探讨如何在PHP开启gzip页面压缩实例

2015-01-24信息快讯网

本篇文章是对PHP开启gzip页面压缩实例进行了详细的分析介绍,需要的朋友参考下

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; 
} 
?>

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