curl 无法读取cookie jar 文件：报错

curl_setopt($curl_session, CURLOPT_URL, $url_post);

curl_setopt($curl_session, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0.1) Gecko/20100101 Firefox/8.0.1");
curl_setopt($curl_session, CURLOPT_POST, 1);
 curl_setopt($curl_session, CURLOPT_REFERER,  "http://hi.baidu.com/liuanqi3/blog/create");
curl_setopt($curl_session, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl_session, CURLOPT_SSL_VERIFYHOST, 1);

curl_setopt($curl_session, CURLOPT_POSTFIELDS, $content_post);
//curl_setopt($curl_session, CURLOPT_COOKIEJAR, $cookie_jar);
curl_setopt($curl_session, CURLOPT_COOKIEFILE, $cookie_jar);

curl_setopt ($curl_session, CURLOPT_RETURNTRANSFER, 1);

生成的cookie 文件是这样

# Netscape HTTP Cookie File
# http://curl.haxx.se/rfc/cookie_spec.html
# This file was generated by libcurl! Edit at your own risk.

.baidu.com	TRUE	/	FALSE	1365155562	BAIDUID	BDDFCD14EA0AD5C1B38EDFD0DDCCB34E:FG=1
.baidu.com	TRUE	/	FALSE	0	BDUSS	85TmQyZ350VmdLN0gxdjVldjBvVUN-WDBUTVVXTFJLRUVlMEN1MWw0SnF1V3BRQUFBQUFBJCQAAAAAAAAAAApRIA57zggGbGl1YW5xaTMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADgusRwAAAAAOC6xHAAAAAAuWZCAAAAAAAxMC4yMy4yNGprfU9qa31PVm
#HttpOnly_.passport.baidu.com	TRUE	/	FALSE	0	PTOKEN	1184d4bd2d80961354d3eae7f6de6ff2
.passport.baidu.com	TRUE	/	FALSE	0	STOKEN	a2dbfbc5bb86151850526e70f6f40a66
#HttpOnly_.baidu.com	TRUE	/	FALSE	0	PTOKEN	
.baidu.com	TRUE	/	FALSE	1893456000	USERID	70bd897a5d1f0eea3c423d9f
.hi.baidu.com	TRUE	/	FALSE	0	BDSP	a4c27d1ed31a0ef411c28743a60a59dcb4e2c9dacd335a60e53ff925ab18972bd40735fae6cd7b899e510fb30f2442a7d933c895d143ad4bd11373f082025aafa40f4bfbfbedab64034f78f0f736afc379310a55b319ebc4b74543a98226cffc1c179f08
.hi.baidu.com	TRUE	/	FALSE	1806659562	BDSTAT	62d0f703fbe4dda308fa513d5e2f8f7b2ddb836eb2fb431664224f4a23a41d47

curl_setopt($curl_session,CURLOPT_HTTPHEADER,array(cookie:..... )