D25092.1734637523.diff
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	diff --git a/src/utils/utf8.php b/src/utils/utf8.php
	--- a/src/utils/utf8.php
	+++ b/src/utils/utf8.php
	@@ -288,8 +288,14 @@
	* @return int The character length of the string.
	*/
	function phutil_utf8_strlen($string) {
	- if (function_exists('utf8_decode')) {
	- return strlen(utf8_decode($string));
	+ if (function_exists('mb_convert_encoding')) {
	+ // Historically, this was just a call to strlen(utf8_decode($string))
	+ // but, since PHP 8.2, that function is deprecated, so this is
	+ // the current equivalent.
	+ // Note that we cannot just adopt mb_strlen($string, 'ISO-8859-1')
	+ // since it's not the exact equivalent as far as we can see.
	+ // https://we.phorge.it/T15188
	+ return strlen(mb_convert_encoding($string, 'ISO-8859-1'));
	}
	return count(phutil_utf8v($string));
	}