【PHP】PHP获取服务器状态 <?php function get_server_status() { $fp = popen('top -b -n 2 | grep -E "^(Cpu|Mem|Tasks)"', "r");//获取某一时刻系统cpu和内存使用情况 $rs = ""; while (!feof($fp)) { $rs .= fread($fp, 1024); } pclose($fp); $sys_info = explode("\n", $rs); $tast_info = explode(",", $sys_info[3]);//进程 数组 $cpu_info = explode(",", $sys_info[4]); //CPU占有量 数组 $mem_info = explode(",", $sys_info[5]); //内存占有量 数组 //正在运行的进程数 $tast_running = trim(trim($tast_info[1], 'running')); //CPU占有量 $cpu_usage = trim(trim($cpu_info[0], 'Cpu(s): '), '%us'); //百分比 //内存占有量 $mem_total = trim(trim($mem_info[0], 'Mem: '), 'k total'); $mem_used = trim($mem_info[1], 'k used'); $mem_usage = round(100 * intval($mem_used) / intval($mem_total), 2); //百分比 /*硬盘使用率 begin*/ $fp = popen('df -lh | grep -E "^(/)"', "r"); $rs = fread($fp, 1024); pclose($fp); $rs = preg_replace("/\s{2,}/", ' ', $rs); //把多个空格换成 “_” $hd = explode(" ", $rs); $hd_avail = trim($hd[3], 'G'); //磁盘可用空间大小 单位G $hd_usage = trim($hd[4], '%'); //挂载点 百分比 /*硬盘使用率 end*/ //检测时间 $fp = popen("date +\"%Y-%m-%d %H:%M\"", "r"); $rs = fread($fp, 1024); pclose($fp); $detection_time = trim($rs); $result = [ 'cpu_usage' => $cpu_usage, 'mem_usage' => $mem_usage, 'hd_avail' => $hd_avail, 'hd_usage' => $hd_usage, 'tast_running' => $tast_running, 'detection_time' => $detection_time ]; return $result; }

【PHP】PHP获取网页里的所有图片 <?php $new_url = []; $url="网页地址"; //file_get_contents() 函数把整个文件读入一个字符串中 $string=file_get_contents($url); //preg_match_all函数进行全局正则表达式匹配。 preg_match_all("/<img[^>]*>/i", $string,$matches); //去除数组中重复的值 $new_arr=array_unique($matches[0]); foreach($new_arr as $key){ //查找img标签内的src内容 preg_match_all('/<img.*?src="(.*?)".*?>/is',$key,$match); //根据网页图片后缀可以灵活修改 $one = str_replace('?v1', '', $match[1][0]); //插入数组 array_push($new_url,$url.$one); } //下载并保存图片 function download($downurl, $path = 'images/'){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $downurl); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30); $file = curl_exec($ch); curl_close($ch); $filename = pathinfo($downurl, PATHINFO_BASENAME); $resource = fopen($path . $filename, 'a'); fwrite($resource, $file); fclose($resource); } //循环下载 foreach ( $new_url as $url ) { download($url); } ?>