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| -rw-r--r-- | docs/parameter-parsing-api.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/parameter-parsing-api.md b/docs/parameter-parsing-api.md index 6bf035673b..2883c7014c 100644 --- a/docs/parameter-parsing-api.md +++ b/docs/parameter-parsing-api.md @@ -100,6 +100,9 @@ The following characters also have a meaning in the specifier string: zend_bool* must be passed after the corresponding bool*, zend_long* or double* arguments, respectively. A non-zero value will be written to the zend_bool if a PHP NULL is passed. + For `f` use the ``ZEND_FCI_INITIALIZED(fci)`` macro to check if a callable + has been provided and ``!ZEND_FCI_INITIALIZED(fci)`` to check if a PHP NULL + is passed. ## Note on 64bit compatibility |