之前编译安装的LNMP环境+phpmyamdin4.02的版本，今天突然出现这个问题：
复制代码 代码如下:Fatal error: session_start(): Failed to initialize storage module: files (path: ) in /data/puter.
; - User may access your site with the same session ID
; always using URL stored in browser's history or bookmarks.
; http://php.net/session.use-trans-sid
session.use_trans_sid = 0
; Select a hash function for use in generating session ids.
; Possible Values
; 0 (MD5 128 bits)
; 1 (SHA-1 160 bits)
; This option may also be set to the name of any hash function supported by
; the hash extension. A list of available hashes is returned by the hash_algos()
; function.
; http://php.net/session.hash-function
session.hash_function = 0
; Define how many bits are stored in each character when converting
; the binary hash data to something readable.
; Possible values:
; 4 (4 bits: 0-9, a-f)
; 5 (5 bits: 0-9, a-v)
; 6 (6 bits: 0-9, a-z, A-Z, "-", ",")
; Default Value: 4
; Development Value: 5
; Production Value: 5
; http://php.net/session.hash-bits-per-character
session.hash_bits_per_character = 5
; The URL rewriter will look for URLs in a defined set of HTML tags.
; form/fieldset are special; if you include them here, the rewriter will
; add a hidden <input> field with the info which is otherwise appended
; to URLs. If you want XHTML conformity, remove the form entry.
; Note that all valid entries require a "=", even if no value follows.
; Default Value: "a=href,area=href,frame=src,form=,fieldset="
; Development Value: "a=href,area=href,frame=src,input=src,form=fakeentry"
; Production Value: "a=href,area=href,frame=src,input=src,form=fakeentry"
; http://php.net/url-rewriter.tags
url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"

因为这个是在一台VPS上面配置的，上面有多个项目，于是小编打开一个项目，发现此项目的验证码功能是OK的。
于是查看代码如下：
复制代码 代码如下:
$sessSavePath = "/data/sessions/";
// Session保存路径
if(is_writeable($sessSavePath) && is_readable($sessSavePath)){ session_save_path($sessSavePath); }
if(!empty($cfg_domain_cookie)) session_set_cookie_params(0,'/',$cfg_domain_cookie);

上面这个代码是在session_start() 初始化之前来判断是否存在session会话的文件夹。
于是就在phpmyadmin里面的保存的那个文件/phpmyadmin/libraries/session.inc.php做了下修改:
复制代码 代码如下:
if (! isset($_COOKIE[$session_name])) {
// on first start of session we check for errors
// f.e. session dir cannot be accessed - session file not created
$orig_error_count = $GLOBALS['error_handler']->countErrors();
//session_save_path('./tmp');
session_save_path("/data/www/session");
$r = session_start();
if ($r !== true
|| $orig_error_count != $GLOBALS['error_handler']->countErrors()
) {
setcookie($session_name, '', 1);
/*
* Session initialization is done before selecting language, so we
* can not use translations here.
*/
PMA_fatalError('Cannot start session without errors, please check errors given in your PHP and/or webserver log file and configure your PHP installation properly. Also ensure that cookies are enabled in your browser.');
}
unset($orig_error_count);
} else {
session_save_path("/data/www/session");
session_start();
}

在 session_start(); 前面添加了 session_save_path(“/data/www/session”); 就解决了这个问题。
切记通过@ini_set(‘session.save_path', ”/data/www/session”);无效！
这个问题困扰了我几个小时，终于解决了，所以就记录下来，对日后应该会有帮助。