typecho中添加HTML代码压缩功能

为什么要压缩HTML

主要是把 HTML 代码格式化为当行,去除回车注释等无效字符串以增加网页传速效率. Nginx , Apache 有类似的模块可以直接输出类似的单行 HTML ps:摘自网络

代码

需要修改两个地方，function.php，footer.php，处理方法放在function.php文件中，方便全局调用，

/**
 * 压缩HTML代码
 *
 * @param [type] $html_source
 * @return void
 * @author wanghongbin
 * @email info@whongbin.cn
 */
function compressHtml($html_source) 
    {
        $chunks = preg_split('/(<!--<nocompress>-->.*?<!--<\/nocompress>-->|<nocompress>.*?<\/nocompress>|<pre.*?\/pre>|<textarea.*?\/textarea>|<script.*?\/script>)/msi', $html_source, -1, PREG_SPLIT_DELIM_CAPTURE);
        $compress = '';
        foreach ($chunks as $c) {
            if (strtolower(substr($c, 0, 19)) == '<!--<nocompress>-->') {
                $c = substr($c, 19, strlen($c) - 19 - 20);
                $compress .= $c;
                continue;
            } else if (strtolower(substr($c, 0, 12)) == '<nocompress>') {
                $c = substr($c, 12, strlen($c) - 12 - 13);
                $compress .= $c;
                continue;
            } else if (strtolower(substr($c, 0, 4)) == '<pre' || strtolower(substr($c, 0, 9)) == '<textarea') {
                $compress .= $c;
                continue;
            } else if (strtolower(substr($c, 0, 7)) == '<script' && strpos($c, '//') != false && (strpos($c, "\r") !== false || strpos($c, "\n") !== false)) {
                $tmps = preg_split('/(\r|\n)/ms', $c, -1, PREG_SPLIT_NO_EMPTY);
                $c = '';
                foreach ($tmps as $tmp) {
                    if (strpos($tmp, '//') !== false) {
                        if (substr(trim($tmp), 0, 2) == '//') {
                            continue;
                        }
                        $chars = preg_split('//', $tmp, -1, PREG_SPLIT_NO_EMPTY);
                        $is_quot = $is_apos = false;
                        foreach ($chars as $key => $char) {
                            if ($char == '"' && $chars[$key - 1] != '\\' && !$is_apos) {
                                $is_quot = !$is_quot;
                            } else if ($char == '\'' && $chars[$key - 1] != '\\' && !$is_quot) {
                                $is_apos = !$is_apos;
                            } else if ($char == '/' && $chars[$key + 1] == '/' && !$is_quot && !$is_apos) {
                                $tmp = substr($tmp, 0, $key);
                                break;
                            }
                        }
                    }
                    $c .= $tmp;
                }
            }
            $c = preg_replace('/[\\n\\r\\t]+/', ' ', $c);
            $c = preg_replace('/\\s{2,}/', ' ', $c);
            $c = preg_replace('/>\\s</', '> <', $c);
            $c = preg_replace('/\\/\\*.*?\\*\\//i', '', $c);
            $c = preg_replace('/<!--[^!]*-->/', '', $c);
            $compress .= $c;
        }
        return $compress;
    }

调用方法放在footer.php文件中，实现效果 ps:放在html结束标签之后

<?php $html_source = ob_get_contents(); ob_clean(); print compressHtml($html_source); ob_end_flush(); ?>

兼容代码

如果代码中有一些地方压缩后不被解析，出现不兼容问题，可以使用使用下面方法自行修改插件代码来保证这些不兼容的代码可以运行

<!-- <nocompress > -->
不兼容代码
<!-- </nocompress > -->
<nocompress >
不兼容代码
</nocompress >