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@ 2019-09-12T08:56:12Z

<?php

$majorEarning = array(
    array(
            'user_id' => 1,
            'booking_id' => 2,
            'price' => 30
        ),
    array(
            'user_id' => 2,
            'booking_id' => 1,
            'price' => 60
        ),
    array(
            'user_id' => 2,
            'booking_id' => 6,
            'price' => 10
        ),
    array(
            'user_id' => 1,
            'booking_id' => 4,
            'price' => 50
        )    
);
$r = [];
foreach($majorEarning as $v){
	array_key_exists($v['user_id'], $r)
	?
	($r[$v['user_id']]['booking_data'][] = ['booking'=>$v['booking_id'],'price'=>$v['price']])
	:
	($r[$v['user_id']] = ['user_id' => $v['user_id'], 'booking_data' => [['booking'=>$v['booking_id'], 'price'=>$v['price']]]]);
}
print_r($r);

Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: Array ( [1] => Array ( [user_id] => 1 [booking_data] => Array ( [0] => Array ( [booking] => 2 [price] => 30 ) [1] => Array ( [booking] => 4 [price] => 50 ) ) ) [2] => Array ( [user_id] => 2 [booking_data] => Array ( [0] => Array ( [booking] => 1 [price] => 60 ) [1] => Array ( [booking] => 6 [price] => 10 ) ) ) )

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