Re: [問題] 使用PHP自動導向

[xczh (我也要小老師 ><)]

function loadavg() {
        if (PHP_OS == Linux) {
                if ($fp = fopen('/proc/loadavg', 'r')) {
                $load = fread($fp, 14);
                fclose($fp);
                } else {
                $load = 'N.A';
                }
return $load;
}
這是參考phpsysinfo的

phpsysinfo有針對各種OS設計讀取負荷的函式

BSD是這樣的

  function loadavg () {
    $s = $this->grab_key('vm.loadavg');
    $s = ereg_replace('{ ', '', $s);
    $s = ereg_replace(' }', '', $s);
    $results = explode(' ', $s);    return $results;
  }

  function grab_key ($key) {
    return execute_program('sysctl', "-n $key");
  }

execute_program函式主要內容如下
function execute_program ($program, $args = '') {
  if ($fp = popen("$program $args", 'r')) {
    while (!feof($fp)) {
    $buffer .= fgets($fp, 4096);
    }
    return trim($buffer);
  }
}

我覺得可以直接簡化
$fp = fopen('vm.loadavg', 'r');
    while (!feof($fp)) {
    $s .= fgets($fp, 4096);
    }

$s = ereg_replace('{ ', '', $s);
$s = ereg_replace(' }', '', $s);
$results = explode(' ', $s);

return $results;

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