PHP系统功能提供了不寻常的输出

我的PHP代码PHP系统功能提供了不寻常的输出

$last_line = system('service airtime-media-monitor status'); 
echo $last_line;

我的浏览器显示

AIRTIME_STATUS_URL    = [1;32mhttp://localhost:80/api/status/format/json/api_key/%%api_key%%[0m 
AIRTIME_SERVER_RESPONDING  = [1;32mOK[0m 
KERNEL_VERSION     = [1;32m2.6.32-21-generic[0m 
MACHINE_ARCHITECTURE   = [1;32mi686[0m 
TOTAL_MEMORY_MBYTES   = [1;32m2051244[0m 
TOTAL_SWAP_MBYTES    = [1;32mUNKNOWN[0m 
AIRTIME_VERSION    = [1;32m2.3.1[0m 
OS        = [1;32mUbuntu 10.04 LTS i686[0m 
CPU       = [1;32mIntel(R) Core(TM)2 Duo CPU  E8400 @ 3.00GHz[0m 
WEB_SERVER      = [1;32mApache/2.2.14 (Ubuntu)[0m 
PLAYOUT_ENGINE_PROCESS_ID  = [1;32m1195[0m 
PLAYOUT_ENGINE_RUNNING_SECONDS = [1;32m121517[0m 
PLAYOUT_ENGINE_MEM_PERC  = [1;32m0.5%[0m 
PLAYOUT_ENGINE_CPU_PERC  = [1;32m0.4%[0m 
LIQUIDSOAP_PROCESS_ID   = [1;32m4362[0m 
LIQUIDSOAP_RUNNING_SECONDS  = [1;32m4564[0m 
LIQUIDSOAP_MEM_PERC   = [1;32m0.7%[0m 
LIQUIDSOAP_CPU_PERC   = [1;32m11.4%[0m 
MEDIA_MONITOR_PROCESS_ID  = [1;32m1489[0m 
MEDIA_MONITOR_RUNNING_SECONDS = [1;32m121509[0m 
MEDIA_MONITOR_MEM_PERC   = [1;32m0.5%[0m 
MEDIA_MONITOR_CPU_PERC   = [1;32m0.0%[0m 
-- Your installation of Airtime looks OK! 
-- Your installation of Airtime looks OK!null

，这是命令实际上是如何显示此

AIRTIME_STATUS_URL    = http://localhost:80/api/status/format/json/api_key/%%api_key%%           
AIRTIME_SERVER_RESPONDING  = OK 
KERNEL_VERSION     = 2.6.32-21-generic 
MACHINE_ARCHITECTURE   = i686 
TOTAL_MEMORY_MBYTES   = 2051244 
TOTAL_SWAP_MBYTES    = UNKNOWN 
AIRTIME_VERSION    = 2.3.1 
OS        = Ubuntu 10.04 LTS i686 
CPU       = Intel(R) Core(TM)2 Duo CPU  E8400 @ 3.00GHz 
WEB_SERVER      = Apache/2.2.14 (Ubuntu) 
PLAYOUT_ENGINE_PROCESS_ID  = 1195 
PLAYOUT_ENGINE_RUNNING_SECONDS = 121187 
PLAYOUT_ENGINE_MEM_PERC  = 0.5% 
PLAYOUT_ENGINE_CPU_PERC  = 0.0% 
LIQUIDSOAP_PROCESS_ID   = 4362 
LIQUIDSOAP_RUNNING_SECONDS  = 4234 
LIQUIDSOAP_MEM_PERC   = 0.7% 
LIQUIDSOAP_CPU_PERC   = 11.4% 
MEDIA_MONITOR_PROCESS_ID  = 1489 
MEDIA_MONITOR_RUNNING_SECONDS = 121179 
MEDIA_MONITOR_MEM_PERC   = 0.5% 
MEDIA_MONITOR_CPU_PERC   = 0.0% 
-- Your installation of Airtime looks OK!

问：那么是什么系统函数的问题，以及其他值是从哪里来的，因为我期待Web浏览器回声通过我的commnad显示，以及如何解决它

PS：注意我跑的PHP页面和命令几秒钟分开，以便值是有点过

来源

2013-04-13 Charm_quark