首先安装 Dockercurl -sSL https://get.docker.com/ | shsystemctl start dockersystemctl enable dockersystemctl enable dockerdocker run -d -p 6688:80 ilemonrain/html5-speedtest:alpine搭建完成打开 http://你VPS的IP:6688 即可如果CentOS 7打不开，需要打开防火墙端口，或者关掉防火墙打开6688端口firewall-cmd --zone=public --add-port=6688/tcp --permanent关闭防火墙systemctl stop firewalld.service systemctl disable firewalld.service 

方法一：完全随机颜色<?php function randColor(){ $colors = array(); for($i = 0;$i<6;$i++){ $colors[] = dechex(rand(0,15)); } return implode('',$colors); } ?>使用颜色方法：<?php echo '<span style="color: #'.randColor().'">随机颜色：#'.randColor().'</span>';?>方法二：随机挑选数组里的颜色<?php function randColor(){ $colors=array('5CB85C','428BCA','FF6600','D9534F','B37333','00ABA9'); $show_color = array_rand($colors, 1); return $colors[$show_color]; } ?>颜色使用方法同上：<?php echo '<span style="color: #'.randColor().'">随机颜色：#'.randColor().'</span>';?>

效果图：代码如下:function krc2lrc($krc_content, $glue = "n") { $enKey = array(64, 71, 97, 119, 94, 50, 116, 71, 81, 54, 49, 45, 206, 210, 110, 105); $krc_content = substr($krc_content, 4); $len = strlen($krc_content); $krc_compress = ''; for ($k = 0; $k < $len; $k++) { $krc_compress .= chr(ord($krc_content[$k]) ^ $enKey[$k % 16]); } $krc_text = gzuncompress($krc_compress); return $krc_text; preg_match_all("/[(ar|ti|offset):(.+)]/", $krc_text, $matches); $lrc_text = implode($glue, $matches[0]) . $glue; preg_match_all("/[(d{0,8}),(d{0,8})](.+)/", $krc_text, $matches); unset($krc_text, $krc_compress, $krc_content, $enKey); if (!empty($matches[1])) { foreach($matches[1] as $k => $v) { list($seconds, $millis) = explode('.', $v / 1000); $lrc_time = date('i:s', 1388534400 + $seconds) . '.' . substr($millis, 0, 2); $lrc_cont = preg_replace("/<d{1,8},d{1,8},d{1,8}>/", '', $matches[3][$k]); $lrc_text .= "[{$lrc_time}]{$lrc_cont}{$glue}"; } } return $lrc_text; }简单的示例:$content = file_get_contents("1.krc"); echo krc2lrc($content,'<br/>');