If you are using a php version < 5.2.0 AND do not really need case insensitive performing, use mb_strpos instead.
mb_strpos is implemented for PHP 4 >= 4.0.6 and PHP 5
(PHP 5 >= 5.2.0, PHP 7)
mb_stripos — Finds position of first occurrence of a string within another, case insensitive
$haystack
, string $needle
[, int $offset = 0
[, string $encoding = mb_internal_encoding()
]] )
mb_stripos() returns the numeric position of
the first occurrence of needle in the
haystack string.
Unlike mb_strpos(),
mb_stripos() is case-insensitive.
If needle is not found, it returns FALSE.
haystack
The string from which to get the position of the first occurrence
of needle
needle
The string to find in haystack
offset
The position in haystack
to start searching
encodingCharacter encoding name to use. If it is omitted, internal character encoding is used.
Return the numeric position of the first occurrence of
needle in the haystack
string, or FALSE if needle is not found.
If you are using a php version < 5.2.0 AND do not really need case insensitive performing, use mb_strpos instead.
mb_strpos is implemented for PHP 4 >= 4.0.6 and PHP 5