PHP多维数组根据键值合并。

Question

array (size=15)
0 =>

array (size=2)
  'time' => string '2016-04-14' (length=10)
  'frequency' => string '3' (length=1)

1 =>

array (size=2)
  'time' => string '2016-04-22' (length=10)
  'frequency' => string '5' (length=1)

2 =>

array (size=2)
  'time' => string '2016-04-23' (length=10)
  'frequency' => string '1' (length=1)

3 =>

array (size=2)
  'time' => string '2016-04-24' (length=10)
  'frequency' => string '2' (length=1)

4 =>

array (size=2)
  'time' => string '2016-04-25' (length=10)
  'frequency' => string '16' (length=2)

array (size=15)
0 =>

array (size=2)
  'time' => string '2016-04-14' (length=10)
  'amount' => string '18.00' (length=5)

1 =>

array (size=2)
  'time' => string '2016-04-22' (length=10)
  'amount' => string '54.00' (length=5)

2 =>

array (size=2)
  'time' => string '2016-04-23' (length=10)
  'amount' => string '6.00' (length=4)

3 =>

array (size=2)
  'time' => string '2016-04-24' (length=10)
  'amount' => string '12.00' (length=5)

4 =>

array (size=2)
  'time' => string '2016-04-25' (length=10)
  'amount' => string '48.00' (length=5)
  
  
  

array (size=15)
0 =>

array (size=2)
  'time' => string '2016-04-14' (length=10)
  'number' => string '1' (length=1)

1 =>

array (size=2)
  'time' => string '2016-04-22' (length=10)
  'number' => string '5' (length=1)

2 =>

array (size=2)
  'time' => string '2016-04-23' (length=10)
  'number' => string '1' (length=1)

3 =>

array (size=2)
  'time' => string '2016-04-24' (length=10)
  'number' => string '1' (length=1)

4 =>

array (size=2)
  'time' => string '2016-04-25' (length=10)
  'number' => string '2' (length=1)
  

有多个同样格式的多维数组,想根据time的值来进行合并成以下效果

请教各位大神该如何解决?

Answer 1

如果你的数组都已经按照time排好序, 并且长度相同的话.

$new_arr = [];
foreach ($arr as $key=>$value) {
    $new_arr[$key] = [
        'time' => $arr[$key]['time'],
        'frequency' => $arr[$key]['frequency'],
        'other' => $arr2[$key]['other']
    ];
}