PHP multidimensional arrays are merged based on key values.

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

There are multiple multi-dimensional arrays of the same format, and I want to merge them into the following effect based on the value of time

Please tell me how to solve it?

Reply content:

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

array (size=15)
0 =>

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

1 =>

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

2 =>

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

3 =>

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

4 =>

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

There are multiple multi-dimensional arrays of the same format, and I want to merge them into the following effect based on the value of time

Please tell me how to solve it?

If your arrays have been sorted by time and have the same length.

<code class="php">$new_arr = [];
foreach ($arr as $key=>$value) {
    $new_arr[$key] = [
        'time' => $arr[$key]['time'],
        'frequency' => $arr[$key]['frequency'],
        'other' => $arr2[$key]['other']
    ];
}</code>