emlog 无插件实现网站源码压缩 二
之前分享过《emlog 无插件实现网站源码压缩》,此方法需要修改模板中的相关代码,当切换模板后失效,每次都要修改模板,有些麻烦,所以提供以下代码来解决此问题。
在 include\lib\function.base.php 新增代码
function emHTMLCompression($html)
{
$chunks = preg_split('/(<!--<nocompress>-->.*?<!--<\/nocompress>-->|<nocompress>.*?<\/nocompress>|<pre.*?\/pre>|<textarea.*?\/textarea>|<script.*?\/script>)/msi', $html, -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)) { // JS代码,包含“//”注释的,单行代码不处理
$tmps = preg_split('/(\r|\n)/ms', $c, -1, PREG_SPLIT_NO_EMPTY);
$c = '';
foreach ($tmps as $tmp) {
if (strpos($tmp, '//') !== false) { // 对含有“//”的行做处理
if (substr(trim($tmp), 0, 2) == '//') { // 开头是“//”的就是注释
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); // 不是字符串内的就是注释
break;
}
}
}
$c .= $tmp;
}
}
$c = preg_replace('/[\\n\\r\\t]+/', ' ', $c); // 清除换行符,清除制表符
$c = preg_replace('/\\s{2,}/', ' ', $c); // 清除额外的空格
$c = preg_replace('/>\\s</', '> <', $c); // 清除标签间的空格
$c = preg_replace('/\\/\\*.*?\\*\\//i', '', $c); // 清除 CSS & JS 的注释
$c = preg_replace('/<!--[^!]*-->/', '', $c); // 清除 HTML 的注释
$compress .= $c;
}
return $compress;
}
修改 include\lib\view.php 代码
public static function output() {
$content = ob_get_clean();
if (Option::get('isgzipenable') == 'y' && function_exists('ob_gzhandler')) {
ob_start('ob_gzhandler');
} else {
ob_start();
}
echo $content;
ob_end_flush();
exit;
}
修改为
public static function output()
{
$content = ob_get_clean();
$initial = strlen($content);
if (Option::get('isgzipenable') == 'y' && function_exists('ob_gzhandler')) {
ob_start('ob_gzhandler');
} else {
ob_start();
}
$content_out = $content;
$final = strlen($content_out);
$savings = ($initial - $final) / $initial * 100;
$savings = round($savings, 2);
$content_out .= PHP_EOL . "<!--压缩前的大小: $initial bytes; 压缩后的大小: $final bytes; 节约:$savings% -->";
echo $content_out;
ob_end_flush();
exit;
}
以上部分代码源自菜鸟建站,感谢。