doufan6544 2017-03-29 05:11
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按定义的值列表排序对象数组[重复]

This question already has an answer here:

Ok, I am sure that this has already been answered somewhere and I apologise for posting such a fundamental question, but I can't seem to find the answer anywhere... I'm only just dipping my big toe into php for the first time and spend most of my time in Javascript, so be nice to me :-)

I have an array of objects that is of the structure:

[
  {
    title: 'one',
    type: 'cat'
  },
  {
    title: 'two',
    type: 'dog'
  },
  {
    title: 'three',
    type: 'snake'
  },
  {
    title: 'four',
    type: 'dog'
  }
]

And I'd like to order them in the order ['dog', 'snake', 'cat] so I get:

[
  {
    title: 'two',
    type: 'dog'
  }
  {
    title: 'four',
    type: 'dog'
  },
  {
    title: 'three',
    type: 'snake'
  },
  {
    title: 'one',
    type: 'cat'
  }
]

How do I do this?

</div>
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2条回答 默认 最新

  • doudang2537 2017-03-29 05:27
    关注

    PHP code demo

    <?php
    ini_set("display_errors", 1);
    $json ='[
      {
        "title": "one",
        "type": "cat"
      },
      {
        "title": "two",
        "type": "dog"
      },
      {
        "title": "three",
        "type": "snake"
      },
      {
        "title": "four",
        "type": "dog"
      }
    ]';
    $dataArray=json_decode($json,true);
    $sortFormat=['dog', 'snake', 'cat'];
    $result=array();
    while(count($dataArray)>0)
    {
        foreach($sortFormat as $object)
        {
            foreach($dataArray as $key => $objectData)
            {
                if($objectData["type"]==$object)
                {
                    $result[]=$objectData;
                    unset($dataArray[$key]);
                }
            }
        }
    }
    print_r($result);
    

    Output:

    Array
    (
        [0] => Array
            (
                [title] => two
                [type] => dog
            )
    
        [1] => Array
            (
                [title] => four
                [type] => dog
            )
    
        [2] => Array
            (
                [title] => three
                [type] => snake
            )
    
        [3] => Array
            (
                [title] => one
                [type] => cat
            )
    
    )
    
    评论

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