发现Typecho后台服务器状态插件
在翻Typecho插件的时候，我偶然发现了两双筷子写的Typecho后台服务器状态查看插件，于是就尝试了一下下。
这个插件在桌面端网页没问题，感觉还挺不错的。
但是一旦变成移动端，后台的布局就会出现问题，逼死强迫症。
而且，CPU利用率有时候还会变成0.9999999999%这种离谱的数据，我寻思着就不能取两位小数好看一点吗？
于是，我决定，自己修改代码，把服务器信息移动到页面底部的位置，并且修改显示数据的逻辑，让信息看着更加舒适一点。（其实也不完全是我写，是面向LLM编程 X）
修改代码的过程
首先，需要把注册方法的地方改为页面底部
Typecho_Plugin::factory('admin/footer.php')->begin = array('LinuxInfo_Plugin', 'render');然后就是修改一下插入的样式：
echo <<<STR
<div style="color: #999; line-height: 1.8; text-align: center;">
$info_str
</div>
<div style="height:40px;display:block;"></div>
STR;因为我觉的系统信息用鼠标悬浮预览不明显，于是修改为直接独立一行把信息全部展示：
return <<<SYS_INFO
服务器信息:
<br>持续运行：{$uptime}，Web服务器：{$_SERVER['SERVER_SOFTWARE']}，PHP 版本：{$php['version']}，SAPI 接口：{$php['sapi']}，PHP内存限制：{$php['mem_max']}，上传文件限制：{$php['up_max']}
SYS_INFO;以及让LLM帮忙完善了CPU信息获取的逻辑：
private static function cpu_info(){
function GetCoreInformation() {
$data = file('/proc/stat');
$cores = [];
foreach( $data as $line ) {
if( preg_match('/^cpu[0-9]/', $line) ) {
$info = explode(' ', $line);
$cores[] = [
'user' => $info[1],
'nice' => $info[2],
'sys' => $info[3],
'idle' => $info[4],
'iowait' => $info[5],
'irq' => $info[6],
'softirq' => $info[7]
];
}
}
return $cores;
}
function GetCpuPercentages($stat1, $stat2) {
if(count($stat1) !== count($stat2)){
return;
}
$cpus = [];
for( $i = 0, $l = count($stat1); $i < $l; $i++) {
$dif = [];
$dif['user'] = $stat2[$i]['user'] - $stat1[$i]['user'];
$dif['nice'] = $stat2[$i]['nice'] - $stat1[$i]['nice'];
$dif['sys'] = $stat2[$i]['sys'] - $stat1[$i]['sys'];
$dif['idle'] = $stat2[$i]['idle'] - $stat1[$i]['idle'];
$dif['iowait'] = $stat2[$i]['iowait'] - $stat1[$i]['iowait'];
$dif['irq'] = $stat2[$i]['irq'] - $stat1[$i]['irq'];
$dif['softirq'] = $stat2[$i]['softirq'] - $stat1[$i]['softirq'];
$total = array_sum($dif);
$cpu = [];
foreach($dif as $x=>$y) $cpu[$x] = round($y / $total * 100, 2);
$cpus['CPU' . $i] = $cpu;
}
return $cpus;
}
$stat1 = GetCoreInformation();
sleep(1);
$stat2 = GetCoreInformation();
$data = GetCpuPercentages($stat1, $stat2);
$overall_cpu_usage = 0;
$core_details = [];
foreach ($data as $core => $usage) {
$core_usage = 100 - $usage['idle'];
$overall_cpu_usage += $core_usage;
$core_details[] = "{$core}: " . number_format($core_usage, 2) . "%";
}
$overall_cpu_usage = round($overall_cpu_usage / count($data), 2);
$core_details_str = implode(", ", $core_details);
$sys_load = sys_getloadavg();
$sys_load_1min = number_format($sys_load[0], 3);
$sys_load_5min = number_format($sys_load[1], 3);
$sys_load_15min = number_format($sys_load[2], 3);
return <<<CPU_INFO
<span style="cursor: default" title="CPU使用：{$core_details_str}
系统负载：1分钟：{$sys_load_1min} 5分钟：{$sys_load_5min} 15分钟：{$sys_load_15min}
">CPU: {$overall_cpu_usage} %</span>
CPU_INFO;
}原来的逻辑只是判断单个CPU的占有率，当CPU数量为多个的时候就会不准确，这里我优化成了整体利用率，并且悬停时会显示每个CPU的占用率信息。
改造效果
虽然不是彻底重构，但是我对改造后的插件还是比较满意的。
手机的网页端也舒服了。
修改后的插件分享
修改后的插件已经放到了GitHub：Typecho-LinuxInfo
反正源码也不多，我这里也可以直接放出来：Plugin.php:
<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;
/**
* 查看系统信息，仅限 Linux 系统，基于<a href="https://www.dbkuaizi.com" target="_blank">两双筷子</a>的插件进行二次开发，<a href="https://github.com/Chocola-X/Typecho-LinuxInfo" target="_blank">使用帮助</a>
*
* @package LinuxInfo
* @author GTX690战术核显卡导弹
* @version 1.1.0
* @link https://www.nekopara.uk
*/
class LinuxInfo_Plugin implements Typecho_Plugin_Interface
{
// 插件名称
protected static $plugin_name = 'LinuxInfo';
/**
* 激活插件方法,如果激活失败,直接抛出异常
*
* @access public
* @return void
* @throws Typecho_Plugin_Exception
*/
public static function activate()
{
// 如果当前系统不是 linux 则抛出错误
if(PHP_OS != 'Linux') {
throw new Typecho_Plugin_Exception(_t("此插件仅支持 Linux 系统"));
}
// 在后端页面底部 注册方法
Typecho_Plugin::factory('admin/footer.php')->begin = array('LinuxInfo_Plugin', 'render');
}
/**
* 禁用插件方法,如果禁用失败,直接抛出异常
*
* @static
* @access public
* @return void
* @throws Typecho_Plugin_Exception
*/
public static function deactivate(){}
/**
* 获取插件配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form 配置面板
* @return void
*/
public static function config(Typecho_Widget_Helper_Form $form)
{
/** 分类名称 */
$show_item = array(
'cpu_info' => _t('CPU使用情况') . '（ CPU 使用率、系统负载）',
'mem_info' => _t('内存使用情况') . '（内存使用率、SWAP交换分区）',
'disk_info' => _t('磁盘使用情况') . '（磁盘使用率、磁盘已用空间、磁盘总空间）',
'sys_info' => _t('服务器信息') . ' （系统运行时间、服务器软件、PHP 版本、SAPI 接口、PHP 内存限制、上传文件限制）',
);
// 设置默认选中
$show_option_value = ['cpu_info','mem_info','disk_info'];
$ShowInfo = new Typecho_Widget_Helper_Form_Element_Checkbox('show_items',$show_item, $show_option_value, _t('选择显示系统信息'));
$form->addInput($ShowInfo->multiMode());
$separator = new Typecho_Widget_Helper_Form_Element_Text('separator', NULL, ' ★ ', _t('分隔符'), '设置数据项分割字符');
$form->addInput($separator);
}
/**
* 个人用户的配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form
* @return void
*/
public static function personalConfig(Typecho_Widget_Helper_Form $form){}
/**
* 插件实现方法
*
* @access public
* @return void
*/
public static function render()
{
$show_items = Typecho_Widget::widget('Widget_Options')->plugin(self::$plugin_name)->show_items;
$separator = Typecho_Widget::widget('Widget_Options')->plugin(self::$plugin_name)->separator;
// 获取 linux 系统消息
$info_str = '';
$show_items_max = count($show_items) - 1;
foreach ($show_items as $show_item_k => $show_item) {
$method = $show_item;
if (method_exists(__CLASS__, $method)) {
$info_str .= self::$method();
}
if ($show_items_max != $show_item_k) {
$info_str .= $separator;
}
}
echo <<<STR
<div style="color: #999; line-height: 1.8; text-align: center;">
$info_str
</div>
<div style="height:40px;display:block;"></div>
STR;
}
// 获取CPU信息
private static function cpu_info(){
function GetCoreInformation() {
$data = file('/proc/stat');
$cores = [];
foreach( $data as $line ) {
if( preg_match('/^cpu[0-9]/', $line) ) {
$info = explode(' ', $line);
$cores[] = [
'user' => $info[1],
'nice' => $info[2],
'sys' => $info[3],
'idle' => $info[4],
'iowait' => $info[5],
'irq' => $info[6],
'softirq' => $info[7]
];
}
}
return $cores;
}
function GetCpuPercentages($stat1, $stat2) {
if(count($stat1) !== count($stat2)){
return;
}
$cpus = [];
for( $i = 0, $l = count($stat1); $i < $l; $i++) {
$dif = [];
$dif['user'] = $stat2[$i]['user'] - $stat1[$i]['user'];
$dif['nice'] = $stat2[$i]['nice'] - $stat1[$i]['nice'];
$dif['sys'] = $stat2[$i]['sys'] - $stat1[$i]['sys'];
$dif['idle'] = $stat2[$i]['idle'] - $stat1[$i]['idle'];
$dif['iowait'] = $stat2[$i]['iowait'] - $stat1[$i]['iowait'];
$dif['irq'] = $stat2[$i]['irq'] - $stat1[$i]['irq'];
$dif['softirq'] = $stat2[$i]['softirq'] - $stat1[$i]['softirq'];
$total = array_sum($dif);
$cpu = [];
foreach($dif as $x=>$y) $cpu[$x] = round($y / $total * 100, 2);
$cpus['CPU' . $i] = $cpu;
}
return $cpus;
}
$stat1 = GetCoreInformation();
sleep(1);
$stat2 = GetCoreInformation();
$data = GetCpuPercentages($stat1, $stat2);
$overall_cpu_usage = 0;
$core_details = [];
foreach ($data as $core => $usage) {
$core_usage = 100 - $usage['idle'];
$overall_cpu_usage += $core_usage;
$core_details[] = "{$core}: " . number_format($core_usage, 2) . "%";
}
$overall_cpu_usage = round($overall_cpu_usage / count($data), 2);
$core_details_str = implode(", ", $core_details);
$sys_load = sys_getloadavg();
$sys_load_1min = number_format($sys_load[0], 3);
$sys_load_5min = number_format($sys_load[1], 3);
$sys_load_15min = number_format($sys_load[2], 3);
return <<<CPU_INFO
<span style="cursor: default" title="CPU使用：{$core_details_str}
系统负载：1分钟：{$sys_load_1min} 5分钟：{$sys_load_5min} 15分钟：{$sys_load_15min}
">CPU: {$overall_cpu_usage} %</span>
CPU_INFO;
}
// 获取内存信息
private static function mem_info(){
if (false === ($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);
$mem_info['memTotal'] = round($buf[1][0]/1024, 2);
$mem_info['memFree'] = round($buf[2][0]/1024, 2);
$mem_info['memBuffers'] = round($buffers[1][0]/1024, 2);
$mem_info['memCached'] = round($buf[3][0]/1024, 2);
$mem_info['memUsed'] = $mem_info['memTotal']-$mem_info['memFree'];
$mem_info['memPercent'] = (floatval($mem_info['memTotal'])!=0)?round($mem_info['memUsed']/$mem_info['memTotal']*100,2):0;
$mem_info['memRealUsed'] = $mem_info['memTotal'] - $mem_info['memFree'] - $mem_info['memCached'] - $mem_info['memBuffers']; //真实内存使用
$mem_info['memRealFree'] = $mem_info['memTotal'] - $mem_info['memRealUsed']; //真实空闲
$mem_info['memRealPercent'] = (floatval($mem_info['memTotal'])!=0)?round($mem_info['memRealUsed']/$mem_info['memTotal']*100,2):0; //真实内存使用率
$mem_info['memCachedPercent'] = (floatval($mem_info['memCached'])!=0)?round($mem_info['memCached']/$mem_info['memTotal']*100,2):0; //Cached内存使用率
$mem_info['swapTotal'] = round($buf[4][0]/1024, 2);
$mem_info['swapFree'] = round($buf[5][0]/1024, 2);
$mem_info['swapUsed'] = round($mem_info['swapTotal']-$mem_info['swapFree'], 2);
$mem_info['swapPercent'] = (floatval($mem_info['swapTotal'])!=0)?round($mem_info['swapUsed']/$mem_info['swapTotal']*100,2):0;
$mem_per = round($mem_info['memRealUsed'] / $mem_info['memTotal'] * 100, 2);
return <<<MEM_INFO
<span style="cursor: default" title="内存占用：{$mem_info['memRealUsed']} MB / {$mem_info['memTotal']} MB
交换空间占用：{$mem_info['swapUsed']} MB / {$mem_info['swapTotal']} MB
">内存: {$mem_per} %</span>
MEM_INFO;
}
// 获取磁盘信息
private static function disk_info(){
$dt = round(@disk_total_space(".")/(1024*1024*1024), 2); //总
$df = round(@disk_free_space(".")/(1024*1024*1024), 2); //可用
$du = $dt-$df; //已用
$disk_use = round($du / $dt * 100, 2);
return <<<DISK_INFO
<span style="cursor: default" title="已用硬盘空间：{$du} GB / {$dt} GB">硬盘: {$disk_use} %</span>
DISK_INFO;
}
// 获取 系统信息
private static function sys_info()
{
if (false === ($str = @file("/proc/uptime"))) return false;
$str = explode(" ", implode("", $str));
$str = trim($str[0]);
$min = $str / 60;
$hours = $min / 60;
$days = floor($hours / 24);
$hours = floor($hours - ($days * 24));
$min = floor($min - ($days * 60 * 24) - ($hours * 60));
if ($days !== 0) $uptime = $days."天";
if ($hours !== 0) $uptime .= $hours."小时";
$uptime .= $min."分钟";
$php['version'] = PHP_VERSION;
$php['sapi'] = php_sapi_name();
$php['mem_max'] = get_cfg_var('memory_limit');
$php['up_max'] = get_cfg_var('upload_max_filesize');
return <<<SYS_INFO
服务器信息:
<br>持续运行：{$uptime}，Web服务器：{$_SERVER['SERVER_SOFTWARE']}，PHP 版本：{$php['version']}，SAPI 接口：{$php['sapi']}，PHP内存限制：{$php['mem_max']}，上传文件限制：{$php['up_max']}
SYS_INFO;
}
}优先使用Github上面的吧，万一那天我修复一些问题，可能只会修改Github上面的仓库的内容而忘记修改这篇文章。
当然，我希望以后不会出现问题。
使用方法
将GitHub上面的Plugin.php或者这个页面的Plugin.php内容保存下载，放到Typecho的插件目录usr/plugins/下的LinuxInfo文件夹（需要自己创建），例如：typecho/usr/plugins/LinuxInfo/Plugin.php，进入Typecho后台启用插件即可。
默认不显示系统详细信息，需要自己勾选显示才会展示。
不过，需要注意的是，这个插件仅可用于Linux系统，Windows系统不适用。谁用Windows做服务器啊？！！不会吧不会吧？
最后还是要感谢一下两双筷子写出来这个有意思的插件。
