#23904 [Opn->Bgs]: PREG_SPLIT_NO_EMPTY causes ctl chars to not be excluded with [^a-zA-Z0-9] or \W

ID: 23904 Updated by: andrei@php.net Reported By: jrose at lgb-inc dot com -Status: Open +Status: Bogus Bug Type: PCRE related Operating System: Linux PHP Version: 4.3.1 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Please read the function documentation. The third parameter is a maximum number of pieces to be returned, not the flags. Try: $parts = preg_split( '/\\W/', $string, -1, PREG_SPLIT_NO_EMPTY ); Previous Comments: ------------------------------------------------------------------------ [2003-05-30 13:10:32] jrose at lgb-inc dot com I slammed into this whilst converting Access data into MySQL. I was attempting to break apart the following into words (* here indicates that it fails to match /[\w,.-?]/): |*|W|a|s|h|i|n|g|t|o|n|,|*|D|C|*|* // text 057617368696e67746f6e2c20444320200 // hex I first tried splitting on any white space or commas: preg_match( '/[\\s,]+/', $string, PREG_SPLIT_NO_EMPTY ); When this didn't work, I examined the hexadecimal values as above, and, assuming that control characters weren't included in the \s group, tried several things, including the very simple: preg_match( '/\\W/', $string, PREG_SPLIT_NO_EMPTY ); Nothing worked, and ultimately I had to use preg_match_all() to split the string up. Example: $string = chr(5) . 'Washington,' . chr(4) . 'DC' . chr(2); $parts = preg_split( '/\\W/', $string, PREG_SPLIT_NO_EMPTY ); echo join('|', $parts); ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=23904&edit=1