如何通过HTML表单发送PHP数组（使用输入标记）

问题描述：

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'];                    

}

我想在输入表单元素中发送一个数组。 p>

我的数组： p>

 数组（[0] =＆gt; 55 [1] =＆gt; 1 [2] =＆gt; 4）
  code>  pre  > 
 
  HTML ＆lt; input＆gt;  code>标记： p> 
 
 
 ＆lt; input type =“hidden”name =“category”value  =“'。$ category。'”/＆gt; 
  code>  pre> 
 
 这是我的代码产生的网址： p> 
 
 
  HTTP：//本地主机/搜索＆安培;类别％5B％5D = 55＆安培;类别％5B％5D = 1＆安培;类别％5B％5D = 4 
 代码>  PRE> 
 
 但我也得到了这个PHP注意事项： p> 
 
  
  PHP注意：数组转换为字符串 p> 
  blockquote> 
 
 
 如何正确地通过HTML表单发送数组？ p> 
 
 
 ============================   p> 
 
 
 我找到了这个解决方案： strong>  p> 
 
 
  foreach（$ category as $ item）{
 echo'  ＆lt; input type =“hidden”name =“categories []”value =“'。$ item。'”/＆gt;';  
} 
  code>  pre> 
 
 准备阵列 $ category  code>。 示例： p> 
 
 
  echo'＆lt; div align =“center”＆gt;  
＆lt; form method =“GET”action =“/ search”/＆gt;  
＆lt; input type =“hidden”name =“search”value =“'。$ search。'”/＆gt;';  
 
 foreach（$ category as $ item）{
 
 echo'＆lt; input type =“hidden”name =“categories []”value =“'。$ item。'”/＆gt;';  
 
} 
 
 echo'＆lt; input type =“submit”＆gt;  
＆lt; / form＆gt; 
＆lt; / div＆gt;'; 
  code>  pre> 
 
 获取： p> 
 
 
   if（isset（$ _ GET ['categories']））{
 
 $ categories = $ _GET ['categories'];  
 
} 
  code>  pre> 
  div>

答

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"]);

如何通过HTML表单发送PHP数组（使用输入标记）

相关推荐