Question

我正在尝试使用recaptcha与PHP和AJAX，我被卡住了。出于某种原因，每当我尝试从$ _POST中取出一些东西时，我都会收到错误消息。

我正在运行PHP 4.4。

<?php  

require_once('includes/recaptchalib.php');  
define("PRIV_KEY", "yesthereisakeyhere");  

$name = $_POST['name'];  // This line comes back as undefined index 
$email = $_POST['email'];  //This line comes back as undefined index 

if(in_array('', array($name, $email))) {  
//one (or more) of the required fields is empty  
$result = "field_error";  
} else {  
 $resp = recaptcha_check_answer (PRIV_KEY, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);  // 2 more undefined index errors here. 
 if (!$resp->is_valid) {  
     //Captcha was entered incorrectly  
  $result = "captcha_error";  
   } else {  
     //Captcha was entered correctly  
     $result = "success";  
     //mail function goes in here.
 }  
}  

echo $result;  
?>

这是我的HTML供参考：

<?php
    require_once('includes/recaptchalib.php');
    define("PUB_KEY", "yesthereisakeyhere");  
?>
<form class="form" method="post">     
    <label>Name *</label>
    <input type="text" name="name" class="required" />
    <label>Email *</label>
    <input type="text" name="email" class="required" />

    <?php echo recaptcha_get_html(PUB_KEY); ?>  

    <input type="submit" value="GET A QUOTE" />
</form>

这是我的AJAX调用参考：

$("#locator-quote input[type=submit]").click(function() {            
        $(".message").removeClass("success").removeClass("error").addClass("loader").html("Sending message").fadeIn("slow");  
            $.ajax({  
                type: "POST",  
                url: "ajax.php",  
                data: $(this).serialize(),  
                dataType: 'text',  
                success: function(msg){
                $('body').prepend('<h1>' + msg + '</h1>')  /// This line is for testing
                switch(msg) {

                case "field_error": // one or more fields is/are empty  
                    $(".message").removeClass("loader").addClass("error");  
                    $(".message").html("Please fill in all the required fields.");  
                    break;  
                case "captcha_error": // captcha wasn't typed correctly  
                    $(".message").removeClass("loader").addClass("error");  
                    $(".message").html("Please type the words correctly and try again!");  
                    break;  
                case "success": // all good  
                    $(".message").removeClass("loader").addClass("success");  
                    $(".message").html("Your message has been sent. You'll soon hear from us!");  
                    break;  
                default: // Hmm. The default case. You never know.  
                alert("Something is wrong. Please try again.");  
                    }  
                }  
            });  
            Recaptcha.reload();  
            return false;  
        });

Answer 1

问题是你试图序列化按钮而不是表格。

您正在收听$("#locator-quote input[type=submit]").click事件，因此this将成为按钮。

您需要序列化表单。

$(this).closest('form').serialize()

或者，而是绑定到表单的.submit事件。

$('.form').submit(function(){
    var data = $(this).serialize();

    return false;
});

当通过AJAX访问时，来自$ _POST的PHP 4.4未定义的索引错误

1 个答案: