#44570 [NEW]: mb_encode_mimeheader incorrectly folds iso-2022 text

From: tokul at users dot sourceforge dot net Operating system: Linux Debian Etch PHP version: 5.2CVS-2008-03-30 (snap) PHP Bug Type: mbstring related Bug description: mb_encode_mimeheader incorrectly folds iso-2022 text Description: ------------ mb_encode_mimeheader incorrectly folds iso-2022 texts. rfc 2047 chapter 3 second paragraph says that folded string must be reverted to ASCII. Code just splits ISO-2022 string without adding appropriate escapes. Code works as expected only when mbstring.internal_encoding is set to correct value. This dependency of mb_encode_mimeheader() is not documented and catches all users that are not used to mb_encode_mimeheader() quirks. Reproduce code: --------------- /** See http://etext.lib.virginia.edu/japanese/hyakunin/frames/hyakuframes.html */ $string = "\xe7\xa7\x8b\xe3\x81\xae\xe7\x94\xb0\xe3\x81\xae\x20" ."\xe3\x81\x8b\xe3\x82\x8a\xe3\x81\xbb\xe3\x81\xae\xe5\xba\xb5" ."\xe3\x81\xae\x20\xe8\x8b\xab\xe3\x82\x92\xe3\x81\x82" ."\xe3\x82\x89\xe3\x81\xbf\x20\x20\xe3\x82\x8f\xe3\x81\x8c" ."\xe8\xa1\xa3\xe6\x89\x8b\xe3\x81\xaf\x20\xe9\x9c\xb2" ."\xe3\x81\xab\xe3\x81\xac\xe3\x82\x8c\xe3\x81\xa4\xe3\x81\xa4"; $string_iso2022 = mb_convert_encoding($string,'iso-2022-jp','utf-8'); echo mb_encode_mimeheader($string_iso2022,'iso-2022-jp','b'); Expected result: ---------------- =?ISO-2022-JP?B?GyRCPSkkTkVEJE4bKEIgGyRCJCskaiRbJE4wQyROGyhCIBskQkZRGyhC?= =?ISO-2022-JP?B?GyRCJHIkIiRpJF8bKEIgIBskQiRvJCwwYTxqJE8bKEIgGyRCTyobKEI=?= =?ISO-2022-JP?B?GyRCJEskTCRsJEQkRBsoQg==?= Actual result: -------------- =?ISO-2022-JP?B?GyRCPSkkTkVEJE4bKEIgGyRCJCskaiRbJE4wQyROGyhCIBskQkZRJHIk?= =?ISO-2022-JP?B?IiRpJF8bKEIgIBskQiRvJCwwYTxqJE8bKEIgGyRCTyokSyRMJGwkRCRE?= =?ISO-2022-JP?B?GyhC?= -- Edit bug report at http://bugs.php.net/?id=44570&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=44570&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=44570&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=44570&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=44570&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=44570&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=44570&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=44570&r=needscript Try newer version: http://bugs.php.net/fix.php?id=44570&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=44570&r=support Expected behavior: http://bugs.php.net/fix.php?id=44570&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=44570&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=44570&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=44570&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44570&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=44570&r=dst IIS Stability: http://bugs.php.net/fix.php?id=44570&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=44570&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=44570&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=44570&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=44570&r=mysqlcfg