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grapheme_stripos

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

grapheme_stripos — Find position (in grapheme units) of first occurrence of a case-insensitive string

Descrizione

Stile procedurale

grapheme_stripos(string $haystack, string $needle, int $offset = 0): int|false

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

Elenco dei parametri

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.

Valori restituiti

Returns the position as an integer. If needle is not found, grapheme_stripos() will return false.

Log delle modifiche

Versione	Descrizione
7.1.0	Support for negative `offset`s has been added.

Esempi

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);

?>

Il precedente esempio visualizzerà:

Vedere anche:

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

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User Contributed Notes 1 note

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Anonymous ¶

6 years ago


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';}

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