php 多语言切换

blueice

　　目录结构：

　　//============================================
　　文件内容：


　　/include/language.php

<?php
$languages = array ();
$languages ['zh-cn'] ["name"] = "china";
$languages ["zh-cn"] ["image"] = "flag1.jpg";
$languages ["en"] ["name"] = "english";
$languages ["en"] ["image"] = "flag2.jpg";
class Language {
public $language_area;
public $language_country;
public $language_dir;
public $dir;
public function __construct() {
$this->dir = str_replace ( "\\", "/", dirname ( __FILE__ ) ) . "/language/";
$this->initDefaultLanguage ();
if (empty ( $this->language_country ) && ! empty ( $this->language_area )) {
$this->language_country = substr ( $this->language_area, 0, strpos ( $this->language_area, "-" ) );
}
$this->initLanguageDir ();
}
/*
取得语言文件的绝对路径
*/
public function getFileDir($file) {
$dir = $this->dir;
if (file_exists ( $this->getLanguageDir () . $file )) {
return $this->getLanguageDir () . $file;
} else if (file_exists ( $dir . $this->language_area . "/" . $file )) {
return $dir . $this->language_area . "/" . $file;
} else if (file_exists ( $dir . $this->language_country . "/" . $file )) {
return $dir . $this->language_country . "/" . $file;
} else if (file_exists ( $dir . "en/" . $file )) {
return $dir . "en/" . $file;
} else {
return false;
}
}
/*
取得当前使用语言的文件夹
*/
public function getLanguageDir() {
return $this->language_dir;
}
/*
初始化语言文件夹
*/
private function initLanguageDir() {
$dir = $this->dir;
if (file_exists ( $dir . $this->language_area ) && ! empty ( $this->language_area )) {
$this->language_dir = $dir . $this->language_area . "/";
} else if (file_exists ( $dir . $this->language_country ) && ! empty ( $this->language_country )) {
$this->language_dir = $dir . $this->language_country . "/";
} else {
$this->language_dir = $dir . "en/";
}
}
/*
初始化默认语言
*/
public function initDefaultLanguage() {
if ($this->getCookieLanguage ()) {
return;
}
$language = $_SERVER ['HTTP_ACCEPT_LANGUAGE'];
preg_match_all ( "/[\w-]+/", $language, $language );
$this->language_area = $language [0] [0];
@$this->language_country = $language [0] [1];
$this->setCookieLanguage ();
}
/*
从cookie中导入语言种类
*/
public function getCookieLanguage() {
if (! @empty ( $_COOKIE ['lang'] )) {
$language = $_COOKIE ['lang'];
if (strpos ( $language, "-" )) {
$this->language_area = $language;
} else {
$this->language_country = $language;
}
return true;
}
return false;
}
/*
把当前的语言种类放到cookie中
*/
public function setCookieLanguage($lang = "") {
if (empty ( $lang )) {
$lang = $this->language_area;
}
if (empty ( $lang )) {
$lang = $this->language_country;
}
if (empty ( $lang )) {
return false;
}
setcookie ( "lang", $lang, time () + 365 * 24 * 3600, "/", $this->getDomain () );
return true;
}
public function getDomain() {
if (empty ( $this->domain )) {
$domain = $_SERVER ['SERVER_NAME'];
if (strcasecmp ( $domain, "localhost" ) === 0) {
$this->domain = $domain;
return $this->domain;
}
if (preg_match ( "/^(\d+\.){3}\d+$/", $domain, $domain_temp )) {
$this->domain = $domain_temp [0];
return $this->domain;
}
preg_match_all ( "/\w+\.\w+$/", $domain, $domain );
$this->domain = $domain [0] [0];
return $this->domain;
} else {
return $this->domain;
}
}
}
?>
 　　/include/language/zh-cn/language.php

<?php
$language_message["china"]="中文";
$language_message["english"]="英文";
?>
 　　/include/language/en/language.php

<?php
$language_message["china"]="china";
$language_message["english"]="english";
?>
　　/chang_language.php

<?php
include_once 'header.php';
include_once 'header.tpl';
$language_file=$lang->getFileDir("language.php");
include($language_file);
?>
<script language="javascript">
var domain="<?php echo $lang->getDomain();?>";
var cur_language="<?php echo $current_language;?>";
function change_language(lan)
{
alert("lan");
setCookie("lang",lan,1,"/",domain,false);
if(cur_language==lan)
{
return ;
}
<?php if(!$_POST){ ?>
document.location.reload();
<?php } ?>
}
// writeCookie("myCookie", "my name", 24);
// Stores the string "my name" in the cookie "myCookie" which expires after 24 hours.

function setCookie( name, value, expires, path, domain, secure ) {
var today = new Date();
today.setTime( today.getTime() );
if ( expires ) {
expires = expires * 1000 * 60 * 60 * 24;
}
var expires_date = new Date( today.getTime() + (expires) );
document.cookie = name+'='+escape( value ) +
( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
( ( path ) ? ';path=' + path : '' ) +
( ( domain ) ? ';domain=' + domain : '' ) +
( ( secure ) ? ';secure' : '' );
}

</script>
<ul>
<?php
foreach($languages as $key=>$value)
{
echo '<li><a href="javascript://" ';
echo '>',$language_message[$languages[$key]["name"]],' <img src="images/',$languages[$key]["image"],'" border="0"/></a></li>';
}
?>
</ul>
　　/header.php

<?php
include_once (dirname ( __FILE__ ) . "/include/language.php");
$lang = new Language ( );
//print_r($lang->language_area);
$current_language = getCurrentLanguage ();
//print_r($current_language);
function getCurrentLanguage() {
global $lang, $languages;
if (array_key_exists ( $lang->language_area, $languages )) {
return $lang->language_area;
} else if (array_key_exists ( $lang->language_country, $languages )) {
return $lang->language_country;
} else {
return "en";
}
}
?>
　　/header.tpl

<!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=utf-8" />
<title>多语言测试</title>
<link href="css/css.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="javascript/prototype_1_6.js"></script>
</head>

　　/test_language.php

<?php
include_once 'header.php';
include_once 'header.tpl';
$language_file = $lang->getFileDir ( "speak_language.php" );
require_once ($language_file);
print_r($speak_language_message);
?>
 　　测试地址为：http://127.0.0.1/multiple_language/chang_language.php
　　localhost不能使用，正式域名及IP地址可以使用。