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PHP - Manual: grapheme_strlen

2024-12-23

grapheme_strlen

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

grapheme_strlenGet string length in grapheme units

说明

过程化风格

grapheme_strlen(string $string): int|false|null

Get string length in grapheme units (not bytes or characters)

参数

string

The string being measured for length. It must be a valid UTF-8 string.

返回值

The length of the string on success, 或者在失败时返回 false.

范例

示例 #1 grapheme_strlen() 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_strlen'abc' $char_a_ring_nfd $char_o_diaeresis_nfd $char_a_ring_nfd);

?>

以上例程会输出:

6

参见

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User Contributed Notes 1 note

up
3
jonhoggg at gmail dot com
6 months ago
You can use grapheme_strlen() to count emojis as a single character:

<?php
   
echo strlen('🏴󠁧󠁢󠁥󠁮󠁧󠁿'); //28 - oh no
   
echo mb_strlen('🏴󠁧󠁢󠁥󠁮󠁧󠁿'); // - closer, but no
   
echo grapheme_strlen('🏴󠁧󠁢󠁥󠁮󠁧󠁿'); //1 - Bingo
?>

官方地址:https://www.php.net/manual/en/function.grapheme-strlen.php

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