我正在使用此代码创建我的 PayPal 订阅。但它无法识别我的任何输入字段。你能解释一下为什么不吗?
<form method="POST" name="gateway_form" action="https://www.sandbox.paypal.com/cgi-bin/webscr">
<input type="hidden" name="rm" value="2"/>
<input type="hidden" name="cmd" value="_xclick"/>
<input type="hidden" name="business" value="EMAIL"/>
<input type="hidden" name="currency_code" value="CAD"/>
<input type="hidden" name="return" value="http://www.URL.com/payment/paypal_success.php"/>
<input type="hidden" name="cancel_return" value="http://www.URL.com/payment/paypal_failure.php"/>
<input type="hidden" name="notify_url" value="http://www.URL.com/payment/paypal_ipn.php"/>
<input type="hidden" name="item_name" value="Monthly Subscription"/>
<input type="hidden" name="discount_amount" value="0.00"/>
<input type="hidden" name="a3" value="49.00"/>
<input type="hidden" name="t3" value="M"/>
<input type="hidden" name="p3" value="30"/>
<input type="hidden" name="src" value="1"/>
<input type="hidden" name="sra" value="1"/>
<input type="hidden" name="srt" value="1"/>
<input type="submit" value="Click Here"></p>
</form>