//This function does not check Swap state.

  function memory () {
    $results['ram'] = array();
    $results['swap'] = array();
    $results['devswap'] = array();

    $meminfo = execute_program('top', '-d 1 -f /tmp/TestRAM && grep Memory /tmp/TestRAM && rm -f /tmp/TestRAM');
    $ram = split(",", $meminfo);
    $temp = array();
    $temp = $ram;
    $tempUSED = explode(" ", $temp[0]);
    $tempVIRTUAL = explode(" ", $temp[1]);
    $tempFREE = explode(" ", $temp[2]);
    $results['ram']['shared'] = 0;
    $results['ram']['app'] = str_replace('K','',$tempUSED[1])/8;
    $results['ram']['free'] = str_replace('K','',$tempFREE[1])/8;
    $results['ram']['used'] = str_replace('K','',$tempVIRTUAL[1])/8;
    $results['ram']['buffers'] = $results['ram']['used'] - $results['ram']['app'];
    $results['ram']['total'] = $results['ram']['used'] + $results['ram']['free'];
    $results['ram']['percent'] = round(($results['ram']['used'] * 100) / $results['ram']['total']);
    $results['ram']['buffers_percent'] = round(($results['ram']['buffers'] * 100) / $results['ram']['total']);
    $results['ram']['app_percent'] = round(($results['ram']['app'] * 100) / $results['ram']['total']);
    //$results['ram']['free_percent'] = round(($results['ram']['free'] * 100) / $results['ram']['total']);
/* A voir si le /8 est nécessaire ou non */
    return $results;
  }