PHP HTML Output Compressor

PHP HTML Output Compressor

<?php
ob_start("html_compress");
ob_implicit_flush(1);

function html_compress($html){

	$html = preg_replace('/<!-(.*)->/Uis', '', $html);
	$html = preg_replace('/[\r\n\t\s]+/s', ' ', $html);
	$html = preg_replace('#/\*.*?\*/#', ' ', $html);
	$html = preg_replace('/^\s+/', ' ', $html);
	$html = preg_replace('/ +/', ' ', $html);
	$html = preg_replace('/> +</', '><', $html);
	$html = preg_replace('/[[:blank:]]+/', ' ', $html);
	$html = preg_replace('/<!--[if IE]>/', $html, $html);
	$html = preg_replace('/<![endif]-->/', $html, $html);

	$html = preg_replace_callback("/(&#[0-9]+;)/", function($m){
		return mb_convert_encoding($m[1], "UTF-8", "HTML-ENTITIES");
	}, $html);

	$html = preg_replace_callback("/([a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4})/", function($m){
		return encode2($m[1]);
	}, $html); 

	$HTTP_ACCEPT_ENCODING = $_SERVER["HTTP_ACCEPT_ENCODING"];
	if(headers_sent()) {
		$encoding = false;
	}elseif( strpos($HTTP_ACCEPT_ENCODING, 'x-gzip') !== false ) {
		$encoding = 'x-gzip';
	}elseif( strpos($HTTP_ACCEPT_ENCODING,'gzip') !== false ) {
		$encoding = 'gzip';
	}else{
		$encoding = false;
	}

	return $html;
	ob_end_clean();
}
?>