Information système php

<?php
error_reporting(5);

class systeme {
  // --- retourne un tableau indiquant la charge système
  function infos_charge() {
    if ($fd = fopen("/proc/loadavg", "r")) {
      $results = split(" ", fgets($fd, 4096));
      fclose($fd);
    }
    else {
      $results = array("xx","xx","xx");
    }
    return $results;
  }

   // --- retourne la valeur de uptime
  function infos_uptime() {
    $fd = fopen("/proc/uptime", "r");
    $tmptb = split(" ", fgets($fd, 4096));
    fclose($fd);
    $secondes = trim($tmptb[0]);
    $min = $secondes / 60;
    $heures = $min / 60;
    $jours = floor($heures / 24);
    $heures = floor($heures - ($jours * 24));
    $min = floor($min - ($jours * 60 * 24) - ($heures * 60));
    if ($days != 0) {
      $result = "$jours jours, ";
    }
    if ($hours != 0) {
      $result .= "$heures heures, ";
    }
    $result .= "$min minutes";
    return $result;
  }
  // --- retourne le nombre de sessions Apache
  function infos_apache() {
    $result = trim('ps -e | fgrep httpd |  wc -l');
    return $result;
  }

  // --- retourne des informations sur la CPU
  function infos_cpu() {
    $results = array();
    $tmptb = array();
    if ($fd = fopen("/proc/cpuinfo", "r")) {
      while ($buf = fgets($fd, 4096)) {
        list($key, $value) = preg_split("/\s+:\s+/", trim($buf), 2);
        switch ($key) {
          case "model name":
            $results['model'] = $value;
            break;
          case "cpu MHz":
            $results['mhz'] = sprintf("%.2f", $value);
            break;
          case "clock":
            $results['mhz'] = sprintf("%.2f", $value);
            break;
          case "cpu":
             $results['model'] = $value;
             break;
          case "revision":
             $results['model'] .= " (rev: " . $value . ")";
             break;
          case "cache size":
             $results['cache'] = $value;
             break;
          case "bogomips":
             $results['bogomips'] += $value;
             break;
          case "processor":
             $results['cpus'] += 1;
             break;
        }
      }
      fclose($fd);
    }
    $keys = compat_array_keys($results);
    $keys2be = array("model", "mhz", "cache", "bogomips", "cpus");
    while ($tmptb = each($keys2be)) {
      if (!compat_in_array($tmptb[1], $keys)) {
       $results[$tmptb[1]] = 'N.A.';
      }
    }
    return $results;
  }
  // --- informations sur la mémoire et la zone de swap
  function infos_memoire() {
    if ($fd = fopen("/proc/meminfo", "r")) {
      while ($buf = fgets($fd, 4096)) {
        if (preg_match("/Mem:\s+(.*)$/", $buf, $tmptb)) {
          $tmptb = preg_split("/\s+/", $tmptb[1], 6);
          $results['ram'] = array();
          $results['ram']['total'] = $tmptb[0] / 1024;
          $results['ram']['used'] = $tmptb[1] / 1024;
          $results['ram']['free'] = $tmptb[2] / 1024;
          $results['ram']['shared'] = $tmptb[3] / 1024;
          $results['ram']['buffers'] = $tmptb[4] / 1024;
          $results['ram']['cached'] = $tmptb[5] / 1024;
          $results['ram']['t_used'] = $results['ram']['used']
            - $results['ram']['cached']
            - $results['ram']['buffers'];
          $results['ram']['t_free'] = $results['ram']['total']
            - $results['ram']['t_used'];
          $results['ram']['percent'] = round(
            ($results['ram']['t_used'] * 100)
            / $results['ram']['total']);
        }
        if (preg_match("/Swap:\s+(.*)$/", $buf, $tmptb)) {
          $tmptb = preg_split("/\s+/", $tmptb[1], 3);
          $results['swap'] = array();
          $results['swap']['total'] = $tmptb[0] / 1024;
          $results['swap']['used'] = $tmptb[1] / 1024;
          $results['swap']['free'] = $tmptb[2] / 1024;
          $results['swap']['percent'] = round(($tmptb[1] * 100)
            / $tmptb[0]);
          break;
        }
      }
      fclose($fd);
    }
    else {
      $results['ram'] = array();
      $results['swap'] = array();
    }
    return $results;
  }

  // --- Retourne un tableau avec les informations sur chaque
  // partition. Ces informations sont elles-mêmes stockées
  // dans un tableau associatif
  function infos_disque() {
    $df = '/bin/df -kP';
    $mounts = split("\n", $df);
    $fstype = array();
    if ($fd = fopen("/proc/mounts", "r")) {
      while ($buf = fgets($fd, 4096)) {
        list($dev, $mpoint, $type) = preg_split("/\s+/", trim($buf), 4);
        $fstype[$mpoint] = $type;
        $fsdev[$dev] = $type;
      }
      fclose($fd);
    }
    for ($i = 1; $i < sizeof($mounts) - 1; $i++) {
      $tmptb = preg_split("/\s+/", $mounts[$i], 6);
      $results[$i - 1] = array();
      $results[$i - 1]['disk'] = $tmptb[0];
      $results[$i - 1]['size'] = $tmptb[1];
      $results[$i - 1]['used'] = $tmptb[2];
      $results[$i - 1]['free'] = $tmptb[3];
      $results[$i - 1]['percent'] = $tmptb[4];
      $results[$i - 1]['mount'] = $tmptb[5];
      ($fstype[$tmptb[5]]) ? $results[$i - 1]['fstype'] =
        $fstype[$tmptb[5]] : $results[$i - 1]['fstype'] =
        $fsdev[$tmptb[0]];
    }
    return $results;
  }

  // --- fonction de formattage
  function format_ko($ko, $decimales = 2) {
    if ($ko > 1048576) {
      $result = sprintf("%." . $decimales . "f", $ko / 1048576);
      $result .= ' Go';
    }
    elseif ($ko > 1024) {
      $result = sprintf("%." . $decimales . "f", $ko / 1024);
      $result .= ' Mo';
    }
    else {
      $result = sprintf("%." . $decimales . "f", $ko);
      $result .= ' Ko';
    }
    return $result;
  }

}
?>