[php]奇怪的问题，一个可以正常访问的页面，却返回 500

[kn007]

地址：
http://kn007.net/ip.php
打开错误显示：
error_reporting("E_ALL");
ini_set("display_errors", 1);
返回200，没有任何错误回显，不过有notice：
PHP Notice: Undefined index: ip in ~WWW/kn007.net/ip.php on line 9
Line 9: $ip=$_POST['ip'];

我仔细检查了一遍，完全没问题，权限正常，编码正常。
php、nginx的log正常。

[kn007]

直接命令行，返回
root@kn007:~WWW/kn007.net
> php ip.php |grep PHP
PHP Notice: Undefined index: ip in ip.php on line 9
PHP Notice: Undefined variable: ip in ip.php on line 94
PHP Notice: Undefined index: ip in ip.php on line 214
PHP Notice: Undefined variable: ipdata in ip.php on line 245
PHP Notice: Trying to get property of non-object in ip.php on line 245
PHP Notice: Undefined variable: ipdata in ip.php on line 245
PHP Notice: Trying to get property of non-object in ip.php on line 245
PHP Notice: Undefined variable: ipdata in ip.php on line 245
PHP Notice: Trying to get property of non-object in ip.php on line 245
PHP Notice: Undefined variable: ipdata in ip.php on line 245
PHP Notice: Trying to get property of non-object in ip.php on line 245
PHP Notice: Undefined variable: ipdata in ip.php on line 245
PHP Notice: Trying to get property of non-object in ip.php on line 245
PHP Notice: Undefined variable: otheripdata in ip.php on line 245

[abelyao]

话说我打开没问题…

[fu82581983]

应该是PHP Notice: Trying to get property of non-object in ip.php on line 245引起的，确保对象实例化正确。

[gongpeione]

if(!empty($_POST['ip']))
$ip=$_POST['ip'];

这样？

[em70]

你的php配置文件关闭了显示错误提示，但又出现异常就会500错误，可以把错误提示打开，调通了再改回去

[kn007]

@abelyao 打开是没问题的，但是实际HTTP CODE是500

[kn007]

@fu82581983 命令行就会，直接线上是没问题的。应该不是这个问题。另外500是Fatal Error才会引起的

[kn007]

@gongpeione 我改过了，没用。。。php不需要如此严谨的模式

[kn007]

@em70 额，我正文不是打开了么，只有notice

[ETiV]

curl -I 'http://kn007.net/ip.php'
HTTP/1.1 200 OK

这是调好了?

[kn007]

@ETiV 算是，还在改。。排除法。。

[gongpeione]

引用了未定义的变量然后又关了错误显示是返回500的 _(:з」∠)_

[kn007]

@gongpeione 找到原因了。。。晕死。
Memcached没有close传递。
PHP Fatal error: Call to undefined method Memcached::close() in ~WWW/kn007.net/ip.php on line 299

[kn007]

已解决，谢谢各位 @ETiV @abelyao @em70 @fu82581983 @gongpeione
错误原因：
PHP Fatal error: Call to undefined method Memcached::close() in ~WWW/kn007.net/ip.php on line 299

Memcached没有close传递。利用
ini_set('error_log', dirname(__FILE__) . '/error_log.txt');
得到的。。。太囧了。网页居然都没错误，命令行也没错误。必须输出到txt才会显示这个Fatal error

[ETiV]

哦对. 我记起来了...

display_error 设定不会输出到 html, 还一个 把error 输出到 html 的设定需要打开才能看得见.