You can use grapheme_strlen() to count emojis as a single character:
<?php
echo strlen('(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)
grapheme_strlen — Get string length in grapheme units
过程化风格
$string): int|false|nullGet string length in grapheme units (not bytes or characters)
stringThe string being measured for length. It must be a valid UTF-8 string.
The length of the string on success, 或者在失败时返回 false.
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);
?>以上示例会输出：
6
You can use grapheme_strlen() to count emojis as a single character:
<?php
echo strlen('