define(‘EXT‘, ‘.php‘);define(‘DS‘, DIRECTORY_SEPARATOR);defined(‘THINK_PATH‘) or define(‘THINK_PATH‘, __DIR__ . DS);define(‘LIB_PATH‘, THINK_PATH . ‘library‘ . DS);define(‘CORE_PATH‘, LIB_PATH . ‘think‘ . DS);define(‘TRAIT_PATH‘, LIB_PATH . ‘traits‘ . DS);defined(‘APP_PATH‘) or define(‘APP_PATH‘, dirname($_SERVER[‘SCRIPT_FILENAME‘]) . DS);defined(‘ROOT_PATH‘) or define(‘ROOT_PATH‘, dirname(realpath(APP_PATH)) . DS);defined(‘EXTEND_PATH‘) or define(‘EXTEND_PATH‘, ROOT_PATH . ‘extend‘ . DS);defined(‘VENDOR_PATH‘) or define(‘VENDOR_PATH‘, ROOT_PATH . ‘vendor‘ . DS);defined(‘RUNTIME_PATH‘) or define(‘RUNTIME_PATH‘, ROOT_PATH . ‘runtime‘ . DS);defined(‘LOG_PATH‘) or define(‘LOG_PATH‘, RUNTIME_PATH . ‘log‘ . DS);defined(‘CACHE_PATH‘) or define(‘CACHE_PATH‘, RUNTIME_PATH . ‘cache‘ . DS);defined(‘TEMP_PATH‘) or define(‘TEMP_PATH‘, RUNTIME_PATH . ‘temp‘ . DS);defined(‘CONF_PATH‘) or define(‘CONF_PATH‘, APP_PATH); // 配置文件目录defined(‘CONF_EXT‘) or define(‘CONF_EXT‘, EXT); // 配置文件后缀defined(‘ENV_PREFIX‘) or define(‘ENV_PREFIX‘, ‘PHP_‘); // 环境变量的配置前缀
thinkphp的系统变量
原文地址：https://www.cnblogs.com/fps2tao/p/10428500.html