请大家看一下这个是什么原因造成的?

前面加ob_start();
后面加ob_end_flush();

session_start();之前不要有输出(echo)之类的。连空行都要注意。

在session_start()前不要有任何html的输出..

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>counter</title>
</head><body>
<?php print(date("Y-m-d h:i:s A")); ?><?php echo " IP是".$REMOTE_ADDR.""; ?>
<?php
// *** Visit Counter ***
// FELIXONE 2002 - SB by Felice Di Stefano - www.felixone.it
$FX_digit = 9;
$FX_dpath = "FX_DataCounter";
$FX_fpath = "FX_DataCounter/counter.txt";
 // Check if directory and file exists, if not create it.
if (!file_exists($FX_fpath)) {
 if (!is_dir($FX_dpath)) {
 mkdir($FX_dpath, 0700);
 }
 $FX_fso = fopen($FX_fpath,"w");
 flock($FX_fso, 2);
 fputs($FX_fso, 0);
 flock($FX_fso, 3);
 fclose($FX_fso);
}
 // Read file and update it once per session
$FX_fso = fopen($FX_fpath,"r+");
$FX_count = fgets($FX_fso, 4096);
if (!session_id()) session_start();
if (!isset($HTTP_SESSION_VARS["FX_DataCounter"])) {
 fseek($FX_fso, 0);
 flock($FX_fso, 2);
 fputs($FX_fso, $FX_count+1);
 flock($FX_fso, 3);
 fclose($FX_fso);
 $FX_count++;
 $FX_DataCounter = $FX_count;
 session_register("FX_DataCounter");
}
 // Add leadings
$FX_numlength = strlen((string) $FX_count);
if ($FX_numlength < $FX_digit) {
 $FX_lead = (int) $FX_digit - $FX_numlength;
 for ($i=0; $i<$FX_lead; $i++) {
 $FX_count = "0" . $FX_count;
 }
}
?>
共<?php echo $FX_count ?>人浏览
<?php
//首先你要有读写文件的权限
//本程序可以直接运行,第一次报错,以缶涂梢?
$online_log = "count.dat"; //保存人数的文件,
$timeout = 30;//30秒内没动作者,认为掉线
$entries = file($online_log); $temp = array();

for ($i=0;$i<count($entries);$i++) {
$entry = explode(",",trim($entries[$i]));
if (($entry[0] != getenv('REMOTE_ADDR')) && ($entry[1] > time())) {
 array_push($temp,$entry[0].",".$entry[1]."\n"); //取出其他浏览者的信息,并去掉超时者,保存进$temp
}
} array_push($temp,getenv('REMOTE_ADDR').",".(time() + ($timeout))."\n"); //更新浏览者的时间
$users_online = count($temp); //计算在线人数 $entries = implode("",$temp);
//写入文件
$fp = fopen($online_log,"w");
flock($fp,LOCK_EX); //flock() 不能在NFS以及其他的一些网络文件系统中正常工作
fputs($fp,$entries);
flock($fp,LOCK_UN);
fclose($fp); echo " 有".$users_online."人在线"; ?>

</body>
</html>

这样你肯定错误..
在session start()以前下面的东西都不能有:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>counter</title>
</head><body>

<?php
// *** Visit Counter ***
// FELIXONE 2002 - SB by Felice Di Stefano - www.felixone.it
$FX_digit = 9;
$FX_dpath = "FX_DataCounter";
$FX_fpath = "FX_DataCounter/counter.txt";
 // Check if directory and file exists, if not create it.
if (!file_exists($FX_fpath)) {
 if (!is_dir($FX_dpath)) {
 mkdir($FX_dpath, 0700);
 }
 $FX_fso = fopen($FX_fpath,"w");
 flock($FX_fso, 2);
 fputs($FX_fso, 0);
 flock($FX_fso, 3);
 fclose($FX_fso);
}
 // Read file and update it once per session
$FX_fso = fopen($FX_fpath,"r+");
$FX_count = fgets($FX_fso, 4096);
if (!session_id()) session_start();
if (!isset($HTTP_SESSION_VARS["FX_DataCounter"])) {
 fseek($FX_fso, 0);
 flock($FX_fso, 2);
 fputs($FX_fso, $FX_count+1);
 flock($FX_fso, 3);
 fclose($FX_fso);
 $FX_count++;
 $FX_DataCounter = $FX_count;
 session_register("FX_DataCounter");
}
 // Add leadings
$FX_numlength = strlen((string) $FX_count);
if ($FX_numlength < $FX_digit) {
 $FX_lead = (int) $FX_digit - $FX_numlength;
 for ($i=0; $i<$FX_lead; $i++) {
 $FX_count = "0" . $FX_count;
 }
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>counter</title>
</head><body>
<?php print(date("Y-m-d h:i:s A")); ?><?php echo " IP是".$REMOTE_ADDR.""; ?>
共<?php echo $FX_count ?>人浏览
<?php
//首先你要有读写文件的权限
//本程序可以直接运行,第一次报错,以缶涂梢?
$online_log = "count.dat"; //保存人数的文件,
$timeout = 30;//30秒内没动作者,认为掉线
$entries = file($online_log); $temp = array();

for ($i=0;$i<count($entries);$i++) {
$entry = explode(",",trim($entries[$i]));
if (($entry[0] != getenv('REMOTE_ADDR')) && ($entry[1] > time())) {
 array_push($temp,$entry[0].",".$entry[1]."\n"); //取出其他浏览者的信息,并去掉超时者,保存进$temp
}
} array_push($temp,getenv('REMOTE_ADDR').",".(time() + ($timeout))."\n"); //更新浏览者的时间
$users_online = count($temp); //计算在线人数 $entries = implode("",$temp);
//写入文件
$fp = fopen($online_log,"w");
flock($fp,LOCK_EX); //flock() 不能在NFS以及其他的一些网络文件系统中正常工作
fputs($fp,$entries);
flock($fp,LOCK_UN);
fclose($fp); echo " 有".$users_online."人在线"; ?>

</body>
</html>
这样看看...

调试易

请大家看一下这个是什么原因造成的?

解决方案 »