grapheme_stripos
(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0)
grapheme_stripos — Find position (in grapheme units) of first occurrence of a case-insensitive string
Описание
Процедурный стиль
$haystack
, string $needle
[, int $offset = 0
] )Find position (in grapheme units) of first occurrence of a case-insensitive string
Список параметров
-
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.
Возвращаемые значения
Returns the position as an integer. If needle is not found, grapheme_stripos() will return boolean FALSE.
Примеры
Пример #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);
?>
Результат выполнения данного примера:
2
Смотрите также
- grapheme_stristr() - Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack.
- grapheme_strpos() - Find position (in grapheme units) of first occurrence of a string
- 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
Коментарии
As expected, grapheme_stripos() does return boolean FALSE if the needle is not found in the haystack.
Use strict type comparison to check for that condition, like:
if (FALSE === grapheme_stripos('a', 'b')) {print 'Needle not found';}