PHP實現gzip頁面壓縮方法

　　示例一（用php的內置壓縮函數）

<?PHP
if(Extension_Loaded(’zlib’)) Ob_Start(’ob_gzhandler’);
Header("Contenttype: text/html");
?>
<!DOCTYPE html PUBLIC "//WC//DTD XHTML Transitional//EN" "
<html xmlns="
<head>
<meta httpequiv="ContentType" content="text/html; charset=gb" />
<title>無標題文檔</title>
</head>
<body>
<?php
for($i=;$i<;$i++){
echo ’Hello World!’;
}
?>
</body>
</html>
<?PHP
if(Extension_Loaded(’zlib’)) Ob_End_Flush();
?>

示例二（自寫函數）

<?php ob_start(’ob_gzip’); ?>

<!DOCTYPE html PUBLIC "//WC//DTD XHTML Transitional//EN" "
<html xmlns="
<head>
<meta httpequiv="ContentType" content="text/html; charset=gb" />
<title>無標題文檔</title>
</head>

<body>
</body>
</html>

<?php
ob_end_flush();
//壓縮函數
function ob_gzip($content){
if(!headers_sent()&&extension_loaded("zlib")&&strstr($_SERVER["HTTP_ACCEPT_ENCODING"]"gzip")){
$content = gzencode($content);
header("ContentEncoding: gzip");
header("Vary: AcceptEncoding");
header("ContentLength: "strlen($content));
}
return $content;
}
?>

From:http://tw.wingwit.com/Article/program/PHP/201311/20896.html