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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
/**
* This file is executed before anything else.
* It checks the minimum PHP version required to run Piwik.
* This file must be compatible PHP4.
*/
$piwik_errorMessage = '';
// Minimum requirement: ->newInstanceArgs in 5.1.3
$piwik_minimumPHPVersion = '5.1.3RC';
$piwik_currentPHPVersion = PHP_VERSION;
$minimumPhpInvalid = version_compare($piwik_minimumPHPVersion, $piwik_currentPHPVersion) > 0;
if ($minimumPhpInvalid) {
$piwik_errorMessage .= "<p><b>To run Piwik you need at least PHP version $piwik_minimumPHPVersion</b></p>
<p>Unfortunately it seems your webserver is using PHP version $piwik_currentPHPVersion. </p>
<p>Please try to update your PHP version, Piwik is really worth it! Nowadays most web hosts
support PHP $piwik_minimumPHPVersion.</p>
<p>Also see the FAQ: <a href='http://piwik.org/faq/how-to-install/#faq_77'>My Web host supports PHP4 by default. How can I enable PHP5?</a></p>";
} else {
$piwik_zend_compatibility_mode = ini_get("zend.ze1_compatibility_mode");
if ($piwik_zend_compatibility_mode == 1) {
$piwik_errorMessage .= "<p><b>Piwik is not compatible with the directive <code>zend.ze1_compatibility_mode = On</code></b></p>
<p>It seems your php.ini file has <pre>zend.ze1_compatibility_mode = On</pre>It makes PHP5 behave like PHP4.
If you want to use Piwik you need to set <pre>zend.ze1_compatibility_mode = Off</pre> in your php.ini configuration file, and restart your web server. You may have to ask your system administrator.</p>";
}
if (!class_exists('ArrayObject')) {
$piwik_errorMessage .= "<p><b>Piwik and Zend Framework require the SPL extension</b></p>
<p>It appears your PHP was compiled with <pre>--disable-spl</pre>.
To enjoy Piwik, you need PHP compiled without that configure option.</p>";
}
if (!extension_loaded('session')) {
$piwik_errorMessage .= "<p><b>Piwik and Zend_Session require the session extension</b></p>
<p>It appears your PHP was compiled with <pre>--disable-session</pre>.
To enjoy Piwik, you need PHP compiled without that configure option.</p>";
}
if (!function_exists('ini_set')) {
$piwik_errorMessage .= "<p><b>Piwik and Zend_Session require the <code>ini_set()</code> function</b></p>
<p>It appears your PHP has disabled this function.
To enjoy Piwik, you need remove <pre>ini_set</pre> from your <pre>disable_functions</pre> directive in php.ini, and restart your webserver.</p>";
}
}
if (!function_exists('Piwik_ExitWithMessage')) {
/**
* Displays info/warning/error message in a friendly UI and exits.
*
* @param string $message Main message, must be html encoded before calling
* @param bool|string $optionalTrace Backtrace; will be displayed in lighter color
* @param bool $optionalLinks If true, will show links to the Piwik website for help
*/
function Piwik_ExitWithMessage($message, $optionalTrace = false, $optionalLinks = false)
{
@header('Content-Type: text/html; charset=utf-8');
if ($optionalTrace) {
$optionalTrace = '<span style="color:#888888">Backtrace:<br /><pre>' . $optionalTrace . '</pre></span>';
}
if ($optionalLinks) {
$optionalLinks = '<ul>
<li><a target="_blank" href="http://piwik.org">Piwik.org homepage</a></li>
<li><a target="_blank" href="http://piwik.org/faq/">Piwik Frequently Asked Questions</a></li>
<li><a target="_blank" href="http://piwik.org/docs/">Piwik Documentation</a></li>
<li><a target="_blank" href="http://forum.piwik.org/">Piwik Forums</a></li>
<li><a target="_blank" href="http://demo.piwik.org">Piwik Online Demo</a></li>
</ul>';
}
$headerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Zeitgeist/templates/simple_structure_header.tpl');
$footerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Zeitgeist/templates/simple_structure_footer.tpl');
$headerPage = str_replace('{$HTML_TITLE}', 'Piwik › Error', $headerPage);
$content = '<p>' . $message . '</p>
<p><a href="index.php">Go to Piwik</a><br/>
<a href="index.php?module=Login">Login</a></p>
' . $optionalTrace . ' ' . $optionalLinks;
echo $headerPage . $content . $footerPage;
exit;
}
}
if (!empty($piwik_errorMessage)) {
Piwik_ExitWithMessage($piwik_errorMessage, false, true);
}
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