#22108 [Bgs->Opn]: php doesn't ignore the utf-8 BOM

ID: 22108 Updated by: moriyoshi@php.net Reported By: bugzilla@jellycan.com -Status: Bogus +Status: Open -Bug Type: Output Control +Bug Type: Feature/Change Request Operating System: windows 2000 PHP Version: 4.2.3 New Comment: Because BOM issue has been referenced repeatedly as a header output preventer and we should be more aware of this, I don't see any reason we have to mark this report as bogus. Changing category from "output control" to a kind of "feature request". Previous Comments: ------------------------------------------------------------------------ [2003-02-07 13:57:22] helly@php.net 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 BOM = Byte Order Mark for UCS-2 encoding This value sould not be used in UTF-8 since the only reason besides detecting the byte order of UCS-2 was a special non breaking space. And newer Unicode versions have another representation for the same thing. Anyhow BOM = FE FF That makes depending on the byte order: UCS-2BE <-> "\xFE\xFF" UCS-2LE <-> "\xFF\xFE" Therefore a sequence of "EF BB" is another character and must not be ignored. ------------------------------------------------------------------------ [2003-02-07 10:42:16] tularis@php.net sniper, imagine someone would want to echo some text in eg. French. In that case, if you'd save it as ascii, you would get corrupted output. So instead you'd have to save as utf-8. Which seems to cause problems (or so bugzilla@jellycan.com tells us) ------------------------------------------------------------------------ [2003-02-07 08:58:21] sniper@php.net And why an earth would you save PHP files in any other format than ascii? ------------------------------------------------------------------------ [2003-02-07 08:53:10] derick@php.net What is a BOM ? Derick ------------------------------------------------------------------------ [2003-02-07 08:46:36] bugzilla@jellycan.com Problem: When a php file is saved in utf-8 format with the UTF-8 BOM as the first three bytes of the file (EF BB BF), PHP doesn't ignore these bytes when loading and compiling the file, but instead considers them output coming prior to the <?php. This causes incorrect display of the page and failure of any http header output. It does this even when the internal character format is set in php.ini to be utf-8. Desired outcome: PHP recognizes the utf-8 bom and disregards it. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=22108&edit=1