What does linux-thinkphp3.2.3 mean by this error?

When accessing the Signi method of the user controller of the index module, index/user/signin.html
What do you mean by this error?

-----------------------------------------I'm a split line-----------------------------------------

Vim look at this WriteHtmlCacheBehavior.class.php, the beginning of how many of the following ' garbled '?
The 11th line of this document is namespace Behavior;
Is thinkphp reporting this mistake?
This code is actually present in this file, although I see this code in vim on Linux.

-----------------------------------------I'm a split line-----------------------------------------
Stat WriteHtmlCacheBehavior.class.php
File: ' WriteHtmlCacheBehavior.class.php '
size:13551 blocks:32 IO block:4096 Regular file
device:ca11h/51729d inode:507923 links:1
Access: (0644/-rw-r--r--) Uid: (48/apache) Gid: (48/apache)
access:2016-06-03 22:44:14.000000000 +0800
modify:2015-12-25 18:58:34.000000000 +0800
change:2016-06-02 20:51:40.000000000 +0800

How to find out who was at this point in time, change:2016-06-02 20:51:40.000000000 +0800 changed this file?

Reply content:

When accessing the Signi method of the user controller of the index module, index/user/signin.html
What do you mean by this error?

-----------------------------------------I'm a split line-----------------------------------------

Vim look at this WriteHtmlCacheBehavior.class.php, the beginning of how many of the following ' garbled '?
The 11th line of this document is namespace Behavior;
Is thinkphp reporting this mistake?
This code is actually present in this file, although I see this code in vim on Linux.

-----------------------------------------I'm a split line-----------------------------------------
Stat WriteHtmlCacheBehavior.class.php
File: ' WriteHtmlCacheBehavior.class.php '
size:13551 blocks:32 IO block:4096 Regular file
device:ca11h/51729d inode:507923 links:1
Access: (0644/-rw-r--r--) Uid: (48/apache) Gid: (48/apache)
access:2016-06-03 22:44:14.000000000 +0800
modify:2015-12-25 18:58:34.000000000 +0800
change:2016-06-02 20:51:40.000000000 +0800

How to find out who was at this point in time, change:2016-06-02 20:51:40.000000000 +0800 changed this file?

Namespace must be placed at the beginning

$a = 1;
namespace xxxx;

This form is not going to work.

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