php压缩html函数，利于SEO
/**
* 压缩html : 清除换行符,清除制表符,去掉注释标记
* @param $string
* @return 压缩后的$string
* */
function compress_html($string) {
$string = str_replace("\r\n", '', $string); //清除换行符
$string = str_replace("\n", '', $string); //清除换行符
$string = str_replace("\t", '', $string); //清除制表符
$pattern = array("/> *([^ ]*) *</", //去掉注释标记
"/[\s]+/", "/<!--[^!]*-->/", "/\" /", "/ \"/", "'/\*[^*]*\*/'");
$replace = array(">\\1<", " ", "", "\"", "\"", "");
return preg_replace($pattern, $replace, $string);
}
