Grapheme Funktionen
PHP-Handbuch

grapheme_strpos

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

Beschreibung

Prozeduraler Stil

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

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

Parameter-Liste

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.

Rückgabewerte

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

Changelog

Version Beschreibung
7.1.0 Support for negative offsets has been added.

Beispiele

Beispiel #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);

?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

2

Siehe auch