[PHP-BUG] Bug #74312 [NEW]: Filter BOMs out of PHP output

[email protected] ("furun at arcor dot de")
Newsgroups php.bugs
Message-ID <[email protected]>
From:             furun at arcor dot de
Operating system: Win7
PHP version:      7.0.17
Package:          Unicode Engine related
Bug Type:         Bug
Bug description:Filter BOMs out of PHP output

Description:
------------
PHP send the BOM (before the tag "<?php") to the output. This is a
source for some very strange buggy behavior, which are sometimes very
difficult to find, because a developer searches errors first in the code
it self and not in a mostly invisible BOM.
(I searched a "bug" in a image creating script for long time, before i
found the BOM-Bug in a third party plugin far away from the "buggy
code". The common "Headers already sent" error caused by the BOM are
still confusing, but easier to find then a corrupted binary file.)

I would suggest that PHP filters every BOM from PHP output.

(Or is there any reason not to do so i not know of?)


Test script:
---------------
(Use any file with BOM)


-- 
Edit bug report at https://bugs.php.net/bug.php?id=74312&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=74312&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=74312&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=74312&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=74312&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=74312&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=74312&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=74312&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=74312&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=74312&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=74312&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=74312&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=74312&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=74312&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74312&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=74312&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=74312&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=74312&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=74312&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=74312&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=74312&r=mysqlcfg
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