PHP Manual
Grapheme 函数
Get string length in grapheme units

grapheme_strlen

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

grapheme_strlen — Get string length in grapheme units

说明

过程化风格

grapheme_strlen ( string $input ) : int

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

参数

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

返回值

The length of the string on success, and 0 if the string is empty.

范例

Example #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：

参见

» Unicode Text Segmentation: Grapheme Cluster Boundaries
iconv_strlen() - 返回字符串的字符数统计
mb_strlen() - 获取字符串的长度
strlen() - 获取字符串长度

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