PHP merge two arrays on the same key AND value

Question

I have two arrays. And I want to merge them on the same key AND value. If they have the same ur_user_id then they are merged. array2 only provides

Answer 1

Try this:

 1,'ur_fname'=>'PerA','ur_lname'=>'SonA'),
        array('ur_user_id'=> 2,'ur_fname'=>'PerB','ur_lname'=>'SonB'),
        array('ur_user_id'=> 3,'ur_fname'=>'PerC','ur_lname'=>'SonC'),
    );
$array2 = 
    array(
        array('ur_user_id' => 5,'ur_code' => 'EE','ur_user_role' => 'testE'),
        array('ur_user_id' => 4,'ur_code' => 'DD','ur_user_role' => 'testD'),
        array('ur_user_id' => 6,'ur_code' => 'FF','ur_user_role' => 'testF'),
        array('ur_user_id' => 3,'ur_code' => 'CC','ur_user_role' => 'testC'),
        array('ur_user_id' => 1,'ur_code' => 'AA','ur_user_role' => 'testA'),
        array('ur_user_id' => 2,'ur_code' => 'BB','ur_user_role' => 'testB'),
    );


$result = array();

$userIdsFromArray1 = array_column($array1, 'ur_user_id');


foreach($array2 as $subarray)
{
    if(in_array($subarray['ur_user_id'], $userIdsFromArray1))
    {
        $result[] = array_merge($subarray, getDataFromArray1ByUserId($array1, $subarray['ur_user_id']));
    }
}


function getDataFromArray1ByUserId($array1, $userId)
{
    foreach($array1 as $key => $data)
    {
        if($data['ur_user_id'] == $userId)
            return $data;
    }

    return array();
}

 usort($result,function($a,$b){
    return strnatcmp($a['ur_user_id'],$b['ur_user_id']);
});

print_r($result);

Working example : CLICK!