array_multisort 排序

$a1=array("Pluto","Fido","Missy");
array_multisort($a1,SORT_ASC);
print_r($a1);

Array
(
    [0] => Fido
    [1] => Missy
    [2] => Pluto
)

$a1=array(1,30,15,7,25);
$a2=array(4,30,20,41,66);
$num=array_merge($a1,$a2);
array_multisort($num,SORT_DESC,SORT_NUMERIC);
print_r($num);

Array
(
    [0] => 66
    [1] => 41
    [2] => 30
    [3] => 30
    [4] => 25
    [5] => 20
    [6] => 15
    [7] => 7
    [8] => 4
    [9] => 1
)

$arr = [
    [
        'id'=>5,
        'name'=>'55'
    ],
    [
        'id'=>3,
        'name'=>'33'
    ],
    [
        'id'=>1,
        'name'=>'11'
    ],
    [
        'id'=>4,
        'name'=>'44'
    ],
    [
        'id'=>2,
        'name'=>'22'
    ]
];
$sort = [
    ['id' => 1],
    ['id' => 2],
    ['id' => 3],
    ['id' => 4],
    ['id' => 5]
];
array_multisort($sort, SORT_ASC,SORT_NUMERIC, $arr);
print_r($arr);

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => 11
        )
 
    [1] => Array
        (
            [id] => 2
            [name] => 22
        )
 
    [2] => Array
        (
            [id] => 3
            [name] => 33
        )
 
    [3] => Array
        (
            [id] => 4
            [name] => 44
        )
 
    [4] => Array
        (
            [id] => 5
            [name] => 55
        )
 
)

//二位数组根据多个字段排序
foreach ($order_data as $key => $row ){
    $inv_total_amount_order[$key] = $row ['inv_total_amount'];
    $last_time_order[$key] = $row ['last_time'];
    $persion_year_inv_total_order[$key] = $row['persion_year_inv_total'];
    $user_reg_time_order[$key] = $row ['user_reg_time'];
}
array_multisort($persion_year_inv_total_order,SORT_DESC,$last_time_order, SORT_ASC,$inv_total_amount_order, SORT_DESC, $user_reg_time_order,SORT_ASC,$order_data);