Bug #80944 [NEW]: gzencode() sets a strange OS byte on Windows

From: christoph at burschka dot de Operating system: Windows PHP version: 8.0.3 Package: Zlib related Bug Type: Bug Bug description:gzencode() sets a strange OS byte on Windows Description: ------------ The tenth byte of a gzip file identifies (in theory) the OS or file system on which the file was compressed. Running the test script on Linux produces a file where the byte is 0x03. On Windows, we get a somewhat strange value of 0x0A. (Meanwhile, the GnuWin utility on Windows set this byte to 0x0B for NT, while the gzip utility in Git Bash for Windows uses 0x03 as if it was Linux.) The standards document (RFC-1952) says that 0x0A is "TOPS-20", and sure enough - running the file utility on the resulting file shows: "test1.gz: gzip compressed data, from TOPS/20". I'm not sure if I can call this a bug, since it doesn't really matter in practice what gets written there (for example writing the same value on all platforms would be understandable), but it seems odd that we *do* get a platform-specific value, and it is for a different, long-dead platform. Test script: --------------- <?php file_put_contents('test1.gz', gzencode('Hello world')); ?> -- Edit bug report at https://bugs.php.net/bug.php?id=80944&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80944&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80944&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80944&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80944&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80944&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80944&r=support Expected behavior: https://bugs.php.net/fix.php?id=80944&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80944&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80944&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80944&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80944&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80944&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80944&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80944&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80944&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80944&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80944&r=mysqlcfg