dooo61733 2019-07-21 18:27
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如何通过HTML表单发送PHP数组(使用输入标记)

I would like to send an array in the input form element.

My array:

Array( [0] => 55 [1] => 1 [2] => 4 )

HTML <input> tag:

<input type="hidden" name="category" value="'.$category.'" />

This is the URL my code resulted in:

http://localhost/search?&category%5B%5D=55&category%5B%5D=1&category%5B%5D=4

But I also get this PHP Notice:

PHP Notice: Array to string conversion

How do I send an array via HTML form correctly?

============================

I found this solution:

foreach ($category as $item) {
    echo '<input type="hidden" name="categories[]" value="'.$item.'" />';                       
}

Prepare your array $category. Example:

    echo '<div align="center">  
    <form method="GET" action="/search" />                      
    <input type="hidden" name="search" value="'.$search.'" />'; 

    foreach ($category as $item){

    echo '<input type="hidden" name="categories[]" value="'.$item.'" />'; 

    } 

    echo '<input type="submit">        
    </form>
    </div>';

And get:

if(isset($_GET['categories'])) {

$categories = $_GET['categories'];                    

}
  • 写回答

1条回答 默认 最新

  • duanlan4801 2019-07-21 21:36
    关注

    The easiest way to do that is to convert your categories array to JSON and back.

    echo '<input type="hidden" name="category" value="' . json_encode($category) . '" />';
    

    ... and when you send your form, parse the JSON back to the array:

    $category = json_decode($_GET["category"]);
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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