Add two arrays and write one array to another.

Add two arrays and write an array to the known arrays a and B: // array a: array & nbsp; (& nbsp; 0 & nbsp; = & gt; & nbsp; array & nbsp; (& nbsp; & add two arrays to add one array to another
Known arrays a and B:

// Array:
Array (
0 =>
Array (
'Cust _ no' => '310f6 1VA5A ',
'Lotno' => '2x15 ',
'Part _ count' => '0 ',
),
1 =>
Array (
'Cust _ no' => '310f6 1VA5A ',
'Lotno' => '2z25 ',
'Part _ count' => '5 ',
),
)

// Array B:

Array (
0 =>
Array (
'Cust _ no' => '310f6 1VA5A ',
'Lotno' => '2z15 ',
'Part _ count' => '123 ',
),
1 =>
Array (
'Cust _ no' => '310f6 1VA5A ',
'Lotno' => '123 ',
'Part _ count' => '28 ',
),
)

Add the result of array B to array a, and accumulate the part_count corresponding to cust_no and lotno. The result is as follows:

array (
  0 => 
  array (
    'cust_no' => '310F6 1VA5A',
    'lotno' => '2X15',
    'part_count' => '0',
  ),
  1 => 
  array (
    'cust_no' => '310F6 1VA5A',
    'lotno' => '2Z15',
    'part_count' => '105',
  ),
  2 => 
  array (
    'cust_no' => '310F6 1VA5A',
    'lotno' => '3115',
    'part_count' => '28',
  ),
)

How can this be done? What array functions are required? Thank you! Share :??? Array? (???? 'Cust _ no '? =>? '310f6? 1VA5A ',???? 'Lotno '? =>? '2... 'data-pics = ''>
------ Solution --------------------

$t=array();
foreach(array_merge($a,$b) as $v){
     if(!isset($t[$v['cust_no'].'_'.$v['lotno']])){