$GLOBALS['TYPO3_CONF_VARS']['SYS']['clearCacheSystem'] = true;

    $GLOBALS['TYPO3_CONF_VARS']['SYS']['enableDeprecationLog'] = 'file';
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['enableDeprecationLog'] = 'devlog';
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['systemLog'] = 'error_log,,0;';
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['systemLogLevel'] = 0;
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['devIPmask'] = '*';
    $GLOBALS['TYPO3_CONF_VARS']['BE']['debug'] = true;
    $GLOBALS['TYPO3_CONF_VARS']['FE']['debug'] = true;
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['sqlDebug'] = true;
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['displayErrors'] = 1;

    // Still show everything, but let website work.
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['errorHandlerErrors'] = E_ALL & ~(E_NOTICE | E_DEPRECATED);
    $GLOBALS['TYPO3_CONF_VARS']['SYS']['exceptionalErrors']  = E_ALL & ~(E_STRICT | E_DEPRECATED | E_NOTICE);