UTF-8 characters in preg_match_all (PHP)

Question

I have preg_match_all(\'/[aäeëioöuáéíóú]/u\', $in, $out, PREG_OFFSET_CAPTURE);

If $in = \'hëllo\' $out is:

arr         


        

Answer 1

There is simple workaround, to be used after preg_match() results matched. You need to iterate every match result and reassign position value with following:

$utfPosition = mb_strlen(substr($wholeSubjectString, 0, $capturedEntryPosition), 'utf-8');

Tested on php 5.4 under Windows, depends on Multibyte PHP extension only.