如何在symfony中对卡片进行排序

Question

我是 symfony 的初学者，我想根据以下顺序（使用 SYMFONY 3）对 10 cards（随机给用户）进行排序：类别顺序：DIAMOND – HEART – SPADES – CLUB。值顺序：AS – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9 – 10 – JACK – QUEEN – KING。例如：我通过 JSON 文件恢复了用户的 10 张随机卡片：

{ 
   "cards":[ 
      { 
         "category":"DIAMOND",
         "value":"TEN"
      },
      { 
         "category":"CLUB",
         "value":"ACE"
      },
      { 
         "category":"DIAMOND",
         "value":"QUEEN"
      },
      { 
         "category":"SPADES",
         "value":"SEVEN"
      },
      { 
         "category":"DIAMOND",
         "value":"NINE"
      },
      { 
         "category":"HEART",
         "value":"QUEEN"
      },
      { 
         "category":"CLUB",
         "value":"TEN"
      },
      { 
         "category":"HEART",
         "value":"FIVE"
      },
      { 
         "category":"HEART",
         "value":"SEVEN"
      }
   ]
}

排序的牌变成：ACE CLUB /FIVE HEART / SIX CLUB / SEVEN HEART / SEVEN SPADES / NINE DIAMOND / TEN DAIMOND /TEN CLUB / QUEEN DIAMOND / QUEEN HEART 我不知道如何开始？

Answer 1

在这种情况下，您可以使用 usort() 然后应用您的逻辑。在这种情况下，我有两个类别和值数组，以及它们的顺序。在下方，您可以看到 usort 函数，它通过两个数组的索引比较值。你可以把函数变小，但我这样写是为了更好地理解：

<?php

$category_order = ["CLUB", "SPADES", "HEART", "DIAMOND"];
$value_order = ["ACE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN", "JACK", "QUEEN", "KING"];


$input = '{ 
"cards":[ 
    { 
        "category":"DIAMOND",
        "value":"TEN"
    },
    { 
        "category":"CLUB",
        "value":"ACE"
    },
    { 
        "category":"DIAMOND",
        "value":"QUEEN"
    },
    { 
        "category":"SPADES",
        "value":"SEVEN"
    },
    { 
        "category":"DIAMOND",
        "value":"NINE"
    },
    { 
        "category":"HEART",
        "value":"QUEEN"
    },
    { 
        "category":"CLUB",
        "value":"TEN"
    },
    { 
        "category":"HEART",
        "value":"FIVE"
    },
    { 
        "category":"HEART",
        "value":"SEVEN"
    }
]
}';


$input = json_decode($input, true);
$cards = $input["cards"];

usort($cards, function($a, $b) use ($category_order, $value_order) {
    if (array_search($a['category'], $category_order) > array_search($b['category'], $category_order)) {
        return 1;
    } elseif (array_search($a['category'], $category_order) == array_search($b['category'], $category_order)) {
        if(array_search($a['value'], $value_order) > array_search($b['value'], $value_order)) {
            return 1;
        } else {
            return -1;
        }
    } else {
        return -1;
    }
});

print_r($cards);

输出：

Array
(
    [0] => Array
        (
            [category] => CLUB
            [value] => ACE
        )

    [1] => Array
        (
            [category] => CLUB
            [value] => TEN
        )

    [2] => Array
        (
            [category] => SPADES
            [value] => SEVEN
        )

    [3] => Array
        (
            [category] => HEART
            [value] => FIVE
        )

    [4] => Array
        (
            [category] => HEART
            [value] => SEVEN
        )

    [5] => Array
        (
            [category] => HEART
            [value] => QUEEN
        )

    [6] => Array
        (
            [category] => DIAMOND
            [value] => NINE
        )

    [7] => Array
        (
            [category] => DIAMOND
            [value] => TEN
        )

    [8] => Array
        (
            [category] => DIAMOND
            [value] => QUEEN
        )

)

如何在symfony中对卡片进行排序

how to sort card in symfony

php

symfony

symfony-3.4