Returns part of haystack string from the first occurrence of needle to the end of haystack.
If needle is not found, returns FALSE.
If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.
Megjegyzés: This function is case-sensitive. For case-insensitive searches, use stristr().
See also ereg(), preg_match(), strchr(), stristr(), strpos(), strrchr(), and substr().