grapheme_stripos
Find position (in grapheme units) of first occurrence of a case-insensitive string
Description
Procedural style
intfalse grapheme_stripos(string $haystack, string $needle, int $offset = 0)
Parameters
-
haystack
-
The string to look in. Must be valid UTF-8.
-
needle
-
The string to look for. Must be valid UTF-8.
-
offset
-
The optional offset parameter allows you to specify where in haystack to
start searching as an offset in grapheme units (not bytes or characters).
If the offset is negative, it is treated relative to the end of the string.
The position returned is still relative to the beginning of haystack
regardless of the value of offset.
Return Values
Returns the position as an integer. If needle is not found, grapheme_stripos will return false.
Examples
Example #1 grapheme_stripos example
<?php
$char_a_ring_nfd = "a\xCC\x8A"; // 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"
$char_o_diaeresis_nfd = "o\xCC\x88"; // 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"
$char_O_diaeresis_nfd = "O\xCC\x88"; // 'LATIN CAPITAL LETTER O WITH DIAERESIS' (U+00D6) normalization form "D"
print grapheme_stripos( $char_a_ring_nfd . $char_a_ring_nfd . $char_o_diaeresis_nfd, $char_O_diaeresis_nfd);
?>
The above example will output: