<?php 
/** 
 * Application requirement checker script. 
 * 
 * In order to run this script use the following console command: 
 * php requirements.php 
 * 
 * In order to run this script from the web, you should copy it to the web root. 
 * If you are using Linux you can create a hard link instead, using the following command: 
 * ln requirements.php ../requirements.php 
 */ 
 
// you may need to adjust this path to the correct Yii framework path 
$frameworkPath = dirname(__FILE__) . '/vendor/yiisoft/yii2'; 
 
if (!is_dir($frameworkPath)) { 
    echo '<h1>Error</h1>'; 
    echo '<p><strong>The path to yii framework seems to be incorrect.</strong></p>'; 
    echo '<p>You need to install Yii framework via composer or adjust the framework path in file <abbr title="' . __FILE__ . '">' . basename(__FILE__) . '</abbr>.</p>'; 
    echo '<p>Please refer to the <abbr title="' . dirname(__FILE__) . '/README.md">README</abbr> on how to install Yii.</p>'; 
} 
 
require_once($frameworkPath . '/requirements/YiiRequirementChecker.php'); 
$requirementsChecker = new YiiRequirementChecker(); 
 
$gdMemo = $imagickMemo = 'Either GD PHP extension with FreeType support or ImageMagick PHP extension with PNG support is required for image CAPTCHA.'; 
$gdOK = $imagickOK = false; 
 
if (extension_loaded('imagick')) { 
    $imagick = new Imagick(); 
    $imagickFormats = $imagick->queryFormats('PNG'); 
    if (in_array('PNG', $imagickFormats)) { 
        $imagickOK = true; 
    } else { 
        $imagickMemo = 'Imagick extension should be installed with PNG support in order to be used for image CAPTCHA.'; 
    } 
} 
 
if (extension_loaded('gd')) { 
    $gdInfo = gd_info(); 
    if (!empty($gdInfo['FreeType Support'])) { 
        $gdOK = true; 
    } else { 
        $gdMemo = 'GD extension should be installed with FreeType support in order to be used for image CAPTCHA.'; 
    } 
} 
 
/** 
 * Adjust requirements according to your application specifics. 
 */ 
$requirements = array( 
    // Database : 
    array( 
        'name' => 'PDO extension', 
        'mandatory' => true, 
        'condition' => extension_loaded('pdo'), 
        'by' => 'All DB-related classes', 
    ), 
    array( 
        'name' => 'PDO SQLite extension', 
        'mandatory' => false, 
        'condition' => extension_loaded('pdo_sqlite'), 
        'by' => 'All DB-related classes', 
        'memo' => 'Required for SQLite database.', 
    ), 
    array( 
        'name' => 'PDO MySQL extension', 
        'mandatory' => false, 
        'condition' => extension_loaded('pdo_mysql'), 
        'by' => 'All DB-related classes', 
        'memo' => 'Required for MySQL database.', 
    ), 
    array( 
        'name' => 'PDO PostgreSQL extension', 
        'mandatory' => false, 
        'condition' => extension_loaded('pdo_pgsql'), 
        'by' => 'All DB-related classes', 
        'memo' => 'Required for PostgreSQL database.', 
    ), 
    // Cache : 
    array( 
        'name' => 'Memcache extension', 
        'mandatory' => false, 
        'condition' => extension_loaded('memcache') || extension_loaded('memcached'), 
        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-caching-memcache.html">MemCache</a>', 
        'memo' => extension_loaded('memcached') ? 'To use memcached set <a href="http://www.yiiframework.com/doc-2.0/yii-caching-memcache.html#$useMemcached-detail">MemCache::useMemcached</a> to <code>true</code>.' : '' 
    ), 
    // CAPTCHA: 
    array( 
        'name' => 'GD PHP extension with FreeType support', 
        'mandatory' => false, 
        'condition' => $gdOK, 
        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-captcha-captcha.html">Captcha</a>', 
        'memo' => $gdMemo, 
    ), 
    array( 
        'name' => 'ImageMagick PHP extension with PNG support', 
        'mandatory' => false, 
        'condition' => $imagickOK, 
        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-captcha-captcha.html">Captcha</a>', 
        'memo' => $imagickMemo, 
    ), 
    // PHP ini : 
    'phpExposePhp' => array( 
        'name' => 'Expose PHP', 
        'mandatory' => false, 
        'condition' => $requirementsChecker->checkPhpIniOff("expose_php"), 
        'by' => 'Security reasons', 
        'memo' => '"expose_php" should be disabled at php.ini', 
    ), 
    'phpAllowUrlInclude' => array( 
        'name' => 'PHP allow url include', 
        'mandatory' => false, 
        'condition' => $requirementsChecker->checkPhpIniOff("allow_url_include"), 
        'by' => 'Security reasons', 
        'memo' => '"allow_url_include" should be disabled at php.ini', 
    ), 
    'phpSmtp' => array( 
        'name' => 'PHP mail SMTP', 
        'mandatory' => false, 
        'condition' => strlen(ini_get('SMTP')) > 0, 
        'by' => 'Email sending', 
        'memo' => 'PHP mail SMTP server required', 
    ), 
); 
 
// OPcache check 
if (!version_compare(phpversion(), '5.5', '>=')) { 
    $requirements[] = array( 
        'name' => 'APC extension', 
        'mandatory' => false, 
        'condition' => extension_loaded('apc'), 
        'by' => '<a href="http://www.yiiframework.com/doc-2.0/yii-caching-apccache.html">ApcCache</a>', 
    ); 
} 
 
$requirementsChecker->checkYii()->check($requirements)->render(); 
 
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