STRISTR
Case-insensitive strstr()
SYNTAX
stristr ( string $haystack , mixed $needle [, bool $before_needle = FALSE ] ) : string
PARAMETERS
haystack
The string to search in
needle
If needle is not a string, it is converted to an integer and applied as the ordinal value of a character. This behavior is deprecated as of PHP 7.3.0, and relying on it is highly discouraged. Depending on the intended behavior, the needle should either be explicitly cast to string, or an explicit call to chr() should be performed.
before_needle
If TRUE, stristr() returns the part of the haystack before the first occurrence of the needle (excluding needle).
RETURN
Returns the matched substring. If needle is not found, returns FALSE.
EXAMPLES
HAYSTACK NEEDLE | STRING
SEcase
HAYSTACK NEEDLE | CHR
SEcase
BEFORE_NEEDLE
CA