strlen() php function giving the wrong length of unicode characters -

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• php: strlen returns character length instead of byte length 4 answers

i trying length of unicode characters string

$text = 'نام سلطان م'; $length = strlen($text); echo $length; 

output

20 

how determines length of unicode characters string?

strlen() not handling multibyte characters correctly, assumes 1 char equals 1 byte, invalud unicode. behavior documented here: http://php.net/strlen

strlen() returns number of bytes rather number of characters in string.

solution use mb_strlen() function instead (mb stands multi byte) (see mb_strlen() docs).

edit

if reason chanage in code not possible/doable, 1 may want ensure string functions automatically overloaded multibyte counterparts. supported php , documented here.

please note may want edit php.ini ensure mb_string works want to. available settings documented here.