如何在PHP开启gzip页面压缩实例

2015-06-28 00:00作者：网管联盟

示例一（用php的内置压缩函数）：

<?PHP
if(Extension_Loaded('zlib')) Ob_Start('ob_gzhandler');
Header(&Content-type: text/html&);
?>
<!DOCTYPE html PUBLIC &-//W3C//DTD XHTML 1.0 Transitional//EN& &http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd&>
<html xmlns=&http://www.w3.org/1999/xhtml&>
<head>
<meta http-equiv=&Content-Type& content=&text/html; charset=gb2312& />
<title>无标题文档</title>
</head>
<body>
<?php
for($i=0;$i<10000;$i++){
echo 'Hello World!';
}
?>
</body>
</html>
<?PHP
if(Extension_Loaded('zlib')) Ob_End_Flush();
?>

示例二（自写函数）：

<?php ob_start('ob_gzip'); ?>

<!DOCTYPE html PUBLIC &-//W3C//DTD XHTML 1.0 Transitional//EN& &http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd&>
<html xmlns=&http://www.w3.org/1999/xhtml&>
<head>
<meta http-equiv=&Content-Type& content=&text/html; charset=gb2312& />
<title>无标题文档</title>
</head>

<body>
</body>
</html>

<?php
ob_end_flush();
//压缩函数
function ob_gzip($content){
if(!headers_sent()&&extension_loaded(&zlib&)&&strstr($_SERVER[&HTTP_ACCEPT_ENCODING&],&gzip&)){
$content = gzencode($content,9);
header(&Content-Encoding: gzip&);
header(&Vary: Accept-Encoding&);
header(&Content-Length: &.strlen($content));
}
return $content;
}
?>