'PHP version',
'mandatory' => true,
'condition' => version_compare(PHP_VERSION, '5.3.7', '>='),
'by' => 'Yii Framework',
'memo' => 'PHP 5.3.7 or higher is required.',
),
array(
'name' => 'Reflection extension',
'mandatory' => true,
'condition' => class_exists('Reflection', false),
'by' => 'Yii Framework',
),
array(
'name' => 'PCRE extension',
'mandatory' => true,
'condition' => extension_loaded('pcre'),
'by' => 'Yii Framework',
),
array(
'name' => 'SPL extension',
'mandatory' => true,
'condition' => extension_loaded('SPL'),
'by' => 'Yii Framework',
),
array(
'name' => 'MBString extension',
'mandatory' => true,
'condition' => extension_loaded('mbstring'),
'by' => 'Multibyte string processing',
'memo' => 'Required for multibyte encoding string processing.'
),
array(
'name' => 'Intl extension',
'mandatory' => false,
'condition' => $this->checkPhpExtensionVersion('intl', '1.0.2', '>='),
'by' => 'Internationalization support',
'memo' => 'PHP Intl extension 1.0.2 or higher is required when you want to use IDN-feature of EmailValidator or UrlValidator or the yii\i18n\Formatter
class.'
),
);