使用session变量时出现的错误？

[mj_3]

我在文件中写入
<?
session_start();
$_SESSION['var']="1";
echo "ok!";
?>
然后执行就出现：
Warning: open(C:\PHP\sessiondata\sess_f656312a510040cc2bc64242d73e82db, O_RDWR) failed: m (2) in D:\。。。\1.php on line 2
ok!
Warning: open(C:\PHP\sessiondata\sess_f656312a510040cc2bc64242d73e82db, O_RDWR) failed: m (2) in Unknown on line 0

Warning: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (C:\PHP\sessiondata) in Unknown on line 0
怎摸办啊？？？

[xuzuning]

目录C:\PHP\sessiondata不可写

[mj_3]

怎摸解决？

[4y8]

用 session_save_path(你的session保存目录) 指定一个目录。

<?
session_start();
$session_path="temp/";
session_save_path($session_path);
$_SESSION['var']="1";
echo "ok!";
?>

[xinxin1982]

php.ini中把session的目录/tmp
然后在php文件存放盘副根目录下建立tmp，就可以拉