简单的linux下的php获取服务器状态的代码，不多说-直接上函数：

function get_used_status(){$fp = popen('top -b -n 2 | grep -E "^(Cpu|Mem|Tasks)"',"r");//获取某一时刻系统cpu和内存使用情况$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占有量$cpu_usage = trim(trim($cpu_info[0],'Cpu(s): '),'%us'); //百分比//内存占有量$mem_total = trim(trim($mem_info[0],'Mem: '),'k total'); $mem_used = trim($mem_info[1],'k used');$mem_usage = round(100*intval($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('ifconfig eth0 | grep -E "(inet addr)"','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($file_pointer); // 结束*/return array('cpu_usage'=>$cpu_usage,'mem_usage'=>$mem_usage,'hd_avail'=>$hd_avail,'hd_usage'=>$hd_usage,'tast_running'=>$tast_running,'detection_time'=>$detection_time);}