获取linux 系统硬件相关信息的PHP类

<?php      class CServerInfo  {         static public function getCpuData($speed = 0.5)      {             if (false === ($prevVal = @file("/proc/stat"))) return false;          $prevVal = implode($prevVal, PHP_EOL);          $prevArr = explode(' ', trim($prevVal));          $prevTotal = $prevArr[2] + $prevArr[3] + $prevArr[4] + $prevArr[5];          $prevIdle = $prevArr[5];          usleep($speed * 1000000);          $val = @file("/proc/stat");          $val = implode($val, PHP_EOL);          $arr = explode(' ', trim($val));          $total = $arr[2] + $arr[3] + $arr[4] + $arr[5];          $idle = $arr[5];          $intervalTotal = intval($total - $prevTotal);          return round(100 * (($intervalTotal - ($idle - $prevIdle)) / $intervalTotal),2);      }         /**       * Cpu相关信息       * @return array|bool       */      static public function getCpuInfoData()      {          if (false === ($str = @file("/proc/cpuinfo"))) return false;          $str = implode("", $str);          @preg_match_all("/model\s+name\s{0,}\:+\s{0,}([\w\s\)\(\@.-]+)([\r\n]+)/s", $str, $model);          @preg_match_all("/cpu\s+MHz\s{0,}\:+\s{0,}([\d\.]+)[\r\n]+/", $str, $mhz);          @preg_match_all("/cache\s+size\s{0,}\:+\s{0,}([\d\.]+\s{0,}[A-Z]+[\r\n]+)/", $str, $cache);          @preg_match_all("/bogomips\s{0,}\:+\s{0,}([\d\.]+)[\r\n]+/", $str, $bogomips);          $res = array();          if (false !== is_array($model[1])) {              $res['cpu']['num'] = sizeof($model[1]);              if ($res['cpu']['num'] == 1)                  $x1 = '';              else                  $x1 = ' &times;' . $res['cpu']['num'];              $res['cpu']['mhz'] = $mhz[1][0];              $mhz[1][0] = ' <br />   频率:' . $mhz[1][0];              $res['cpu']['cache'] = $cache[1][0];              $cache[1][0] = ' <br />   二级缓存:' . $cache[1][0];              $res['cpu']['bogomips'] = $bogomips[1][0];              $bogomips[1][0] = ' <br />  Bogomips:' . $bogomips[1][0];              $res['cpu']['model'][] = $model[1][0] . $mhz[1][0] . $cache[1][0] . $bogomips[1][0] . $x1;              if (false !== is_array($res['cpu']['model'])) $res['cpu']['model'] = implode("<br />", $res['cpu']['model']);              if (false !== is_array($res['cpu']['mhz'])) $res['cpu']['mhz'] = implode("<br />", $res['cpu']['mhz']);              if (false !== is_array($res['cpu']['cache'])) $res['cpu']['cache'] = implode("<br />", $res['cpu']['cache']);              if (false !== is_array($res['cpu']['bogomips'])) $res['cpu']['bogomips'] = implode("<br />", $res['cpu']['bogomips']);          }          return $res;      }         /**       * 内存相关数据       * 单位为B       * @return array|bool       */      static public function getMenData()      {          if (false === ($str = @file("/proc/meminfo"))) return false;          $str = implode("", $str);          preg_match_all("/MemTotal\s{0,}\:+\s{0,}([\d\.]+).+?MemFree\s{0,}\:+\s{0,}([\d\.]+).+?Cached\s{0,}\:+\s{0,}([\d\.]+).+?SwapTotal\s{0,}\:+\s{0,}([\d\.]+).+?SwapFree\s{0,}\:+\s{0,}([\d\.]+)/s", $str, $buf);          preg_match_all("/Buffers\s{0,}\:+\s{0,}([\d\.]+)/s", $str, $buffers);          $res = array();          $res['memTotal'] = round($buf[1][0] / 1024, 2);          $res['memFree'] = round($buf[2][0] / 1024, 2);          $res['memBuffers'] = round($buffers[1][0] / 1024, 2);          $res['memCached'] = round($buf[3][0] / 1024, 2);          $res['memUsed'] = $res['memTotal'] - $res['memFree'];          $res['memPercent'] = (floatval($res['memTotal']) != 0) ? round($res['memUsed'] / $res['memTotal'] * 100, 2) : 0;             $res['memRealUsed'] = $res['memTotal'] - $res['memFree'] - $res['memCached'] - $res['memBuffers']; //真实内存使用          $res['memRealFree'] = $res['memTotal'] - $res['memRealUsed']; //真实空闲          $res['memRealPercent'] = (floatval($res['memTotal']) != 0) ? round($res['memRealUsed'] / $res['memTotal'] * 100, 2) : 0; //真实内存使用率             $res['memCachedPercent'] = (floatval($res['memCached']) != 0) ? round($res['memCached'] / $res['memTotal'] * 100, 2) : 0; //Cached内存使用率             $res['swapTotal'] = round($buf[4][0] / 1024, 2);          $res['swapFree'] = round($buf[5][0] / 1024, 2);          $res['swapUsed'] = round($res['swapTotal'] - $res['swapFree'], 2);          $res['swapPercent'] = (floatval($res['swapTotal']) != 0) ? round($res['swapUsed'] / $res['swapTotal'] * 100, 2) : 0;                //判断内存如果小于1G，就显示M，否则显示G单位             if ($res['memTotal'] < 1024) {              $memTotal = $res['memTotal'] . " M";              $mt = $res['memTotal'] . " M";              $mu = $res['memUsed'] . " M";              $mf = $res['memFree'] . " M";              $mc = $res['memCached'] . " M"; //cache化内存              $mb = $res['memBuffers'] . " M"; //缓冲              $st = $res['swapTotal'] . " M";              $su = $res['swapUsed'] . " M";              $sf = $res['swapFree'] . " M";              $swapPercent = $res['swapPercent'];              $memRealUsed = $res['memRealUsed'] . " M"; //真实内存使用              $memRealFree = $res['memRealFree'] . " M"; //真实内存空闲              $memRealPercent = $res['memRealPercent']; //真实内存使用比率              $memPercent = $res['memPercent']; //内存总使用率              $memCachedPercent = $res['memCachedPercent']; //cache内存使用率          } else {              $memTotal = round($res['memTotal'] / 1024, 3) . " G";              $mt = round($res['memTotal'] / 1024, 3) . " G";              $mu = round($res['memUsed'] / 1024, 3) . " G";              $mf = round($res['memFree'] / 1024, 3) . " G";              $mc = round($res['memCached'] / 1024, 3) . " G";              $mb = round($res['memBuffers'] / 1024, 3) . " G";              $st = round($res['swapTotal'] / 1024, 3) . " G";              $su = round($res['swapUsed'] / 1024, 3) . " G";              $sf = round($res['swapFree'] / 1024, 3) . " G";              $swapPercent = $res['swapPercent'];              $memRealUsed = round($res['memRealUsed'] / 1024, 3) . " G"; //真实内存使用              $memRealFree = round($res['memRealFree'] / 1024, 3) . " G"; //真实内存空闲              $memRealPercent = $res['memRealPercent']; //真实内存使用比率              $memPercent = $res['memPercent']; //内存总使用率              $memCachedPercent = $res['memCachedPercent']; //cache内存使用率          }             $res['u_memTotal'] = $memTotal;          $res['u_memTotal'] = $mt;          $res['u_memUsed'] = $mu;          $res['u_memFree'] = $mf;          $res['u_memCached'] = $mc; //cache化内存          $res['u_memBuffers'] = $mb; //缓冲          $res['u_swapTotal'] = $st;          $res['u_swapUsed'] = $su;          $res['u_swapFree'] = $sf;          $res['u_swapPercent'] = $swapPercent;          $res['u_memRealUsed'] = $memRealUsed; //真实内存使用          $res['u_memRealFree'] = $memRealFree; //真实内存空闲          $res['u_memRealPercent'] = $memRealPercent; //真实内存使用比率          $res['u_memPercent'] = $memPercent; //内存总使用率          $res['u_memCachedPercent'] = $memCachedPercent; //cache内存使用率          return $res;      }            /**       * 硬盘情况       * @return array       */      static public function getDiskData()      {          $iTotal = round(@disk_total_space(".") / (1024 * 1024 * 1024), 3); //总          $iUsableness = round(@disk_free_space(".") / (1024 * 1024 * 1024), 3); //可用          $iImpropriate = $iTotal - $iUsableness; //已用          $iPercent = (floatval($iTotal) != 0) ? round($iImpropriate / $iTotal * 100, 2) : 0;          $sDesc = '';          if($iPercent>85){              $sDesc ="<span style='color: #f40'>磁盘空间不多了，建议近期清理一下日志</span>";          }          if($iPercent>95){              $sDesc ="<span style='color: #f40'>磁盘空间快满了，可能会影响审计系统正常使用，建议立即清理日志</span>";          }                return array(              'iTotal' => $iTotal,              'iUsableness' => $iUsableness,              'iImpropriate' => $iImpropriate,              'iPercent' => $iPercent,              'sDesc' => $sDesc,          );      }         /**       * 网接相关流量信息       */      static public function getInterfaceData()      {             //mii-tool          $strs = @file("/proc/net/dev");             for ($i = 2; $i < count($strs); $i++) {              preg_match_all("/([^\s]+):[\s]{0,}(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/", $strs[$i], $info);              $NetOutSpeed[$i] = $info[10][0]; //入网实时              $NetInputSpeed[$i] = $info[2][0]; //出网实时              $NetInput[$i] = self::formatsize($info[2][0]); //入网流量              $NetOut[$i] = self::formatsize($info[10][0]); //出网流量          }      }         /**       * 单位自动转换       * @param $size       * @return string       */      static public function formatSize($size)      {          $danwei = array(' B ', ' K ', ' M ', ' G ', ' T ');          $allsize = array();          $i = 0;             for ($i = 0; $i < 5; $i++) {              if (floor($size / pow(1024, $i)) == 0) {                  break;              }          }          $allsize1 = array();          for ($l = $i - 1; $l >= 0; $l--) {              $allsize1[$l] = floor($size / pow(1024, $l));              if (isset($allsize1[$l + 1])) {                     $allsize[$l] = $allsize1[$l] - $allsize1[$l + 1] * 1024;              }          }             $len = count($allsize);          $fsize = "";          for ($j = $len - 1; $j >= 0; $j--) {              $fsize = $fsize . $allsize[$j] . $danwei[$j];          }          return $fsize;      }  }     ?>