https:\/\/docs.typo3.org\/typo3cms\/InsideTypo3Reference\/CoreArchitecture\/Configuration\/LocalConfiguration\/Index.html<\/a><\/p>\nTaken from the install tool:<\/p>\n\n[FE][pageUnavailable_handling]<\/h1>\nHow TYPO3 should handle requests when pages are unavailable due to system problems.<\/p>\n\nempty (default)<\/dt>\nAn error message is shown.<\/dd>\nString<\/dt>\nHTML file or URL to show (reads content and outputs with correct headers), e.g. 'unavailable.html' or 'http:\/\/www.example.org\/errors\/unavailable.html<\/a>'.<\/dd>\nPrefix "REDIRECT:"<\/dt>\nIf prefixed "REDIRECT:" it will redirect to the URL\/script after the prefix.<\/dd>\nPrefix "READFILE:"<\/dt>\nIf prefixed with "READFILE:" then it will expect the remaining string to be a HTML file which will be read and outputted directly after having the marker "###CURRENT_URL###" substituted with REQUEST_URI and ###REASON### with reason text, for example: "READFILE:fileadmin\/unavailable.html".<\/dd>\nPrefix "USER_FUNCTION:"<\/dt>\nIf prefixed "USER_FUNCTION:" then it will call a user function, eg. "USER_FUNCTION:fileadmin\/class.user_unavailable.php:user_unavailable->pageUnavailable" where the file must contain a class "user_unavailable" with a method "pageUnavailable" inside with two parameters $param and $ref. If the client matches [SYS][devIPmask], this setting is ignored and the page is shown as normal.<\/dd>\n<\/dl>\n<\/div>\n<\/div>\n\n <\/div>\n \n view raw source<\/a>\n README.rst<\/a>\n <\/div>\n<\/div>\n<\/div>\n"}
Taken from the install tool:<\/p>\n
How TYPO3 should handle requests when pages are unavailable due to system problems.<\/p>\n