我在http://www.intert3chmedia.net/2011/12/minify-html-javascript-css-without.html找到了这个脚本。它应该缩小（不像类名所示压缩）HTML：
<?php
class WP_HTML_Compression
{
// Settings
protected $compress_css = true;
protected $compress_js = true;
protected $info_comment = true;
protected $remove_comments = true;
// Variables
protected $html;
public function __construct($html)
{
if (!empty($html))
{
$this->parseHTML($html);
}
}
public function __toString()
{
return $this->html;
}
protected function bottomComment($raw, $compressed)
{
$raw = strlen($raw);
$compressed = strlen($compressed);
$savings = ($raw-$compressed) / $raw * 100;
$savings = round($savings, 2);
return '<!--HTML compressed, size saved '.$savings.'%. From '.$raw.' bytes, now '.$compressed.' bytes-->';
}
protected function minifyHTML($html)
{
$pattern = '/<(?<script>script).*?<\/script\s*>|<(?<style>style).*?<\/style\s*>|<!(?<comment>--).*?-->|<(?<tag>[\/\w.:-]*)(?:".*?"|\'.*?\'|[^\'">]+)*>|(?<text>((<[^!\/\w.:-])?[^<]*)+)|/si';
preg_match_all($pattern, $html, $matches, PREG_SET_ORDER);
$overriding = false;
$raw_tag = false;
// Variable reused for output
$html = '';
foreach ($matches as $token)
{
$tag = (isset($token['tag'])) ? strtolower($token['tag']) : null;
$content = $token[0];
if (is_null($tag))
{
if ( !empty($token['script']) )
{
$strip = $this->compress_js;
}
else if ( !empty($token['style']) )
{
$strip = $this->compress_css;
}
else if ($content == '<!--wp-html-compression no compression-->')
{
$overriding = !$overriding;
// Don't print the comment
continue;
}
else if ($this->remove_comments)
{
if (!$overriding && $raw_tag != 'textarea')
{
// Remove any HTML comments, except MSIE conditional comments
$content = preg_replace('/<!--(?!\s*(?:\[if [^\]]+]|<!|>))(?:(?!-->).)*-->/s', '', $content);
}
}
}
else
{
if ($tag == 'pre' || $tag == 'textarea')
{
$raw_tag = $tag;
}
else if ($tag == '/pre' || $tag == '/textarea')
{
$raw_tag = false;
}
else
{
if ($raw_tag || $overriding)
{
$strip = false;
}
else
{
$strip = true;
// Remove any empty attributes, except:
// action, alt, content, src
$content = preg_replace('/(\s+)(\w++(?<!\baction|\balt|\bcontent|\bsrc)="")/', '$1', $content);
// Remove any space before the end of self-closing XHTML tags
// JavaScript excluded
$content = str_replace(' />', '/>', $content);
}
}
}
if ($strip)
{
$content = $this->removeWhiteSpace($content);
}
$html .= $content;
}
return $html;
}
public function parseHTML($html)
{
$this->html = $this->minifyHTML($html);
if ($this->info_comment)
{
$this->html .= "\n" . $this->bottomComment($html, $this->html);
}
}
protected function removeWhiteSpace($str)
{
$str = str_replace("\t", ' ', $str);
$str = str_replace("\n", '', $str);
$str = str_replace("\r", '', $str);
while (stristr($str, ' '))
{
$str = str_replace(' ', ' ', $str);
}
return $str;
}
}
function wp_html_compression_finish($html)
{
return new WP_HTML_Compression($html);
}
function wp_html_compression_start()
{
ob_start('wp_html_compression_finish');
}
add_action('get_header', 'wp_html_compression_start');
?>
我的HTML在顶部有IE条件，如下所示：
<!--[if lt IE 7 ]><html class="ie ie6" lang="en"><![endif]-->
<!--[if IE 7 ]><html class="ie ie7" lang="en"><![endif]-->
<!--[if IE 8 ]><html class="ie ie8" lang="en"><![endif]-->
<!--[if (gte IE 9)|!(IE)]><!--><html lang="en"><!--<![endif]-->
IE条件下的所有内容都正确缩小。结果是一长串的HTML。问题是IE条件之上的所有内容似乎都没有缩小。回车仍然保留。任何想法有什么不对？
答案 0 :(得分：3)
自定义方法怎么样？
public static function html_compress($buffer)
{
$chunks = preg_split( '/(<pre.*?\/pre>)/ms', $buffer, -1, PREG_SPLIT_DELIM_CAPTURE );
$buffer = '';
$replace = array(
'#[\n\r\t\s]+#' => ' ', // remove new lines & tabs
'#>\s{2,}<#' => '><', // remove inter-tag whitespace
'#\/\*.*?\*\/#i' => '', // remove CSS & JS comments
'#<!--(?![\[>]).*?-->#si' => '', // strip comments, but leave IF IE (<!--[...]) and "<!-->""
'#\s+<(html|head|meta|style|/style|title|script|/script|/body|/html|/ul|/ol|li)#' => '<$1', // before those elements, whitespace is dumb, so kick it out!!
'#\s+(/?)>#' => '$1>', // just before the closing of " >"|" />"
'#class="\s+#'=> 'class="', // at times, there is whitespace before class=" className"
'#(script|style)>\s+#' => '$1>', // <script> var after_tag_has_whitespace = 'nonsens';
);
$search = array_keys($replace);
foreach ( $chunks as $c )
{
if ( strpos( $c, '<pre' ) !== 0 )
{
$c = preg_replace($search, $replace, $c);
}
$buffer .= $c;
}
return $buffer;
}
答案 1 :(得分：2)
该网站刚刚接受了代码并将其重命名。以某种方式使用“他们的”代码比使用实际的插件更好？哦，好吧。
有一个适用于WordPress和标准PHP的新版本： http://www.svachon.com/blog/html-minify/
答案 2 :(得分：1)
此处还有其他问题。
我将这个“类”缩减为单页PHP脚本（将任何$ this-＆gt;调用替换为true（在ivars的情况下）或静态函数调用。
然后我使用长HTML输入运行了各种测试，并尝试使用条件注释，包括条件＆lt; html＆gt;中的复制粘贴。您之前拥有的标签。每次结果都是单行输出。
总之，有一些可能性：
<!--wp-html-compression no compression-->插入文档的该部分为什么不在minifyHTML（$ html）方法的开头插入error_log($html);（或类似的）来查看原始HTML的样子。我的猜测是，结果会告诉你它为什么不起作用。 （我猜你也可以return $html;。）
EDIT --- 这是我的“脚本”，请注意保留条件注释，并删除非条件HTML注释。而且我根本不打扰行格式，因为它只是你提供的原始课程中的黑客工作。
<?php
$html = <<<EOF
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!--[if lt IE 7 ]><html class="ie ie6" lang="en"><![endif]-->
<!--[if IE 7 ]><html class="ie ie7" lang="en"><![endif]-->
<!--[if IE 8 ]><html class="ie ie8" lang="en"><![endif]-->
<!--[if (gte IE 9)|!(IE)]><!--><html lang="en"><!--<![endif]-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Page Title</title>
<meta name="description" content="desc" />
<meta name="keywords" content="c" />
<meta name="robots" content="INDEX,FOLLOW" />
<link rel="icon" href="http://www.stackoverflow.com/" type="image/x-icon" />
<link rel="shortcut icon" href="http://www.stackoverflow.com/" type="image/x-icon" />
<!--[if lt IE 7]>
<script type="text/javascript">
//<![CDATA[
var BLANK_URL = '';
//]]>
</script>
<![endif]-->
<!--[if lt IE 8]>
<style type="text/css">
.single-call-to-action .action-text {
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000, endColorstr=#66000000);
}
#PaypalSideBar a img {
left: 0 !important;
top: 0 !important;
width: 182px !important;
height: 96px !important;
}
</style>
<![endif]-->
<!--[if lt IE 9]>
<style type="text/css">
.single-call-to-action .action-text {
-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000, endColorstr=#66000000)";
}
</style>
<![endif]-->
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript">jQuery.noConflict();</script>
<link href="//fonts.googleapis.com/css?family=Marck+Script" rel="stylesheet" type="text/css">
<link rel="stylesheet" type="text/css" href="http://www.stackoverflow.com/test.css" media="all" />
<!--[if lt IE 8]><link rel="stylesheet" type="text/css" href="http://www.stackoverflow.com/test.css" media="all" /><![endif]-->
<!--[if lt IE 7]><script type="text/javascript" src="http://www.stackoverflow.com/test.js"></script><script type="text/javascript" src="http://www.stackoverflow.com/test.js"></script><![endif]-->
<script type="text/javascript">
//<![CDATA[
Mage.Cookies.path = '/';
//]]>
</script>
<script type="text/javascript">
//<![CDATA[
optionalZipCountries = ["US"];
//]]>
</script>
<!-- BEGIN GOOGLE ANALYTICS CODEs -->
<script type="text/javascript">
//<![CDATA[
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-x']);
_gaq.push(['_setDomainName', 'http://www.stackoverflow.com/']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
//]]>
</script>
<!-- END GOOGLE ANALYTICS CODE -->
<script type="text/javascript">
//<![CDATA[
window.HDUSeed = 'x';
window.HDUSeedIntId = setInterval(function() {
if (document.observe) {
document.observe('dom:loaded', function() {
for (var i = 0; i < document.forms.length; i++) {
if (document.forms[i].getAttribute('action') && document.forms[i].getAttribute('action').match('contacts/index/post')) {
var el = document.createElement('input');
el.type = ('hidden');
el.name = 'hdu_seed';
el.value = window.HDUSeed;
document.forms[i].appendChild(el);
}
}
});
clearInterval(window.HDUSeedIntId)
}
}, 100)
//]]>
</script>
<script type="text/javascript">//<![CDATA[
var Translator = new Translate([]);
//]]></script><meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge"/>
<style type="text/css">
/*default iteaser*/
#TT2ILTbox {
background-color: #f3f3f3;
border: 1px solid #d2d2d2;
padding: 10px;
text-align: center;
width: 280px;
margin-bottom: 10px;
margin-top: 10px;
}
#TT2ILTbox h2 {
font-size: 12px;
font-weight: bold;
margin: 5px 0 5px 0;
}
#TT2ILTcount-line * {
font-size: 11px;
}
#TT2ILTcount-line strong {
font: bold 11px Arial;
}
#TT2ILTcount-line p {
margin: 5px 0 5px 0;
}
#TT2ILTbutton-holder {
display: -moz-box !important;
display: block;
height: 31px;
text-align: center;
}
a.TT2ILTbutton, a.TT2ILTbutton span {
background-color: #fa002f;
}
.TT2ILTbutton * {
font: bold 12px Arial;
}
a.TT2ILTbutton {
background-image: url('http://static.www.turnto.com/tra2/images/iteaser/1/button-right.png');
background-repeat: no-repeat;
background-position: top right;
display: block;
height: 31px;
margin-right: 6px;
padding-right: 16px;
text-decoration: none;
color: white;
}
a.TT2ILTbutton span {
background-image: url('http://static.www.turnto.com/tra2/images/iteaser/1/button-left.png');
background-repeat: no-repeat;
display: block;
line-height: 22px;
padding: 2px 0 7px 18px;
}
a.TurnToIteaSee {
font-size: 11px;
text-decoration: none;
color: #000;
cursor: pointer;
}
</style>
</head>
<body class=" cms-index-index cms-home">
<div class="wrapper">
<noscript>
<div class="global-site-notice noscript">
<div class="notice-inner">
<p>
<strong>JavaScript seems to be disabled in your browser.</strong><br />
You must have JavaScript enabled in your browser to utilize the functionality of this website. </p>
</div>
</div>
</noscript>
<div class="page">
</div>
</div>
</body>
</html>
EOF;
function removeWhiteSpace($str)
{
$str = str_replace("\t", ' ', $str);
$str = str_replace("\n", '', $str);
$str = str_replace("\r", '', $str);
while (stristr($str, ' '))
{
$str = str_replace(' ', ' ', $str);
}
return $str;
}
$pattern = '/<(?<script>script).*?<\/script\s*>|<(?<style>style).*?<\/style\s*>|<!(?<comment>--).*?-->|<(?<tag>[\/\w.:-]*)(?:".*?"|\'.*?\'|[^\'">]+)*>|(?<text>((<[^!\/\w.:-])?[^<]*)+)|/si';
preg_match_all($pattern, $html, $matches, PREG_SET_ORDER);
$overriding = false;
$raw_tag = false;
// Variable reused for output
$html = '';
foreach ($matches as $token)
{
$tag = (isset($token['tag'])) ? strtolower($token['tag']) : null;
$content = $token[0];
if (is_null($tag))
{
if ( !empty($token['script']) )
{
$strip = true;
}
else if ( !empty($token['style']) )
{
$strip = true;
}
else if ($content == '<!--wp-html-compression no compression-->')
{
$overriding = !$overriding;
// Don't print the comment
continue;
}
else if (true)
{
if (!$overriding && $raw_tag != 'textarea')
{
// Remove any HTML comments, except MSIE conditional comments
$content = preg_replace('/<!--(?!\s*(?:\[if [^\]]+]|<!|>))(?:(?!-->).)*-->/s', '', $content);
}
}
}
else
{
if ($tag == 'pre' || $tag == 'textarea')
{
$raw_tag = $tag;
}
else if ($tag == '/pre' || $tag == '/textarea')
{
$raw_tag = false;
}
else
{
if ($raw_tag || $overriding)
{
$strip = false;
}
else
{
$strip = true;
// Remove any empty attributes, except:
// action, alt, content, src
$content = preg_replace('/(\s+)(\w++(?<!\baction|\balt|\bcontent|\bsrc)="")/', '$1', $content);
// Remove any space before the end of self-closing XHTML tags
// JavaScript excluded
$content = str_replace(' />', '/>', $content);
}
}
}
if ($strip)
{
$content = removeWhiteSpace($content);
}
$html .= $content;
}
echo $html;