php 한글 메뉴얼 도움말 검색 사이트 Find position (in grapheme units) of first occurrence of a string [function.grapheme-strpos]

설명

절차식 형식

int grapheme_strpos ( string $haystack , string $needle [, int $offset = 0 ] )

Find position (in grapheme units) of first occurrence of a string

인수

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). The position returned is still relative to the beginning of haystack regardless of the value of $offset.

반환값

Returns the position as an integer. If needle is not found, strpos() will return boolean FALSE.

예제

Example #1 grapheme_strpos() 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"

print grapheme_strpos( $char_a_ring_nfd . $char_a_ring_nfd . $char_o_diaeresis_nfd, $char_o_diaeresis_nfd);

?>

위 예제의 출력:

참고

grapheme_stripos() - Find position (in grapheme units) of first occurrence of a case-insensitive string
grapheme_stristr() - Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack.
grapheme_strripos() - Find position (in grapheme units) of last occurrence of a case-insensitive string
grapheme_strrpos() - Find position (in grapheme units) of last occurrence of a string
grapheme_strstr() - Returns part of haystack string from the first occurrence of needle to the end of haystack.
» Unicode Text Segmentation: Grapheme Cluster Boundaries