PHP FreeBSD system probe Program

function Sys_freebsd () {
Cpu
if (false = = = = ($res [' CPU '] [' num '] = Get_key ("Hw.ncpu")) return false;
$res [' CPU '] [' model '] = Get_key ("Hw.model");

LOAD AVG
if (false = = = ($res [' loadavg '] = Get_key ("Vm.loadavg")) return false;

UPTIME
if (false = = ($buf = Get_key ("Kern.boottime")) return false;
$buf = Explode (", $buf);
$sys _ticks = time ()-Intval ($buf [3]);
$min = $sys _ticks/60;
$hours = $min/60;
$days = Floor ($hours/24);
$hours = Floor ($hours-($days * 24));
$min = Floor ($min-($days *)-($hours * 60));
if ($days!== 0) $res [' uptime '] = $days. " Days ";
if ($hours!== 0) $res [' uptime ']. = $hours. " Hours ";
$res [' uptime ']. = $min. " Minutes ";

MEMORY
if (false = = ($buf = Get_key ("Hw.physmem")) return false;
$res [' memtotal '] = round ($buf/1024/1024, 2);
$buf = Explode ("n", Do_command ("Vmstat", ""));
$buf = Explode ("", Trim ($buf [2]));

$res [' memfree '] = round ($buf [5]/1024, 2);
$res [' memused '] = ($res [' Memtotal ']-$res [' Memfree ']);
$res [' mempercent '] = (floatval ($res [' memtotal '])!=0)? Round ($res [' memused ']/$res [' Memtotal ']*100,2]: 0;

$buf = Explode ("n", Do_command ("Swapinfo", "K"));
$buf = $buf [1];
Preg_match_all ("/([0-9]+) s+ ([0-9]+) s+ ([0-9]+)/", $buf, $BUFARR);
$res [' swaptotal '] = round ($bufArr [1][0]/1024, 2);
$res [' swapused '] = round ($bufArr [2][0]/1024, 2);
$res [' swapfree '] = round ($bufArr [3][0]/1024, 2);
$res [' swappercent '] = (floatval ($res [' swaptotal '])!=0)? Round ($res [' swapused ']/$res [' Swaptotal ']*100,2]: 0;

return $res;
}

Get parameter Value FreeBSD
function Get_key ($keyName) {
Return Do_command (' Sysctl ', "-N $keyName");
}

Determine the execution file location FreeBSD
function Find_command ($commandName) {
$path = Array ('/bin ', '/sbin ', '/usr/bin ', '/usr/sbin ', '/usr/local/bin ', '/usr/local/sbin ');
foreach ($path as $p) {
if (@is_executable ("$p/$commandName") return "$p/$commandName";
}
return false;
}

Execute system Command FreeBSD
function Do_command ($commandName, $args) {
$buffer = "";
if (false = = ($command = Find_command ($commandName)) return false;
if ($fp = @popen ("$command $args", ' R ')) {
while (! @feof ($fp)) {
$buffer. = @fgets ($fp, 4096);
}
Return trim ($buffer);
}
return false;
}