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Dieses Dokument verwendet PHP-Handbuch für chinesische Websites Freigeben
(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)
grapheme_strpos — Find position (in grapheme units) of first occurrence of a string
过程化风格
$haystack
, string $needle
[, int $offset
= 0
] )Find position (in grapheme units) of first occurrence of a string
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.
Returns the position as an integer. If needle is not found, strpos() will return boolean FALSE.
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 );
?>
以上例程会输出:
2