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Diffstat (limited to 'user_guide_src/source/general/common_functions.rst')
| -rw-r--r-- | user_guide_src/source/general/common_functions.rst | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/user_guide_src/source/general/common_functions.rst b/user_guide_src/source/general/common_functions.rst index 7f327f00b..22f8d1942 100644 --- a/user_guide_src/source/general/common_functions.rst +++ b/user_guide_src/source/general/common_functions.rst @@ -93,4 +93,17 @@ is_https() ========== Returns TRUE if a secure (HTTPS) connection is used and FALSE -in any other case (including non-HTTP requests).
\ No newline at end of file +in any other case (including non-HTTP requests). + +function_usable($function_name) +=============================== + +Returns TRUE if a function exists and is usable, FALSE otherwise. + +This function runs a ``function_exists()`` check and if the +`Suhosin extension <http://www.hardened-php.net/suhosin/>` is loaded, +checks if it doesn't disable the function being checked. + +It is useful if you want to check for the availability of functions +such as ``eval()`` and ``exec()``, which are dangerous and might be +disabled on servers with highly restrictive security policies.
\ No newline at end of file |