探討如何在PHP開啟gzip頁面壓縮實(shí)例

2024-05-04 23:10:33

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供稿：網(wǎng)友

示例一（用php的內(nèi)置壓縮函數(shù)）：

復(fù)制代碼代碼如下:

<?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>無標(biāo)題文檔</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（自寫函數(shù)）：

復(fù)制代碼代碼如下:

<?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>無標(biāo)題文檔</title>
</head>
<body>
</body>
</html>
<?php
ob_end_flush();
//壓縮函數(shù)
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;
}
?>