I finally solved the problem, after ditching the /b argument inpreg_replace It seems that Hebrew letters are not part of a word, sofar as /b is concerned. Here is the code for converting Hebrew finalletters in the middle of a word to normal letters, if anyone everneeds it: $text="עברית מבולגנת"; function hebrewNotWordEndSwitch ($from, $to, $text) { $text=preg_replace('/'.$from.'([א-ת])/u','$2'.$to.'$1',$text); return $text;} do { $text_before=$text; $text=hebrewNotWordEndSwitch("ך","כ",$text); $text=hebrewNotWordEndSwitch("ם","מ",$text); $text=hebrewNotWordEndSwitch("ן","נ",$text); $text=hebrewNotWordEndSwitch("ף","פ",$text); $text=hebrewNotWordEndSwitch("ץ","צ",$text);} while ( $text_before!=$text ); print $text; // עברית מסודרת! The do-while is necessary for multiple instances of letters, such as"אנני" which would start off as "אןןי". Note that there's still theproblem of acronyms with gershiim but that's not a difficult one tosolve. Dotan Cohen http://what-is-what.comhttp://gibberish.co.ilא-ב-ג-ד-ה-ו-ז-ח-ט-י-ך-כ-ל-ם-מ-ן-נ-ס-ע-ף-פ-ץ-צ-ק-ר-ש-ת; A: Because it messes up the order in which people normally read text.Q: Why is top-posting such a bad thing?