php获取linux服务器CPU、内存、硬盘使用率的实现代码

define("MONITORED_IP", "172.16.0.191"); //被监控的服务器IP地址 也就是本机地址
define("DB_SERVER", "172.16.7.2"); //存放数据的服务器IP地址
define("DB_USER", "root");
define("DB_PWD","111111");
define("DB_NMAE","performance");
class MyConnect{
    public function connect($db_server,$db_user,$db_pwd,$db_name)
    {
        $conn = mysql_connect($db_server,$db_user,$db_pwd);
        if (!$conn){
            die('连接数据库失败: ' . mysql_error());
        }
        $flag = mysql_select_db($db_name,$conn);
        if(!$flag){
            echo "数据库连接出错!";
            exit();
        }else{
            mysql_query("SET NAMES UTF8");
        }
    }
}
?>

/**

* 获取服务器性能CPU、内存、硬盘等使用率
* Edit bbs.it-home.org
*/
/*连接数据 begin*/
include("conn.php");
$obj_MyConnect = new MyConnect();
$obj_MyConnect -> connect(DB_SERVER,DB_USER,DB_PWD,DB_NMAE);
/*连接数据 end*/
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);
$sys_info = explode("
",$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);
}
//echo date("Y-m-d H:i:s",time())."
";
$status=get_used_status();
$sql = "insert into performance(ip,cpu_usage,mem_usage,hd_avail,hd_usage,tast_running,detection_time) ";
$sql .= " value('".MONITORED_IP."','".$status['cpu_usage']."','".$status['mem_usage']."','".$status['hd_avail']."','".$status['hd_usage']."','".$status['tast_running']."','".$status['detection_time']."')";
$query = mysql_query($sql) or die("SQL 语句执行失败!");
unset($status);
//echo date("Y-m-d H:i:s",time())."
";
?>