PHP implementation code to obtain Linux server CPU, memory, and hard disk usage

define("MONITORED_IP", "172.16.0.191"); //The monitored server IP address is also the local address
define("DB_SERVER", "172.16.7.2"); //The IP address of the server where the data is stored
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('Failed to connect to database: ' . mysql_error());
 }
 $flag = mysql_select_db($db_name,$conn);
 if(!$flag){
 echo "Database connection error! p>";exit();
 }else{
 mysql_query("SET NAMES UTF8");
 }
 }
}
?>

2. Get the file get_used_status for server performance data. php

/**
 * Get server performance CPU, memory, hard disk and other usage rates
 * Edit bbs.it-home.org
*/
 /*Connection data begin*/
 include("conn.php");
 $obj_MyConnect = new MyConnect() ;
 $obj_MyConnect -> connect(DB_SERVER,DB_USER,DB_PWD,DB_NMAE);
 /*Connect data end*/

 function get_used_status(){
 $fp = popen('top -b -n 2 | grep -E "^(Cpu|Mem|Tasks)"',"r");//Get the system cpu and memory usage at a certain moment
 $rs = "";
 while(!feof($fp)){
 $rs .= fread($fp,1024);
 }
 pclose($fp);
 $sys_info = explode("n",$rs);
 $tast_info = explode(", ",$sys_info[3]);//Process array
 $cpu_info = explode(",",$sys_info[4]); //CPU occupancy array
 $mem_info = explode(",",$sys_info[5 ]); //Memory occupancy array
 //Number of running processes
 $tast_running = trim(trim($tast_info[1],'running'));


 / /CPU usage
 $cpu_usage = trim(trim($cpu_info[0],'Cpu(s): '),'%us'); //Percentage

 //Memory usage
 $mem_total = trim(trim ($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); //Percent

 /*Hard disk usage begin*/
 $fp = popen('df -lh | grep -E "^(/ )"',"r");
 $rs = fread($fp,1024);
 pclose($fp);
 $rs = preg_replace("/s{2,}/",' ',$rs) ; //Replace multiple spaces with "_"
 $hd = explode(" ",$rs);
 $hd_avail = trim($hd[3],'G'); //Disk available space size unit G
 $hd_usage = trim($hd[4],'%'); //Mount point percentage
 //print_r($hd);
 /*Hard disk usage end*/

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

 /*Get IP address begin*/
 /*
 $fp = popen('ifconfig eth0 | grep -E "(inet addr)"','r');
 $rs = fread($fp,1024);
 pclose($fp);
 $rs = preg_replace("/s{2,}/",' ',trim($rs)); //Replace multiple spaces with " _”
 $rs = explode(" ",$rs);
 $ip = trim($rs[1],'addr:');
 */
 /*Get IP addressend*/
 /*
 $ file_name = "/tmp/data.txt"; // Absolute path: homedata.dat
 $file_pointer = fopen($file_name, "a+"); // "w" is a mode, see below for details
 fwrite($ file_pointer,$ip); // First cut the file to 0 bytes, then write
 fclose($file_pointer); // End
 */

 return array('cpu_usage'=>$cpu_usage,' mem_usage'=> /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 statement execution failed!");
 unset($status);

 //echo date("Y-m-d H :i:s",time())."";
?>



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