
    ) 

) 

但这不是什么想要的。任何想法需要改变？

Answer 1

尝试这样，

$temp_array=array(); 
foreach($initial_array as $arr){ 
    $temp_array[$arr['RecordDay'].",".$arr['DocumentNumber'].",".$arr['DocumentName']] []=$arr; //here it will **ADD** a new array in a key 'RecordDay,DocumentNumber,DocumentName' format. e.g. [23,1,'bank stmt'] , [17,2,'invoice']. 


} 

现在你需要处理$temp_array得到各个阵列

foreach ($temp_array as $separate_array){ 
    print_r($separate_array); //process your new array here one by one. 
} 

工作DEMO