为什么我得到这个奇怪的JSON作为输出？

我的PHP函数来处理Ajax请求为什么我得到这个奇怪的JSON作为输出？

$nameMap = array('name' => 'Name', 'email' => 'Email Address', 'phone' => 'Phone Number', 'comments' => 'Comments'); 
// https://css-tricks.com/sending-nice-html-email-with-php/ 
$headers = "MIME-Version: 1.0\r\nContent-Type: text/html; charset=ISO-8859-1\r\n"; 
function contact () 
{ 
    global $nameMap, $headers; 
    $emailMsg = '<html><body><h3>Someone submitted a contact form ...</h3><table>'; 
    foreach ($_POST as $key => $value) if (array_key_exists($key, $nameMap)) $emailMsg .= '<tr><td><b>' . $nameMap[$key] . ':</b></td><td>' . $value . '</td></tr>'; 
    $emailMsg .= '</table></body></html>'; 
    if (mail("[email protected]","A Comment Was Submitted",$emailMsg,$headers)) 
    { 
     echo json_encode(array('succeeded' => true, 'msg' => 'Your comment was submitted successfully!')); 
    } 
    else 
    { 
     echo json_encode(array('succeeded' => false, 'msg' => 'There was a problem with the info you submitted.'));  
    } 
}

，我的JavaScript是

   $('.contact-form .contact-submit-btn').click(function(e){ 
        formdata = new FormData($(this).closest('.contact-form')[0]); 
        formdata.append('action', 'contact'); 
        $.ajax({ 
         url: ajaxurl, 
         type: 'POST', 
         data: formdata, 
         async: false, 
         success: function (retobj) { 
          console.log(JSON.stringify(retobj)); // TEST 
          if (retobj.succeeded) 
          { 
           $('.contact-form h1').text('Your email was submitted successfully!');  
           $('.contact-form input[type="text"]').hide();      
          } 
          else 
          { 
           $('.contact-form h1').text('Your email was not submitted successfully!'); 
          } 
         }, 
         error: function() { 
          // haven't decided what to do yet 
         }, 
         cache: false, 
         contentType: false, 
         processData: false 
        });    
       });

并进入PHP脚本的else块时（我不知道该if块因为我没有能够进去那里哈哈）我看到

"\r\n\r\n0"

打印到控制台，而我期望看到

{"succeeded":true,"msg":"There was a problem with the info you submitted."}

这些字符都来自哪里？尤其是0 ...自从我开始学习PHP以来，我总是得到一个0添加到我的回调对象的末尾。

来源

2015-08-14 Mediocre Web Dev

所以开始调试：垃圾你的代码调试输出和看看事情在哪里/何时执行。 –

你为什么要用'json.stringify'？ –

尝试将标题替换为'header（'Content-Type：application/json'）;'编辑：实际上，请尝试设置标题，因为该标题仅用于邮件。 – Berriel

你的PHP没有返回任何东西。

试试这个：修改内容类型为application/JSON

$headers = "MIME-Version: 1.0\r\nContent-Type: application/json; charset=ISO-8859-1\r\n";

，这增加了尽头......

echo '{"succeeded":true,"msg":"There was a problem with the info you submitted."}';

来源

2015-08-14 23:29:19 Shanimal

为什么我得到这个奇怪的JSON作为输出？

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