一个CPU和内存使用的获取PHP函数

一个CPU和内存使用的获取函数

function amh_module_init_cpu()
{
	$data = array();
	$cpuinfo = file_get_contents('/proc/cpuinfo');
	$physical_list = array();
	$physical_sum = 0;
	$cores_sum = 0;
	$siblings_sum = 0;

	preg_match("/model name\s*:(.*)/", $cpuinfo, $name);
	preg_match("/vendor_id\s*:(.*)/", $cpuinfo, $vendor);
	preg_match("/cpu family\s*:(.*)/", $cpuinfo, $family);
	preg_match("/cpu MHz\s*:(.*)/", $cpuinfo, $MHz);
	preg_match("/cache size\s*:(.*)/", $cpuinfo, $cache);
	$name = isset($name[1]) ? $name[1] : 'No';
	$vendor = isset($vendor[1]) ? $vendor[1] : 'No';
	$family = isset($family[1]) ? $family[1] : 'No';
	$MHz = isset($MHz[1]) ? number_format($MHz[1]/1000, 2) : 'No';
	$cache = isset($cache[1]) ? $cache[1] : 'No';

	$p_list = explode("\nprocessor", $cpuinfo);
	foreach ($p_list as $key=>$val)
	{
		preg_match("/physical id\s*:(.*)/", $val, $physical);
		preg_match("/cpu cores\s*:(.*)/", $val, $cores);
		preg_match("/siblings\s*:(.*)/", $val, $siblings);
		if (isset($physical[1]))
		{
			if (!in_array($physical[1], $physical_list))
			{
				$physical_sum += 1;
				if (isset($cores[1]))
					$cores_sum += $cores[1];

				if (isset($siblings[1]))
					$siblings_sum += $siblings[1];
			}
			$physical_list[] = $physical[1];
		}
	}
	$data['name'] = $name;
	$data['physical_sum'] = $physical_sum > 0 ? $physical_sum : 1;
	$data['cores_sum'] = $cores_sum > 0 ? $cores_sum : 1;
	$data['siblings_sum'] = $siblings_sum > 0 ? $siblings_sum : 1;

	$data['MHz'] = $MHz;
	$data['cache'] = $cache;
	$data['vendor'] = $vendor;
	$data['family'] = $family;
	
	$use_cpu = 0.1;
	$result = explode("\n", shell_exec('ps aux'));
	foreach ($result as $key=>$val)
	{
		$val = preg_replace("/\s+/", " ", $val);
		$val = (explode(' ', $val));
		$use_cpu += isset($val[2]) ? $val[2] : 0;
	}
	$use_cpu = $data['siblings_sum'] > 0 ? ($use_cpu / $data['siblings_sum']) : $use_cpu;
	$use_cpu = $use_cpu > 100 ? 99 : $use_cpu;	// 文字值

	$usp_cpu = $use_cpu < 3 ? 3 : $use_cpu;		// 图表值
	$usp_cpu = $usp_cpu > 100 ? 99 : $usp_cpu;
	$free_cpu = 100 - $use_cpu;
	
	$data['usp_cpu'] = $usp_cpu;
	$data['free_cpu'] = $free_cpu;
	
	$result = explode("\n", shell_exec('free -m'));
	$mem_list = preg_replace("/\s+/", " ", $result[1]);
	$mem_arr = explode(' ', $mem_list);
	$data['total'] = $mem_arr[1];
	$data['used'] = (strpos($result[0], 'buff/cache') !== false) ? $mem_arr[2] : ($mem_arr[2] - $mem_arr[5] - $mem_arr[6]);
	$data['used_p'] = number_format($data['used'] / $data['total'], 2) * 100;
	$data['free'] = $data['total'] - $data['used'];
	$data['free_p'] = 100-$data['used_p'];
	$data['cached'] = (strpos($result[0], 'buff/cache') !== false) ? $mem_arr[5] : ($mem_arr[5] + $mem_arr[6]);
	return $data;
}