-syn keyword phpCoreConstant PHP_VERSION PHP_OS DEFAULT_INCLUDE_PATH PEAR_INSTALL_DIR PEAR_EXTENSION_DIR PHP_EXTENSION_DIR PHP_BINDIR PHP_LIBDIR PHP_DATADIR PHP_SYSCONFDIR PHP_LOCALSTATEDIR PHP_CONFIG_FILE_PATH PHP_OUTPUT_HANDLER_START PHP_OUTPUT_HANDLER_CONT PHP_OUTPUT_HANDLER_END E_ERROR E_WARNING E_PARSE E_NOTICE E_CORE_ERROR E_CORE_WARNING E_COMPILE_ERROR E_COMPILE_WARNING E_USER_ERROR E_USER_WARNING E_USER_NOTICE E_ALL contained
+syn keyword phpCoreConstant PHP_VERSION PHP_OS DEFAULT_INCLUDE_PATH PEAR_INSTALL_DIR PEAR_EXTENSION_DIR PHP_EXTENSION_DIR PHP_BINDIR PHP_LIBDIR PHP_DATADIR PHP_SYSCONFDIR PHP_LOCALSTATEDIR PHP_CONFIG_FILE_PATH PHP_OUTPUT_HANDLER_START PHP_OUTPUT_HANDLER_CONT PHP_OUTPUT_HANDLER_END contained
+
+" Predefined constants
+" Generated by: curl -q http://php.net/manual/en/errorfunc.constants.php | grep -oP 'E_\w+' | sort -u
+syn keyword phpCoreConstant E_ALL E_COMPILE_ERROR E_COMPILE_WARNING E_CORE_ERROR E_CORE_WARNING E_DEPRECATED E_ERROR E_NOTICE E_PARSE E_RECOVERABLE_ERROR E_STRICT E_USER_DEPRECATED E_USER_ERROR E_USER_NOTICE E_USER_WARNING E_WARNING contained