display_error( __( 'Advanced Custom Fields is a required plugin.', 'acf-flexible-content-preview' ) ); return false; } if ( $this->version_compare( '5.6.0', acf()->version, '>' ) ) { $this->display_error( __( 'Advanced Custom Fields should be on version 5.6.0 or above.', 'acf-flexible-content-preview' ) ); return false; } return true; } // Display message and handle errors public function display_error( $message ) { trigger_error( $message ); add_action( 'admin_notices', function() use ( $message ) { printf( '

', $message ); } ); // Deactive self add_action( 'admin_init', function() { deactivate_plugins( FCP_ACF_OPTIONS_MAIN_FILE_DIR ); unset( $_GET['activate'] ); } ); } // Compare versions private function version_compare( $ver1, $ver2, $operator = null ) { $p = '#(\.0+)+($|-)#'; $ver1 = preg_replace( $p, '', $ver1 ); $ver2 = preg_replace( $p, '', $ver2 ); return isset( $operator ) ? version_compare( $ver1, $ver2, $operator ) : version_compare( $ver1, $ver2 ); } }