我有一个带有会话的页面。当我从同一会话中的另一个页面访问该页面时，它会引发此错误：
警告：session_start() [function.session-start]：无法发送会话缓存限制器 - 标头已在 /home/cooperat/public_html/admin 中发送（输出开始于 /home/cooperat/public_html/admin/applyforloan.php:4） /applyforloan.php 在第 7 行
下面是页面的代码：
<?php
//initialize the session
if (!isset($_SESSION)) {
session_start();
}
// ** Logout the current user. **
$logoutAction = $_SERVER['PHP_SELF']."?doLogout=true";
if ((isset($_SERVER['QUERY_STRING'])) && ($_SERVER['QUERY_STRING'] != "")){
$logoutAction .="&". htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
//to fully log out a visitor we need to clear the session varialbles
$_SESSION['MM_Username'] = NULL;
$_SESSION['MM_UserGroup'] = NULL;
$_SESSION['PrevUrl'] = NULL;
unset($_SESSION['MM_Username']);
unset($_SESSION['MM_UserGroup']);
unset($_SESSION['PrevUrl']);
$logoutGoTo = "appbye.php";
if ($logoutGoTo) {
header("Location: $logoutGoTo");
exit;
}
}
?>
<?php
if (!isset($_SESSION)) {
session_start();
}
$MM_authorizedUsers = "101";
$MM_donotCheckaccess = "false";
// *** Restrict Access To Page: Grant or deny access to this page
function isAuthorized($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 == "") && false) {
$isValid = true;
}
}
return $isValid;
}
$MM_restrictGoTo = "apploginfail.php";
if (!((isset($_SESSION['MM_Username'])) && (isAuthorized("",$MM_authorizedUsers, $_SESSION['MM_Username'], $_SESSION['MM_UserGroup'])))) {
$MM_qsChar = "?";
$MM_referrer = $_SERVER['PHP_SELF'];
if (strpos($MM_restrictGoTo, "?")) $MM_qsChar = "&";
if (isset($_SERVER['QUERY_STRING']) && strlen($_SERVER['QUERY_STRING']) > 0)
$MM_referrer .= "?" . $_SERVER['QUERY_STRING'];
$MM_restrictGoTo = $MM_restrictGoTo. $MM_qsChar . "accesscheck=" . urlencode($MM_referrer);
header("Location: ". $MM_restrictGoTo);
exit;
}
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($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 $theValue;
}
}
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($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;
}
}
$currentPage = $_SERVER["PHP_SELF"];
mysql_select_db($database_moneymanager, $moneymanager);
$query_members = "SELECT * FROM members";
$members = mysql_query($query_members, $moneymanager) or die(mysql_error());
$row_members = mysql_fetch_assoc($members);
$colname_members = "-1";
if (isset($_SESSION['MM_Username'])) {
$colname_members = $_SESSION['MM_Username'];
}
$username = $_SESSION['MM_Username'];
mysql_select_db($database_moneymanager, $moneymanager);
$query_members = sprintf("SELECT * FROM members WHERE username = %s", GetSQLValueString($colname_members, "text"));
$members = mysql_query($query_members, $moneymanager) or die(mysql_error());
$row_members = mysql_fetch_assoc($members);
$totalRows_members = mysql_num_rows($members);
mysql_select_db($database_moneymanager, $moneymanager);
$query_names = "SELECT First_name, last_name, memberid FROM members WHERE memberid != '2' AND username != '$username' ORDER BY memberid ASC";
$names = mysql_query($query_names, $moneymanager) or die(mysql_error());
$row_names = mysql_fetch_assoc($names);
$totalRows_names = mysql_num_rows($names);
$colname_loanername = "-1";
if (isset($_SESSION['MM_Username'])) {
$colname_loanername = $_SESSION['MM_Username'];
}
mysql_select_db($database_moneymanager, $moneymanager);
$query_loanername = sprintf("SELECT * FROM members WHERE username = %s", GetSQLValueString($colname_loanername, "text"));
$loanername = mysql_query($query_loanername, $moneymanager) or die(mysql_error());
$row_loanername = mysql_fetch_assoc($loanername);
$totalRows_loanername = mysql_num_rows($loanername);
mysql_select_db($database_moneymanager, $moneymanager);
$query_client = "SELECT * FROM customize";
$client = mysql_query($query_client, $moneymanager) or die(mysql_error());
$row_client = mysql_fetch_assoc($client);
$totalRows_client = mysql_num_rows($client);
$maxRows_contributions = 10;
$pageNum_contributions = 0;
if (isset($_GET['pageNum_contributions'])) {
$pageNum_contributions = $_GET['pageNum_contributions'];
}
$startRow_contributions = $pageNum_contributions * $maxRows_contributions;
$name = $_POST ['membername'];
$maxRows_contributions = 10;
$pageNum_contributions = 0;
if (isset($_GET['pageNum_contributions'])) {
$pageNum_contributions = $_GET['pageNum_contributions'];
}
$startRow_contributions = $pageNum_contributions * $maxRows_contributions;
$colname_contributions = "-1";
if (isset($_GET['year'])) {
$colname_contributions = $_GET['year'];
}
$colname2_contributions = "-1";
if (isset($_GET['memberid'])) {
$colname2_contributions = $_GET['memberid'];
}
$mid = $_POST['memberid'];
$year2 = $_POST['year2'];
$month2 = $_POST['month'];
$queryString_contributions = "";
if (!empty($_SERVER['QUERY_STRING'])) {
$params = explode("&", $_SERVER['QUERY_STRING']);
$newParams = array();
foreach ($params as $param) {
if (stristr($param, "pageNum_contributions") == false &&
stristr($param, "totalRows_contributions") == false) {
array_push($newParams, $param);
}
}
if (count($newParams) != 0) {
$queryString_contributions = "&" . htmlentities(implode("&", $newParams));
}
}
$queryString_contributions = sprintf("&totalRows_contributions=%d%s", $totalRows_contributions, $queryString_contributions);
$row = $startRow_contributions + 1;
?>
我正在与 Dreamweaver 合作。请问你觉得哪里出了问题？