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<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/*
Class: AppRequirements
Class that handles the requirements.
*/
class AppRequirements {
var $_required_results = array();
var $_recommended_results = array();
var $_required_extensions = array(
array('name' => 'JSON', 'extension' => 'json', 'info' => 'Check http://www.php.net/manual/en/book.json.php'),
array('name' => 'Multibyte String', 'extension' => 'mbstring', 'info' => 'http://www.php.net/manual/en/book.mbstring.php')
);
var $_recommended_extensions = array(
array('name' => 'cURL', 'extension' => 'curl', 'info' => 'cURL is required for Facebook Connect and Twitter Authenticate to work.'),
array('name' => 'Multibyte String', 'extension' => 'mbstring', 'info' => 'mbstring is designed to handle Unicode-based encodings such as UTF-8. Check http://www.php.net/manual/en/book.mbstring.php'),
array('name' => 'Alternative PHP Cache (APC)', 'extension' => 'apc', 'info' => 'An opcode cache, like the Alternative PHP Cache (APC) extension, might significantly improve ZOOs memory footprint. http://www.php.net/manual/en/book.apc.php')
);
var $_required_functions = array(
array('function' => 'imagegd', 'info' => 'Check http://www.php.net/manual/en/image.installation.php'),
array('function' => 'simplexml_load_string', 'info' => 'Check http://www.php.net/manual/en/function.simplexml-load-file.php'),
array('function' => 'simplexml_load_file', 'info' => 'Check http://www.php.net/manual/en/function.simplexml-load-string.php'),
array('function' => 'dom_import_simplexml', 'info' => 'Check http://www.php.net/manual/en/dom.setup.php')
);
var $_recommended_functions = array();
var $_required_classes = array(
array('class' => 'SimpleXMLElement', 'info' => 'Check http://de.php.net/manual/en/book.simplexml.php'),
array('class' => 'ArrayObject', 'info' => 'Check http://www.php.net/manual/en/class.arrayobject.php')
);
var $_recommended_classes = array();
function checkPHP() {
return !version_compare(PHP_VERSION, '5.2.7', '<');
}
function checkSafeMode() {
return !ini_get('safe_mode');
}
function checkMemoryLimit() {
$memory_limit = ini_get('memory_limit');
return $memory_limit == '-1' ? true : $this->_return_bytes($memory_limit) >= 33554432;
}
function checkRealpathCache() {
if ($this->_return_bytes((string) ini_get('realpath_cache_size')) / 1024 < 512) {
return false;
}
return true;
}
function checkAPC() {
return extension_loaded('apc') && class_exists('APCIterator');
}
function _return_bytes ($size_str) {
switch (substr ($size_str, -1)) {
case 'M': case 'm': return (int) $size_str * 1048576;
case 'K': case 'k': return (int) $size_str * 1024;
case 'G': case 'g': return (int) $size_str * 1073741824;
default: return $size_str;
}
}
function checkRequirements() {
$this->_required_results = array();
$this->_recommended_results = array();
$result = $this->_checkRequired();
$this->_checkRecommended();
return $result;
}
function _checkRequired() {
// check php
$status = $this->checkPHP();
$info = 'Zoo requires PHP 5.2.7+. Please upgrade your PHP version (http://www.php.net).';
$this->_addRequiredResult('PHP 5.2.7+', $status, $info);
foreach ($this->_required_extensions as $extension) {
$status = extension_loaded($extension['extension']);
$this->_addRequiredResult('Extension: ' . $extension['name'], $status, $extension['info']);
}
foreach ($this->_required_functions as $function) {
$status = function_exists($function['function']);
$this->_addRequiredResult('Function: ' . $function['function'], $status, $function['info']);
}
foreach ($this->_required_classes as $class) {
$status = class_exists($class['class']);
$this->_addRequiredResult('Class: ' . $class['class'], $status, $class['info']);
}
foreach ($this->_required_results as $return) {
if (!$return['status']) {
return $return;
}
}
return true;
}
function _checkRecommended() {
foreach ($this->_recommended_extensions as $extension) {
$status = extension_loaded($extension['extension']);
$this->_addRecommendedResult('Extension: ' . $extension['name'], $status, $extension['info']);
}
foreach ($this->_recommended_functions as $function) {
$status = function_exists($function['function']);
$this->_addRecommendedResult('Function: ' . $function['function'], $status, $function['info']);
}
foreach ($this->_recommended_classes as $class) {
$status = class_exists($class['class']);
$this->_addRecommendedResult('Class: ' . $class['class'], $status, $class['info']);
}
// check safe mode
$status = $this->checkSafeMode();
$info = 'It is recommended to turn off PHP safe mode.';
$this->_addRecommendedResult('PHP Safe Mode', $status, $info);
$status = $this->checkMemoryLimit();
$info = 'It is recommended to set the php setting memory_limit to 32M or higher.';
$this->_addRecommendedResult('PHP Memory Limit', $status, $info);
$status = $this->checkRealpathCache();
$info = 'It is recommended to set the php <a target="_blank" href="http://www.php.net/manual/en/ini.core.php#ini.realpath-cache-size">realpath cache setting</a> realpath_cache_size to 512K or higher.';
$this->_addRecommendedResult('PHP Realpath Cache', $status, $info);
if (extension_loaded('apc')) {
$status = $this->checkAPC();
$info = 'It is recommended to turn on APC (version 3.1.2+).';
$this->_addRecommendedResult('Alternative PHP Cache (APC) enabled', $status, $info);
}
foreach ($this->_recommended_results as $return) {
if (!$return['status']) {
return $return['info'];
}
}
return false;
}
function _addRequiredResult($name, $status, $info = '') {
$this->_required_results[] = compact('name', 'status', 'info');
}
function _addRecommendedResult($name, $status, $info = '') {
$this->_recommended_results[] = compact('name', 'status', 'info');
}
function displayResults() {
?>
<h3><?php echo JText::_('Zoo Requirements'); ?></h3>
<div><?php echo JText::_('If any of the items below are highlighted in red, you should try to correct them. Failure to do so could lead to your ZOO installation not functioning correctly.'); ?></div>
<table class="adminlist table table-bordered table-striped" width="100%">
<thead>
<tr>
<th class="title"><?php echo JText::_('Requirement'); ?></th>
<th width="20%"><?php echo JText::_('Status'); ?></th>
<th width="60%"><?php echo JText::_('Info'); ?></th>
</tr>
</thead>
<tfoot>
<tr>
<td colspan="3"> </td>
</tr>
</tfoot>
<tbody>
<?php
foreach ($this->_required_results as $i => $req) : ?>
<tr class="row<?php echo $i++ % 2; ?>">
<td class="key"><?php echo $req['name']; ?></td>
<td>
<?php $style = $req['status'] ? 'font-weight: bold; color: green;' : 'font-weight: bold; color: red;'; ?>
<span style="<?php echo $style; ?>"><?php echo $req['status'] ? JText::_('OK') : JText::_('Not OK'); ?></span>
</td>
<td>
<span><?php echo $req['status'] ? '' : JText::_($req['info']); ?></span>
</td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<h3><?php echo JText::_('Zoo Recommendations'); ?></h3>
<div><?php echo JText::_('The items below are recommendations only and ZOO will work fine if items are marked in red. However, you\'ll have an improved ZOO experience by fullfilling these recommendations.'); ?></div>
<table class="adminlist table table-bordered table-striped" width="100%">
<thead>
<tr>
<th class="title"><?php echo JText::_('Recommendation'); ?></th>
<th width="20%"><?php echo JText::_('Status'); ?></th>
<th width="60%"><?php echo JText::_('Info'); ?></th>
</tr>
</thead>
<tfoot>
<tr>
<td colspan="3"> </td>
</tr>
</tfoot>
<tbody>
<?php
foreach ($this->_recommended_results as $i => $req) : ?>
<tr class="row<?php echo $i++ % 2; ?>">
<td class="key"><?php echo $req['name']; ?></td>
<td>
<?php $style = $req['status'] ? 'font-weight: bold; color: green;' : 'font-weight: bold; color: red;'; ?>
<span style="<?php echo $style; ?>"><?php echo $req['status'] ? JText::_('OK') : JText::_('Not OK'); ?></span>
</td>
<td>
<span><?php echo $req['status'] ? '' : JText::_($req['info']); ?></span>
</td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<?php
}
}