Bug #53956 [Bgs]: Zero Width Space is not replaced by ordinary space

Edit report at http://bugs.php.net/bug.php?id=53956&edit=1 ID: 53956 Updated by: rasmus@php.net Reported by: skyboy at mail dot ru Summary: Zero Width Space is not replaced by ordinary space Status: Bogus Type: Bug Package: PCRE related Operating System: Ubuntu 10.10 PHP Version: 5.3.5 Block user comment: N Private report: N New Comment: You should ask the PCRE guys about that. Previous Comments: ------------------------------------------------------------------------ [2011-02-08 21:40:18] skyboy at mail dot ru oh!sorry for this. this is my mistake. but why "zero width *space*" does not belong to [s]pace symbols' group? ------------------------------------------------------------------------ [2011-02-08 11:15:39] aharvey@php.net Your arguments to preg_replace are swapped, ie: preg_replace('#\s+#', $str, '-'); should be: preg_replace('#\s+#', '-', $str); Also note that Unicode zero width spaces aren't included in \s, but you can match them directly with the u modifier (replace <200b> with an actual zero width space character): preg_replace('#<200b>+#u', '-', $str); Not a bug: closing. ------------------------------------------------------------------------ [2011-02-08 10:45:51] skyboy at mail dot ru Description: ------------ Group of zero width spaces is succesfully replaced by any character but ordinary space. Test script: --------------- $str = "​​‎​​‎​​‎"; // 27 zero width spaces with unicode code of u200B var_dump($str); var_dump(preg_replace('#\s+#', $str, '-')); var_dump(preg_replace('#\s+#', $str, ' ')); Expected result: ---------------- string(27) "​​‎​​‎​​‎" string(1) "-" string(1) "​​‎​​‎​​‎-" Actual result: -------------- string(27) "​​‎​​‎​​‎" string(1) "-" string(27) "​​‎​​‎​​‎" ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53956&edit=1