dongpu1315 2018-05-22 07:27
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从php中的多维数组中删除相关元素

I have an array of image data like this:

[other-image] => Array
        (
            [img] => Array
                (
                    [0] => 1526973657.jpg
                    [1] => 1526973661.jpg
                    [2] => 1526973665.jpg
                )

            [path] => Array
                (
                    [0] => ../post-upload/1/
                    [1] => ../post-upload/1/
                    [2] => ../post-upload/1/
                )

            [type] => Array
                (
                    [0] => 1
                    [1] => 1
                    [2] => 1
                )

            [thumb] => Array
                (
                    [0] => thumb_1526973661.jpg
                    [1] => thumb_1526973665.jpg
                    [2] => thumb_1526973668.jpg
                )

        )

Now I want to delete an image and it's all related data from sub arrays. (path, type, thumb data)

This is how I tried it in php:

  $delkey = '1526973657.jpg';
  if(in_array($delkey, $_SESSION['other-image']['img'])){
      $imgkey = array_search($delkey, $_SESSION['other-image']['img']);
      if($imgkey) unset($_SESSION['other-image']['img'][$imgkey]);
  }

But problem is I can't delete related data from other arrays. Can anybody tell me how to do this? Thank you.

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3条回答 默认 最新

  • douyu0725 2018-05-22 07:46
    关注

    You should use !==false after array_search() because it may return first index i.e. 0 in some cases, so your condition will not executed. And regarding delete related data from other arrays, you have to unset other data related to that key.

    if($imgkey!==false){
            unset($_SESSION['other-image']['img'][$imgkey]);
            unset($_SESSION['other-image']['path'][$imgkey]);
            unset($_SESSION['other-image']['type'][$imgkey]);
            unset($_SESSION['other-image']['thumb'][$imgkey]);
        }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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