如何通过特定的 my_id 对 php 中的多维数组进行排序

Question

这是我的数组代码示例，我需要在没有内置函数的情况下进行排序，我尝试了 2 个循环，但看起来我没有得到这个程序的正确输出，请检查并给我可能的解决方案，如果你有......

$my_array = array(
    '51171#2'  => array(
       'my_id'  => 51171,
       'variation_id' => 2,
    ),
    '143516#2' => array(
       'my_id'  => 143516,
       'variation_id' => 2,
    ),
    '396346#2' => array(
       'my_id'  => 396346,
       'variation_id' => 2,
    ),
    '143516#1' => array(
       'my_id'  => 143516,
       'variation_id' => 1,
    ),
    '396344#2' => array(
       'my_id'  => 396344,
       'variation_id' => 2,
    ),
    '396346#1' => array(
       'my_id'  => 396346,
       'variation_id' => 1,
    ),
    '396344#1' => array(
       'my_id'  => 396344,
       'variation_id' => 1,
    ),
  );

上面是我的示例数组，所以在这里我想按 my_id 排序，而不使用 php 内置函数。我想要这样的输出：-

$output_arr = array(
  '143516#2' => array(
     'my_id'  => 143516,
     'variation_id' => 2,
  ),
  '143516#1' => array(
     'my_id'  => 143516,
     'variation_id' => 1,
  ),
  '396344#2' => array(
     'my_id'  => 396344,
     'variation_id' => 2,
  ),
  '396344#1' => array(
     'my_id'  => 396344,
     'variation_id' => 1,
  ),
  '396346#2' => array(
     'my_id'  => 396346,
     'variation_id' => 2,
  ),
  '396346#1' => array(
     'my_id'  => 396346,
     'variation_id' => 1,
  ),
  '51171#2'  => array(
     'my_id'  => 51171,
     'variation_id' => 2,
  ),
);

所以我尝试代码：-

  $result = [];
foreach($my_array as $key => $source){   
    foreach($my_array as $key1 => $source1){
        if(($source['my_id'] < $source1['my_id']))
        {        
              $result[$key1]= $source1;      
        }
    }
}
echo '<pre>';
print_r($result);

输出：-

Array
(
    [143516#2] => Array
        (
            [my_id] => 143516
            [variation_id] => 2
        )

    [396346#2] => Array
        (
            [my_id] => 396346
            [variation_id] => 2
        )

    [143516#1] => Array
        (
            [my_id] => 143516
            [variation_id] => 1
        )

    [396344#2] => Array
        (
            [my_id] => 396344
            [variation_id] => 2
        )

    [396346#1] => Array
        (
            [my_id] => 396346
            [variation_id] => 1
        )

    [396344#1] => Array
        (
            [my_id] => 396344
            [variation_id] => 1
        )
)

但这不是正确的输出，请帮我解决这个问题。