* @link http://www.yiiframework.com/
* @copyright Copyright © 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
* @version $Id$
* @package system
* @since 1.0
*/
/**
* @var array List of requirements (name, required or not, result, used by, memo)
*/
$requirements = array(
array(
t('yii#PHP version'),
true,
version_compare(PHP_VERSION,"5.1.0",">="),
'Yii Framework',
t('yii#PHP 5.1.0 or higher is required.')),
array(
t('yii#$_SERVER variable'),
true,
($message=checkServerVar())==='',
'Yii Framework',
$message),
array(
t('yii#Reflection extension'),
true,
class_exists('Reflection',false),
'Yii Framework',
''),
array(
t('yii#PCRE extension'),
true,
extension_loaded("pcre"),
'Yii Framework',
''),
array(
t('yii#SPL extension'),
true,
extension_loaded("SPL"),
'Yii Framework',
''),
array(
t('yii#DOM extension'),
false,
class_exists("DOMDocument",false),
'CWsdlGenerator',
''),
array(
t('yii#PDO extension'),
false,
class_exists("PDO",false),
t('yii#All DB-related classes'),
t('yii#Additional drivier-specific PDO extension (e.g. pdo_mysql) is also needed.')),
array(
t('yii#Memcache extension'),
false,
extension_loaded("memcache"),
'CMemCache',
''),
array(
t('yii#APC extension'),
false,
extension_loaded("apc"),
'CApcCache',
''),
array(
t('yii#Mcrypt extension'),
false,
extension_loaded("mcrypt"),
'CSecurityManager',
'This is required by encrypt and decrypt methods.'),
array(
t('yii#SOAP extension'),
false,
extension_loaded("soap"),
'CWebService, CWebServiceAction',
''),
array(
t('yii#GD extension'),
false,
extension_loaded('gd'),
'CCaptchaAction',
''),
);
function checkServerVar()
{
$vars=array('HTTP_HOST', 'SERVER_NAME', 'SERVER_PORT', 'SCRIPT_NAME', 'SCRIPT_FILENAME', 'PHP_SELF', 'HTTP_ACCEPT', 'HTTP_USER_AGENT');
$missing=array();
foreach($vars as $var)
{
if(!isset($_SERVER[$var]))
$missing[]=$var;
}
if(!empty($missing))
return t('yii#$_SERVER does not have {vars}.',array('{vars}'=>implode(', ',$missing)));
if(realpath($_SERVER["SCRIPT_FILENAME"])!==realpath(__FILE__))
return t('yii#$_SERVER["SCRIPT_FILENAME"] must be the same as the entry script file path.');
if(!isset($_SERVER["REQUEST_URI"]) && isset($_SERVER["QUERY_STRING"]))
return t('yii#Either $_SERVER["REQUEST_URI"] or $_SERVER["QUERY_STRING"] must exist.');
if(!isset($_SERVER["PATH_INFO"]) && strpos($_SERVER["PHP_SELF"],$_SERVER["SCRIPT_NAME"])!==0)
return t('yii#Unable to determine URL path info. Please make sure $_SERVER["PATH_INFO"] (or $_SERVER["PHP_SELF"] and $_SERVER["SCRIPT_NAME"]) contains proper value.');
return '';
}
function getYiiVersion()
{
$coreFile=dirname(__FILE__).'/../framework/YiiBase.php';
if(is_file($coreFile))
{
$contents=file_get_contents($coreFile);
$matches=array();
if(preg_match('/public static function getVersion.*?return \'(.*?)\'/ms',$contents,$matches)>0)
return $matches[1];
}
return '';
}
/**
* Returns a localized message according to user preferred language.
* @param string message to be translated
* @param array parameters to be applied to the translated message
* @return string translated message
*/
function t($message,$params=array())
{
static $messages;
if($messages===null)
{
$messages=array();
if(($lang=getPreferredLanguage())!==false)
{
$file=dirname(__FILE__)."/messages/$lang/yii.php";
if(is_file($file))
$messages=include($file);
}
}
if(($pos=strpos($message,'#'))!==false)
$message=(string)substr($message,$pos+1);
if(empty($message))
return $message;
if(isset($messages[$message]) && $messages[$message]!=='')
$message=$messages[$message];
return $params!==array() ? strtr($message,$params) : $message;
}
function getPreferredLanguage()
{
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && ($n=preg_match_all('/([\w\-]+)\s*(;\s*q\s*=\s*(\d*\.\d*))?/',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches))>0)
{
$languages=array();
for($i=0;$i<$n;++$i)
$languages[$matches[1][$i]]=empty($matches[3][$i]) ? 1.0 : floatval($matches[3][$i]);
arsort($languages);
foreach($languages as $language=>$pref)
return strtolower(str_replace('-','_',$language));
}
return false;
}
function getServerInfo()
{
$info[]=isset($_SERVER['SERVER_SOFTWARE']) ? $_SERVER['SERVER_SOFTWARE'] : '';
$info[]='Yii Framework/'.getYiiVersion();
$info[]=@strftime('%Y-%m-%d %H:%m',time());
return implode(' ',$info);
}
function renderFile($_file_,$_params_=array())
{
extract($_params_);
require($_file_);
}
$result=1; // 1: all pass, 0: fail, -1: pass with warnings
$n=count($requirements);
for($i=0;$i<$n;++$i)
{
$requirement=$requirements[$i];
if($requirement[1] && !$requirement[2])
$result=0;
else if($result>0 && !$requirement[1] && !$requirement[2])
$result=-1;
$requirements[$i][0]=$requirements[$i][0];
$requirements[$i][3]=$requirements[$i][3];
$requirements[$i][4]=$requirements[$i][4];
if($requirements[$i][4]==='')
$requirements[$i][4]=' ';
}
$lang=getPreferredLanguage();
$viewFile=dirname(__FILE__)."/views/$lang/index.php";
if(!is_file($viewFile))
$viewFile=dirname(__FILE__).'/views/index.php';
renderFile($viewFile,array(
'requirements'=>$requirements,
'result'=>$result,
'serverInfo'=>getServerInfo()));