PHP获取linux系统CPU,内存等信息.doc

<?php
functionget_used_status(){
$fp=popen('top-b-n2|grep-E"^(Cpu|Mem|Tasks)"',"r");//获取某一时刻系统cpu和内存使用情况
$rs="";
while(!feof($fp)){
$rs.=fread($fp,1024);
}
pclose($fp);
$sys_info=explode("\n",$rs);

$tast_info=explode(",",$sys_info[3]);//进程数组
$cpu_info=explode(",",$sys_info[4]);//CPU占有量数组
$mem_info=explode(",",$sys_info[5]);//内存占有量数组

//正在运行的进程数
$tast_running=trim(trim($tast_info[1],'running'));

//CPU空闲量
$cpu_usage=trim(trim($cpu_info[3],'Cpu(s):'),'%id');//百分比

//内存占有量
$mem_total=trim(trim($mem_info[0],'Mem:'),'ktotal');
$mem_used=trim($mem_info[1],'kused');
$mem_usage=round(100*intval($mem_used)/intval($mem_total),2);//百分比

/*硬盘使用率begin*/
$fp=popen('df-lh|grep-E"^(/)"',"r");
$rs=fread($fp,1024);
pclose($fp);
$rs=preg_replace("/\s{2,}/",'',$rs);//把多个空格换成“_”
$hd=explode("",$rs);
$hd_avail=trim($hd[3],'G');//磁盘可用空间大小单位G
$hd_usage=trim($hd[4],'%');//挂载点百分比
//print_r($hd);
/*硬盘使用率end*/

//检测时间
$fp=popen("date+\"%Y-%m-%d%H:%M\"","r");
$rs=fread($fp,1024);
pclose($fp);
$detection_time=trim($rs);

/*获取IP地址begin*/
/*
$fp=popen('ifconfigeth0|grep-E"(inetaddr)"','r');
$rs=fread($fp,1024);
pclose($fp);
$rs=preg_replace("/\s{2,}/",'',trim($rs));//把多个空格换成“_”
$rs=explode("",$rs);
$ip=trim($rs[1],'addr:');
*/
/*获取IP地址end*/
/*
$file_name="/tmp/data.txt";//绝对路径:homedata.dat
$file_pointer=fopen($file_name,"a+");//"w"是一种模式，详见后面
fwrite($file_pointer,$ip);//先把文件剪切为0字节大小，然后写入
fclose($file_pointer);//结束
*/

returnarray('cpu_usage'=>$cpu_usage,'mem_usage'=>$mem_usage,'hd_avail'=>$hd_avail,'hd_usage'=>$hd_usage,'tast_running'=>$tast_running,'detection_time'=>$detection_time);
}

//echodate("Y-m-dH:i:s",time())."<br>";

$status=get_used_status();
print_r($status);
?>