标题PHP函数有问题 [英] Having problems with header PHP function

问题描述

我在php中使用header函数时遇到了一些麻烦。我的代码应该检查几个布尔值并执行适当的代码块。当我执行脚本时，我收到此错误消息，警告：无法修改标头信息 - 已在/ home2 / truck35 / public_html /中通过（/home2/truck35/public_html/ShowLove/Captcha_Post.php:34开始的输出）发送的标头第73行的ShowLove / Captcha_Post.php。我读到在函数调用之前不应该输出任何字符但是，我有点困惑这实际意味着什么。该脚本适用于我的开发WAMP服务器。任何帮助，将不胜感激。这是我正在处理的脚本。

<？php 
 session_start（）; 
 require_once（'Test_Input.php'）; 
 
 
 if（！isset（$ _ SESSION ['Form_First_Name']）||！isset（$ _ SESSION ['Form_Last_Name']）||！isset（$ _ SESSION ['Form_Email'] ）||！isset（$ _ SESSION ['Form_Message']））
 {
 $ _SESSION ['Form_First_Name'] =''; 
 $ _SESSION ['Form_Last_Nameorm'] =''; 
 $ _SESSION ['Form_Email'] =''; 
 $ _SESSION ['Form_Message'] =''; 
} 
 
 
 if（isset（$ _ POST ['Clear']）&& $ _POST ['Clear'] =='clear'）
 {
 $ _SESSION ['Form_First_Name'] =''; 
 $ _SESSION ['Form_Last_Nameorm'] =''; 
 $ _SESSION ['Form_Email'] =''; 
 $ _SESSION ['Form_Message'] =''; 
 unset（$ _ SESSION ['name_Switch']）; 
 unset（$ _ SESSION ['Form_Email_Switch']）; 
 //header('location:Contact_Form.php'）; 
} 
 
 $ response = $ _POST ['Response']; 
 $ image_request = $ _POST ['DB_Response']; 
 $ first_name = $ _SESSION ['Form_First_Name'] = $ _POST ['First_Name']; 
 $ last_name = $ _SESSION ['Form_Last_Name'] = $ _POST ['Last_Name']; 
 $ email = $ _SESSION ['Form_Email'] = $ _POST ['Email']; 
 $ _SESSION ['Form_Message'] = $ _POST ['Message']; 
 
 
 $ first_name_result = Test_Input :: name_validation（$ first_name）; 
 var_dump（$ first_name_result）; 
 $ last_name_result = Test_Input :: name_validation（$ last_name）; 
 $ email_result = Test_Input :: email_validation（$ email）; 
 
 if（！$ first_name_result ||！$ last_name_result）
 {
 $ _SESSION ['Name_Switch'] = false; 
 header（'location：Contact_Form.php'）; 
} 
 
 if（！$ email_result）
 {
 $ _SESSION ['Form_Email_Switch'] = false; 
 header（'location：Contact_Form.php'）; 
} 
 
 if（$ response！= $ image_request）
 {
 
 // unset（$ _ SESSION ['Form_Switch']）; 
未设置（$ _ SESSION ['Email_Switch']）; 
 header（'location：Contact_Form.php'）; 
} 
 
 else 
 {
 global $ first_name; 
 global $ last_name; 
 global $ email; 
 $ message ='FROM：'。$ first_name。''。$ last_name。'\ n \ n'。 $ _POST [消息]; 
 $ to ='[e-mail]'; 
 $ subject ='显示爱情生产联系表格'; 
 $ headers = $ email; 
邮件（$ to，$ subject，$ message，$ headers）; 
 $ _SESSION ['Email_Switch'] = true; 
 unset（$ _ SESSION ['Form_First_Name']）; 
 unset（$ _ SESSION ['Form_Last_Name']）; 
未设置（$ _ SESSION ['Form_Email']）; 
 unset（$ _ SESSION ['Form_Message']）; 
 header（'location：Contact_Form.php'）; 
} 
？> 

我尝试了什么：



我尝试使用ob_start（）和ob_end_clean（）函数进行输出缓冲，但它们不起作用。

解决方案

< blockquote> _SESSION ['Form_First_Name']）|| ！isset（

_SESSION ['Form_Last_Name']）|| ！isset（

_SESSION ['Form_Email']）|| ！isset（

I am having some trouble using the header function in php. My code is supposed to check several Boolean values and execute the appropriate block of code. When I execute the script I get this error message,"Warning: Cannot modify header information - headers already sent by (output started at /home2/truck35/public_html/ShowLove/Captcha_Post.php:34) in /home2/truck35/public_html/ShowLove/Captcha_Post.php on line 73". I read that no characters are supposed to be outputted before the function call but, I am a little confused what is actually meant by this. The script works on my development WAMP server. Any help would be appreciated. Here is the script that I am working on.

<?php
session_start();
require_once('Test_Input.php');


if(!isset($_SESSION['Form_First_Name']) || !isset($_SESSION['Form_Last_Name']) || !isset($_SESSION['Form_Email']) || !isset($_SESSION['Form_Message']))
{
	$_SESSION['Form_First_Name'] = '';
	$_SESSION['Form_Last_Nameorm'] = '';
	$_SESSION['Form_Email'] = '';
	$_SESSION['Form_Message'] = '';
} 


if(isset($_POST['Clear']) && $_POST['Clear'] == 'clear')
{
	$_SESSION['Form_First_Name'] = '';
	$_SESSION['Form_Last_Nameorm'] = '';
	$_SESSION['Form_Email'] = '';
	$_SESSION['Form_Message'] = '';
	unset($_SESSION['name_Switch']);
	unset($_SESSION['Form_Email_Switch']);
	//header('location:Contact_Form.php');
}

$response = $_POST['Response'];
$image_request = $_POST['DB_Response'];
$first_name = $_SESSION['Form_First_Name'] = $_POST['First_Name'];
$last_name = $_SESSION['Form_Last_Name'] = $_POST['Last_Name'];
$email = $_SESSION['Form_Email'] = $_POST['Email'];
$_SESSION['Form_Message'] = $_POST['Message'];


$first_name_result = Test_Input::name_validation($first_name);
var_dump($first_name_result);
$last_name_result = Test_Input::name_validation($last_name);
$email_result = Test_Input::email_validation($email);

if(!$first_name_result || !$last_name_result )
{
	$_SESSION['Name_Switch'] = false;
	header('location:Contact_Form.php');
}

if (!$email_result)
{
	$_SESSION['Form_Email_Switch'] = false;
	header('location:Contact_Form.php');
}

if($response != $image_request)
{
	 
	//unset($_SESSION['Form_Switch']);
	unset($_SESSION['Email_Switch']);
	header('location:Contact_Form.php');
}

else 
{
	global $first_name;
	global $last_name;
	global $email;
	$message = 'FROM: '.$first_name.' '.$last_name.' \n\n'. $_POST['Message'];
	$to = '[e-mail]';
	$subject = 'Show Love Production Contact Form';
	$headers = $email;
	mail($to, $subject, $message, $headers);
	$_SESSION['Email_Switch'] = true;
	unset($_SESSION['Form_First_Name']);
	unset($_SESSION['Form_Last_Name']);
	unset($_SESSION['Form_Email']);
	unset($_SESSION['Form_Message']);
header('location:Contact_Form.php');
}
?>

What I have tried:

I tried using the ob_start() and ob_end_clean() functiona for output buffering but, they do not work.

解决方案

_SESSION['Form_First_Name']) || !isset(

_SESSION['Form_Last_Name']) || !isset(

_SESSION['Form_Email']) || !isset(

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