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@ 2019-06-12T11:57:45Z

<?php
$array1 = Array
(
    0 => Array
        (
            'ID' => 101,
            'Code' => 1075,
            'Date' => '2012-03-03 17:13:12.433'
        ),

    1 => Array
        (
            'ID' => 103,
            'Code' => 175,
            'Date' => '2012-09-05 20:30:02.217'
        ),

    2 => Array
        (
            'ID' => 109,
            'Code' => 178,
            'Date' => '2012-07-05 20:30:02.217'
        )

);

$array2 = Array
(
    0 => Array
        (
            'Amount' => 1234,
            'ID' => 101
        ),

    1 => Array
        (
            'Amount' => 1342,
            'ID' => 103
        ),

    2 => Array
        (
            'Amount' => 0,
            'ID' => 0
        )

);

$arr2 = array_column($array2, "ID");

$finalArray = array();
foreach($array1 as $arr){
    $key = array_search($arr['ID'], $arr2);
	if($key ===false){
		$key = array_search(0, $arr2);
	}
	unset($array2[$key]['ID']);
	$finalArray[] = 	array_merge($arr,$array2[$key]);
}

print_r($finalArray);

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: Array ( [0] => Array ( [ID] => 101 [Code] => 1075 [Date] => 2012-03-03 17:13:12.433 [Amount] => 1234 ) [1] => Array ( [ID] => 103 [Code] => 175 [Date] => 2012-09-05 20:30:02.217 [Amount] => 1342 ) [2] => Array ( [ID] => 109 [Code] => 178 [Date] => 2012-07-05 20:30:02.217 [Amount] => 0 ) )

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