Description:
------------
When I browse cacti.log, I find some date information are strange. I list them bellow.

05/04/2014 11:55:17 PM - SPINE: Poller[0] Host[25] TH[1] DS[525] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'
05/04/2014 11:55:25 PM - SPINE: Poller[0] Host[25] TH[1] DS[525] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'
05/04/2014 11:56:28 PM - SYSTEM STATS: Time:86.5674 Method:spine Processes:1 Threads:1 Hosts:84 HostsPerProcess:84 DataSources:4237 RRDsProcessed:1129
05/04/2014 11:56:28 PM - SYSTEM THOLD STATS: Time:0.0173 Tholds:1 DownHosts:0
05/04/2014 11:56:28 PM - WEATHERMAP: Poller[0] Weathermap 0.97c starting - Normal logging mode. Turn on DEBUG in Cacti for more information

05/04/2014 11:56:28 PM - WEATHERMAP: Poller[0] STATS: Weathermap 0.97c run complete - Sun, 04 May 14 23:56:28 +0800: 0 maps were run in 0 seconds with 0 warnings.
05/05/2014 12:01:18 AM - SYSTEM STATS: Time:77.6253 Method:spine Processes:1 Threads:1 Hosts:84 HostsPerProcess:84 DataSources:4237 RRDsProcessed:1124
05/05/2014 12:01:18 AM - SYSTEM THOLD STATS: Time:0.0188 Tholds:1 DownHosts:0
05/05/2014 12:01:18 AM - WEATHERMAP: Poller[0] Weathermap 0.97c starting - Normal logging mode. Turn on DEBUG in Cacti for more information

05/05/2014 12:01:18 AM - WEATHERMAP: Poller[0] STATS: Weathermap 0.97c run complete - Mon, 05 May 14 00:01:18 +0800: 0 maps were run in 0 seconds with 0 warnings.
05/05/2014 12:05:17 AM - SPINE: Poller[0] Host[25] Hostname[10.1.10.12] ERROR: HOST EVENT: Host is DOWN Message: Host did not respond to SNMP
05/05/2014 12:06:19 AM - SYSTEM STATS: Time:78.5439 Method:spine Processes:1 Threads:1 Hosts:84 HostsPerProcess:84 DataSources:4237 RRDsProcessed:1124
05/05/2014 12:06:19 AM - SYSTEM THOLD STATS: Time:0.0186 Tholds:1 DownHosts:0
05/05/2014 12:06:19 AM - WEATHERMAP: Poller[0] Weathermap 0.97c starting - Normal logging mode. Turn on DEBUG in Cacti for more information

.....................#ommit

05/05/2014 12:51:28 AM - WEATHERMAP: Poller[0] STATS: Weathermap 0.97c run complete - Mon, 05 May 14 00:51:28 +0800: 0 maps were run in 0 seconds with 0 warnings.
05/05/2014 12:56:19 AM - SYSTEM STATS: Time:78.3940 Method:spine Processes:1 Threads:1 Hosts:84 HostsPerProcess:84 DataSources:4237 RRDsProcessed:1124
05/05/2014 12:56:19 AM - SYSTEM THOLD STATS: Time:0.0189 Tholds:1 DownHosts:0
05/05/2014 12:56:19 AM - WEATHERMAP: Poller[0] Weathermap 0.97c starting - Normal logging mode. Turn on DEBUG in Cacti for more information

05/05/2014 12:56:19 AM - WEATHERMAP: Poller[0] STATS: Weathermap 0.97c run complete - Mon, 05 May 14 00:56:19 +0800: 0 maps were run in 0 seconds with 0 warnings.
05/05/2014 01:00:19 AM - SPINE: Poller[0] Host[25] TH[1] DS[252] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'
05/05/2014 01:00:19 AM - SPINE: Poller[0] Host[25] TH[1] DS[252] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'
05/05/2014 01:00:19 AM - SPINE: Poller[0] Host[25] TH[1] DS[519] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'
05/05/2014 01:00:19 AM - SPINE: Poller[0] Host[25] TH[1] DS[519] WARNING: SNMP timeout detected [2000 ms], ignoring host '10.1.10.12'

The date column is 
05/04/2014 11:56:28 PM
...
05/05/2014 12:01:18 AM
....
05/05/2014 01:00:19 AM

It should be wrong,so I do some test to confirm it.

[root@CactiEZ ~]# uname -a
Linux CactiEZ.local 2.6.32-71.el6.i686 #1 SMP Fri Nov 12 04:17:17 GMT 2010 i686 i686 i386 GNU/Linux
[root@CactiEZ ~]# php -v
PHP 5.3.2 (cli) (built: Nov 12 2010 08:16:13) 
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
[root@CactiEZ ~]# date -s 00:01:01 
Mon May  5 00:01:01 CST 2014
[root@CactiEZ ~]# php -r 'echo date("h");'
12[root@CactiEZ ~]# 

related information in php.ini
[Date]
date.timezone = PRC

I follow the source file, and find related code line in function date_format (ext/date/php_date.c)

static char *date_format(char *format, int format_len, timelib_time *t, int localtime)
{
...
			case 'h': length = slprintf(buffer, 32, "%02d", (t->h % 12) ? (int) t->h % 12 : 12); break;
...
}

I think this code line shoud be

case 'h': length = slprintf(buffer, 32, "%02d", t->h % 12); break;


Test script:
---------------
php -r 'echo date("h");'

Expected result:
----------------
I think the result should be 00.



Actual result:
--------------
The actual result is 12.