“警告:不能修改标题信息
可能重复:
PHP已经发送了头文件
每次我尝试提交表单删除表单时,我都会收到此错误。
警告:无法修改头文件信息 - 第106行的C: xampp htdocs speedycms deleteclient.php中的头文件(由C: xampp htdocs speedycms deleteclient.php:47开始)
我的代码有什么问题吗? 我需要改变以使其工作?
<?php
if (!isset($_SESSION)) {
session_start();
}
$MM_authorizedUsers = "";
$MM_donotCheckaccess = "true";
// *** Restrict Access To Page: Grant or deny access to this page
function isAuthorized($strUsers, $strGroups, $UserName, $UserGroup) {
// For security, start by assuming the visitor is NOT authorized.
$isValid = False;
// When a visitor has logged into this site, the Session variable MM_Username set equal to their username.
// Therefore, we know that a user is NOT logged in if that Session variable is blank.
if (!empty($UserName)) {
// Besides being logged in, you may restrict access to only certain users based on an ID established when they login.
// Parse the strings into arrays.
$arrUsers = Explode(",", $strUsers);
$arrGroups = Explode(",", $strGroups);
if (in_array($UserName, $arrUsers)) {
$isValid = true;
}
// Or, you may restrict access to only certain users based on their username.
if (in_array($UserGroup, $arrGroups)) {
$isValid = true;
}
if (($strUsers == "") && true) {
$isValid = true;
}
}
return $isValid;
}
$MM_restrictGoTo = "login.php";
if (!((isset($_SESSION['MM_Username'])) && (isAuthorized("",$MM_authorizedUsers, $_SESSION['MM_Username'], $_SESSION['MM_UserGroup'])))) {
$MM_qsChar = "?";
$MM_referrer = $_SERVER['PHP_SELF'];
if (strpos($MM_restrictGoTo, "?")) $MM_qsChar = "&";
if (isset($QUERY_STRING) && strlen($QUERY_STRING) > 0)
$MM_referrer .= "?" . $QUERY_STRING;
$MM_restrictGoTo = $MM_restrictGoTo. $MM_qsChar . "accesscheck=" . urlencode($MM_referrer);
header("Location: ". $MM_restrictGoTo);
exit;
}
?>
<?php
require_once('Connections/speedycms.php');
$client_id = mysql_real_escape_string($_GET['id']);
$con = mysql_connect($hostname_speedycms, $username_speedycms, $password_speedycms);
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("speedycms") or die(mysql_error());
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
if (PHP_VERSION < 6) {
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
}
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
if ((isset($_GET['id'])) && ($_GET['id'] != "") && (isset($_POST['deleteForm']))) {
$deleteSQL = sprintf("DELETE FROM tbl_accident WHERE id=%s",
GetSQLValueString($_GET['id'], "int"));
mysql_select_db($database_speedycms, $speedycms);
$Result1 = mysql_query($deleteSQL, $speedycms) or die(mysql_error());
$deleteGoTo = "progress.php";
if (isset($_SERVER['QUERY_STRING'])) {
$deleteGoTo .= (strpos($deleteGoTo, '?')) ? "&" : "?";
$deleteGoTo .= $_SERVER['QUERY_STRING'];
}
header(sprintf("Location: %s", $deleteGoTo));
}
mysql_select_db($database_speedycms, $speedycms);
$query_delete = "SELECT * FROM tbl_accident WHERE id=$client_id";
$delete = mysql_query($query_delete, $speedycms) or die(mysql_error());
$row_delete = mysql_fetch_assoc($delete);
$totalRows_delete = mysql_num_rows($delete);
?>
<p class="form2">Are you sure you wish to <b>delete</b> the record for <?php echo $row_delete['clientName']; ?>?</p>
<form name="form" method="POST" action="<?php echo $deleteAction; ?>">
<p class="form2"><input type="submit" value="Yes" />
<input name="no" type="button" id="no" value="No" />
</p>
<input type="hidden" name="deleteForm" value="form" />
</form>
事先感谢你!
45-47行:
?>
<?php
这是发送一些换行符作为输出,所以头文件已经分派。 只要删除这3行(它毕竟是一个大的PHP块,不需要结束PHP解析,然后再次启动),以及60-62行的类似块,它就可以工作。
请注意,您获得的错误消息实际上为您提供了大量信息,以帮助您自己找到此信息:
警告:无法修改头文件信息 - 第106行的C: xampp htdocs speedycms deleteclient.php中的头文件(由C: xampp htdocs speedycms deleteclient.php:47开始 )
两个加粗的部分告诉你在标题(第47行)之前发送输出的项目以及输出后(第106行)尝试发送标题的项目的位置。
这通常发生在开始会话之前脚本出现意外输出时。 用你当前的代码,你可以尝试使用输出缓冲来解决它。
尝试添加对ob_start();
的调用ob_start();
函数在脚本的最顶端和ob_end_flush();
在文件的最后。
检查文档编码 。
我有同样的问题。 我使用Notepad ++和WampServer在Windows XP上开发本地运行Apache,一切都很好。 上传到在Unix上使用Apache的托管提供商后,我得到了这个错误。 在结束标记后,我没有额外的PHP标记或额外行中的空格。
对我来说这是由文本文件的编码引起的。 我在Notepad ++(Encoding选项卡下)中使用了“ 无BOM转换为UTF-8 ”选项并重新加载到Web服务器。 修正了问题,无需更改代码/编辑。
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