檢查多維數組中的重複結果

我有一個多維數組，我需要交叉檢查它是否有重複結果，如果它們重複，則使用重複結果刪除數組。我需要檢查3個密鑰是否有重複;號碼，出發和到達。這裏是一個示例陣列，其中第三個陣列是重複的，需要刪除：檢查多維數組中的重複結果

[Cars] => Array 
    (
     [0] => Array 
      (
       [cartype] => car1 
       [number] => 123 
       [craft] => 456 
       [departure] => GHY 
       [departtime] => 20:25 
       [arrival] => PUI 
       [arrivetime] => 22:50 
      ) 

     [1] => Array 
      (
       [cartype] => car2 
       [number] => 567 
       [craft] => 890 
       [departure] => LHY 
       [departtime] => 16:25 
       [arrival] => PGY 
       [arrivetime] => 23:50 
      ) 
     [2] => Array 
      (
       [cartype] => car2 
       [number] => 567 
       [craft] => 890 
       [departure] => LHY 
       [departtime] => 16:25 
       [arrival] => PGY 
       [arrivetime] => 23:50 
      ) 

    )

我真的很感謝一些幫助。

謝謝，

來源

2017-02-12 gcooke75

你必須檢查所有的數組元素，或者只是'number'？ – Barmar

您可以使用'serialize（）'將每個數組轉換爲一個字符串，使用'array_unique（）'移除重複項，然後使用'unserialize（）'將它們轉換回數組。 – Barmar

http://stackoverflow.com/questions/307674/how-to-remove-duplicate-values-from-a-multi-dimensional-array-in-php – bxN5

使用in_array功能和定製的溶液$hash_map容器（每個條目是由number，departure和arrival鍵的值）：

// $arr is your initial array 

// hash container 
$hash_map = []; 
foreach ($arr['Cars'] as $k => &$v) { 
    $hash = $v['number'] . $v['departure'] . $v['arrival']; 
    if (in_array($hash, $hash_map)) { 
     unset($arr['Cars'][$k]); // removing duplicate item  
    } else { 
     $hash_map[] = $hash;  
    } 
} 
unset($hash_map); 

print_r($arr);

來源

2017-02-12 18:49:44 RomanPerekhrest

嘗試，以便下列操作以完全刪除相同的重複子數組。

$arr = [['cartype' => 'car1','number' => '123','departure' => 'GHY','arrival' => 'PUI'], 
     ['cartype' => 'car2','number' => '567','departure' => 'LHY','arrival' => 'PGY'], 
     ['cartype' => 'car2','number' => '567','departure' => 'LHY','arrival' => 'PGY']]; 
$out = []; 
while (list($k, $v) = each($arr)) { 
if(!in_array($v,$out)) { 
    array_push($out,$v); 
} 
} 
print_r($out); 
// output 
Array 
(
    [0] => Array 
     (
      [cartype] => car1 
      [number] => 123 
      [departure] => GHY 
      [arrival] => PUI 
     ) 

    [1] => Array 
     (
      [cartype] => car2 
      [number] => 567 
      [departure] => LHY 
      [arrival] => PGY 
     ) 
)

檢查的例子here

編輯在你只需要使用檢查重複結果的情況下。

$arr = [['cartype' => 'car1','number' => '123','departure' => 'GHY','arrival' => 'PUI'], 
     ['cartype' => 'car2','number' => '567','departure' => 'LHY','arrival' => 'PGY'], 
     ['cartype' => 'car2','number' => '567','departure' => 'LHY','arrival' => 'PGY']]; 
$out = []; 
$checks = []; 
while (list($k, $v) = each($arr)) { 
if(!in_array([$v['number'],$v['departure'],$v['arrival']],$checks)) { 
    array_push($checks,[$v['number'],$v['departure'],$v['arrival']]); 
    array_push($out,$v); 
} 
} 
print_r($out); 
// output 
Array 
(
    [0] => Array 
     (
      [cartype] => car1 
      [number] => 123 
      [departure] => GHY 
      [arrival] => PUI 
     ) 

    [1] => Array 
     (
      [cartype] => car2 
      [number] => 567 
      [departure] => LHY 
      [arrival] => PGY 
     ) 
)

檢查新的例子here

來源

2017-02-12 18:51:18

檢查多維數組中的重複結果

回答

相關問題