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<?php |
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/** |
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* WP Requirements |
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* |
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* Utility to check current PHP version, WordPress version and PHP extensions. |
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* |
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* @package WP_Requirements |
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* @version 1.4.0 |
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* @author Fulvio Notarstefano <[email protected]> |
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* @link https://github.com/nekojira/wp-requirements |
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* @license GPL2+ |
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*/ |
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if ( ! class_exists( 'SimCal_WP_Requirements' ) ) { |
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class SimCal_WP_Requirements { |
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/** |
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* Plugin name. |
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* |
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* @access private |
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* @var string |
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*/ |
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private $name = ''; |
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/** |
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* Plugin main file. |
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* |
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* plugin_basename( __FILE__ ) |
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* |
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* @access private |
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* @var string |
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*/ |
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private $plugin = ''; |
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/** |
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* WordPress. |
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* |
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* @access private |
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* @var bool |
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*/ |
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private $wp = true; |
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/** |
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* PHP. |
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* |
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* @access private |
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* @var bool |
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*/ |
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private $php = true; |
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/** |
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* PHP Extensions. |
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* |
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* @access private |
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* @var bool |
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*/ |
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private $extensions = true; |
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/** |
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* Requirements to check. |
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* |
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* @access private |
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* @var array |
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*/ |
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private $requirements = array(); |
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/** |
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* Results failures. |
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* |
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* Associative array with requirements results. |
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* |
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* @access private |
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* @var array |
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*/ |
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private $failures = array(); |
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/** |
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* Admin notice. |
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* |
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* @access private |
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* @var string |
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*/ |
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private $notice = ''; |
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/** |
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* Run checks. |
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* |
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* @param string $name The plugin name. |
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* @param string $plugin Output of `plugin_basename( __FILE__ )`. |
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* @param array $requirements Associative array with requirements. |
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*/ |
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public function __construct( $name, $plugin, $requirements ) { |
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$this->name = htmlspecialchars( strip_tags( $name ) ); |
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$this->plugin = $plugin; |
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$this->requirements = $requirements; |
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if ( ! empty( $requirements ) && is_array( $requirements ) ) { |
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$failures = $extensions = array(); |
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$requirements = array_merge( |
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array( |
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'WordPress' => '', |
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'PHP' => '', |
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'Extensions' => '', |
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), $requirements |
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); |
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// Check for WordPress version. |
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if ( $requirements['WordPress'] && is_string( $requirements['WordPress'] ) ) { |
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if ( function_exists( 'get_bloginfo' ) ) { |
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$wp_version = get_bloginfo( 'version' ); |
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if ( version_compare( $wp_version, $requirements['WordPress'] ) === - 1 ) { |
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$failures['WordPress'] = $wp_version; |
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$this->wp = false; |
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} |
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} |
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} |
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// Check fo PHP version. |
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if ( $requirements['PHP'] && is_string( $requirements['PHP'] ) ) { |
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if ( version_compare( PHP_VERSION, $requirements['PHP'] ) === -1 ) { |
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$failures['PHP'] = PHP_VERSION; |
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$this->php = false; |
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} |
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} |
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// Check fo PHP Extensions. |
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if ( $requirements['Extensions'] && is_array( $requirements['Extensions'] ) ) { |
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foreach ( $requirements['Extensions'] as $extension ) { |
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if ( $extension && is_string( $extension ) ) { |
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$extensions[ $extension ] = extension_loaded( $extension ); |
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} |
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} |
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if ( in_array( false, $extensions ) ) { |
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foreach ( $extensions as $extension_name => $found ) { |
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if ( $found === false ) { |
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$failures['Extensions'][ $extension_name ] = $extension_name; |
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} |
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} |
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$this->extensions = false; |
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} |
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} |
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$this->failures = $failures; |
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} else { |
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trigger_error( 'WP Requirements: the requirements are invalid.', E_USER_ERROR ); |
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} |
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} |
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/** |
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* Get requirements results. |
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* |
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* @return array |
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*/ |
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public function failures() { |
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return $this->failures; |
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} |
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/** |
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* Check if versions check pass. |
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* |
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* @return bool |
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*/ |
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public function pass() { |
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if ( in_array( false, array( |
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$this->wp, |
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$this->php, |
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$this->extensions, |
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) ) ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Notice message. |
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* |
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* @param string $message An additional message. |
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* |
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* @return string |
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*/ |
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public function get_notice( $message = '' ) { |
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$notice = ''; |
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$name = $this->name; |
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$failures = $this->failures; |
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if ( ! empty( $failures ) && is_array( $failures ) ) { |
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$notice = '<div class="error">' . "\n"; |
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$notice .= "\t" . '<p>' . "\n"; |
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$notice .= '<strong>' . sprintf( '%s could not be activated.', $name ) . '</strong><br>'; |
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foreach ( $failures as $requirement => $found ) { |
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$required = $this->requirements[ $requirement ]; |
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if ( 'Extensions' == $requirement ) { |
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if ( is_array( $found ) ) { |
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$notice .= sprintf( |
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'Required PHP Extension(s) not found: %s.', |
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join( ', ', $found ) |
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) . '<br>'; |
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} |
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} else { |
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$notice .= sprintf( |
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'Required %1$s version: %2$s - Version found: %3$s', |
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$requirement, |
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$required, |
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$found |
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) . '<br>'; |
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} |
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} |
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$notice .= '<em>' . sprintf( 'Please update to meet %s requirements.', $name ) . '</em>' . "\n"; |
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$notice .= "\t" . '</p>' . "\n"; |
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if ( $message ) { |
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$notice .= $message; |
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} |
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$notice .= '</div>'; |
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} |
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return $notice; |
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} |
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/** |
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* Print notice. |
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*/ |
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public function print_notice() { |
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echo $this->notice; |
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} |
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/** |
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* Deactivate plugin. |
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*/ |
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public function deactivate_plugin() { |
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if ( function_exists( 'deactivate_plugins' ) && function_exists( 'plugin_basename' ) ) { |
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deactivate_plugins( $this->plugin ); |
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} |
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} |
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/** |
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* Deactivate plugin and display admin notice. |
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* |
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* @param string $message An additional message in notice. |
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*/ |
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public function halt( $message = '' ) { |
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$this->notice = $this->get_notice( $message ); |
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if ( $this->notice && function_exists( 'add_action' ) ) { |
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add_action( 'admin_notices', array( $this, 'print_notice' ) ); |
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add_action( 'admin_init', array( $this, 'deactivate_plugin' ) ); |
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if ( isset( $_GET['activate'] ) ) { |
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unset( $_GET['activate'] ); |
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} |
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} |
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} |
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} |
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} |
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