数组发布到CodeIgniter的JSON_decode问题 [英] JSON_decode problem with array posted to CodeIgniter

问题描述

我确定我犯了一个简单的错误……但根本找不到它.

I am certain I am making a simple mistake... but simply can't find it.

最终我从一个Android应用程序发布了一个JSON数组(该部分正在工作)，但是暂时我只是在两个PHP页面之间进行测试(1:使用基本形式测试PHP页面，而2:CodeIgniter final目的地)这是我所拥有的:

Ultimately I am posting a JSON array from an Android app (that part is working), but for the time being I am simply testing between two PHP pages (1: test PHP page with basic form, and 2: the CodeIgniter final destination) Here is what I have:

在表单页面上:

<form action="bambooinvoice/index.php/api2/newinvoice/4/0/0" method="post">
    <?php 
        $array = array("items"=>array(
            "taxable"=>1, 
            "quantity"=>1, 
            "amount"=>123.99, 
            "work_description"=>"this is a test"));
        $json = json_encode($array);
    ?>
    <input type="hidden" name=json value=<?php $json ?> />
    <input type="submit" name="btnSendForm" value="Send" />
</form>

这创建了(对我来说看起来不错):

This creates (which looks good to me):

{"items":{"taxable":1,"Quantity":1,"amount":123.99,"work_description":"this is a test"}}

在codeIgniter方面，我有:

On the codeIgniter side, I have:

$input = $this->input->post('json');
$items = json_decode($input, TRUE);

$amount = 0;
foreach ($items as $item) // In case there are multiple 'items'
{
    $taxable = (isset($item['taxable']) && $item['taxable'] == 1) ? 1 : 0;

    $invoice_items = array(
        'quantity' => $item['quantity'],
        'amount' => $item['amount'],
        'work_description' => $item['work_description'],
        'taxable' => $taxable
    );

    $this->_addInvoiceItem($invoice_items); //simply adding contents to DB
}

最后我收到错误消息:(我在所有调整中实际上都收到了许多错误，但这是我似乎无法撼动的错误)

In the end I receive the error: (i have received numerous errors actually in all my tweaking, but this is the one I can't seem to shake)

Message: Invalid argument supplied for foreach()

已编辑-纠正错字.

推荐答案

当表单发布名为json的隐藏值时，您正在使用$this->input->post('items').

You are using $this->input->post('items') when your form is posting a hidden value named json.

如果您var_dump($this->input->post('items'))，则应为FALSE或NULL.

改为在您的CI脚本中尝试以下操作:

Try this in your CI script instead:

$input = $this->input->post('json'); // not 'items'
$items = json_decode($input, TRUE);

// Rest of your code...

这应该可以解决该问题，但是您还需要确保正确发送json数据！ var_dump($_POST)应该向您展示它是否一次完成了您的脚本.

That should fix that problem, but you also need to make sure your json data is being sent correctly to begin with! var_dump($_POST) should show you if it's making it to your script in one piece.

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