我正在開發一個貝寶按鈕，我正在嘗試弄清楚如何將變量傳遞給貝寶以將它們彈回到我的處理程序。目前我的貝寶按鈕代碼中有以下內容。<input name="custom" type="hidden" value='{"firstName" : "Lucas","lastName" : "Harvmaster","email" : "[email protected]","companyName" : "Matchbox","password" : "123Cupcakes"}'>這可行，但不是特別動態。我不確定如何將該數據作為我從用戶收集的變量而不是硬編碼傳遞。我不認為我可以在表單中創建可填寫的點，因為它需要添加在一起并格式化以作為 paypal 的自定義變量點發送。編輯：我看到有些人做了類似的事情，但我不太能讓它發揮作用。<?php    $firstName = "Lucas";    $lastName = "Harvmaster";    $email = "[email protected]";    $companyName = "Matchbox";    $password = "123Cupcakes";?><form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">    <input name="custom" type="hidden" value='{"firstName" : <?php echo $firstName ?>,"lastName" : "Harvmaster","email" : "[email protected]","companyName" : "Matchbox","password" : "123Cupcakes"}'>    <input type="hidden" name="cmd" value="_s-xclick">    <input type="hidden" name="hosted_button_id" value="89924XE27QRNY">    <input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">    <img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1"></form>