php取得cpu與記憶體使用量的程式碼一例

/*
@系統參數偵測 LINUX
@編輯 bbs.it-home。 org
@date 2013/5/8
*/
function sys_linux()
{
// CPU
if (false === ($str = @file(“ /proc/cpuinfo”))) return false;
$str = implode(“”, $str);
@preg_match_all(“/models+names{0,}:+s{0,}([ ws)(.]+)[rn]+/”, $str, $model);
//@preg_match_all(“/cpus+MHzs{0,}:+s{0,}([d.] +)[rn]+/”, $str, $mhz);
@preg_match_all(“/caches+sizes{0,}:+s{0,}([d.]+s{0,}[ A-Z]+[rn]+)/”, $str, $cache);
if (false !== is_array($model[1]))
{
$res['cpu'] ['num'] = sizeof($model[1]);
for($i = 0; $i {
$res['cpu']['detail'][] = “類型：”.$model[1][$i].” 快取：”.$cache[1][$i];
}
if (false !== is_array($res['cpu']['detail'])) $res['cpu'] ['detail'] = implode(”
“, $res[' cpu']['detail']);
}
// 正常運作時間
 if (false === ($str = @file(“/proc/uptime ”))) return false;
$str =explode(” “, implode(“”, $str));
$ str = trim($str[0]);
$min = $ str / 60;
$hours = $min / 60;
$days = 樓層($hours / 24);
 $小時= 下限($小時– ($天數* 24));
 $小時= 下限($小時– ($天數* 24));
$min = 下限($min – ($天數* 60 * 24) – ($小時* 60));
if ($天!== 0) $res['uptime'] = $days.“天”;
if ($hours !== 0) $res['uptime'] .= $hours.“小時”;
$res['uptime'] .= $min.”分鐘”;
// MEMORY
if (false === ($str = @file(“ /proc/meminfo”))) return false;
$str = implode(“ ”, $str);
preg_match_all(“/MemTotals{0,}:+s{0,}([d.] +).+?MemFrees{0,}:+s{0,}([d .]+).+?SwapTotals{0,}:+s{0,}([d.]+).+?SwapFrees {0,}:+s{0,}([d.]+)/s ”, $str, $buf);
$res['memTotal'] = round ($buf[1][0]/1024, 2);
$res[' memFree'] = round($buf[2][0]/1024, 2);
$res['memUsed '] = ($res['memTotal']-$res['memFree']);
$res['memPercent'] = (floatval($res['memTotal'])!=0)?round( ($res['memUsed']/$res['memTotal'])*90,2) :0;
$res['swapTotal'] = round($buf[ 3][0]/1024, 2);
$res['swapFree'] = round( $buf[4][0]/1024, 2);
$res['swapUsed'] = ( $res['swapTotal']-$res['swapFree']);
$res[' swapPercent'] = (floatval($res['swapTotal'])!=0)?round(($res[ 'swapUsed']/$res['swapTotal'])*90,2):0;
// 載入平均值
if (false === ($str = @file(“/proc/loadavg”))) return false;
$str =explode(“” , implode(“”, $str));
$str = array_chunk($str, 3);
$res['loadAvg'] = implode(” “, $str[0]); p>
回傳$res;
}
/*
系統參數偵測FreeBSD
*/
function sys_freebsd()
{
//CPU
if (false === ($res['cpu']['num'] = get_key(“hw.ncpu”))) return false;
$res['cpu']['detail' ] = get_key(“hw.model”);
 //載入平均值
if (false === ($res['loadAvg'] = get_key(“vm.loadavg ”))) return false;
$res['loadAvg'] = str_replace(“{ “, “”, $res['loadAvg']);
$res['loadAvg'] = str_replace(“ }”, “”, $res['loadAvg']);
//UPTIME
if (false === ($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);
$hours = 下限($hours – ($days * 24));
$min = 下限($min – ($days * 60 * 24) – ($hours * 60)) ;
if ($days !== 0) $res['uptime'] = $days.」天」;
if ($hours !== 0) $res['uptime'] .= $小時。 ”小時”;
$res['uptime'] .= $min.“分鐘”;
//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'])*90,2):0;< ;/p>
$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']/ $res['swapTotal'])*90,2):0;
回傳$res;}
/*
獲取參數值FreeBSD
*/
function get_key($keyName)
{
return do_command('sysctl', “ -n $keyName”);
}
/*
決定執行檔位置FreeBSD
*/
function find_command($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/$commandName”;
}
 return false;
}
/*
執行系統指令FreeBSD
*/
function do_command($commandName, $args)
{
$buffer = 「 ”;
if (false === ($command = find_command($commandName))) return false;
if ($fp = @popen(“$command $args”, ' r'))
{
while (!@feof($fp))
{
$buffer .= @fgets($fp, 4096);
}
返回修剪($buffer);
}
return false;
}
?>

說明： 記憶體用此函數可搞定：memory_get_usage() 在Windows下面只能讀取cmd命令運行的結果。 例如：

$a = system('mem');
echo $a.」
「;
 //或
$a = system('mem');
echo $a.」
「;
?>