Locate the first case-independent occurrence in the string haystack
of the string needle. A zero-length string needle is considered to
match at the start of haystack.
This function is a case-insensitive version of the standard strstr().
@param haystack string to search in
@param needle string to search for
@return pointer to the located match within haystack
or a null pointer if no match
Locate the first case-independent occurrence in the string haystack of the string needle. A zero-length string needle is considered to match at the start of haystack.
This function is a case-insensitive version of the standard strstr().
@param haystack string to search in @param needle string to search for @return pointer to the located match within haystack or a null pointer if no match