Bug #76086 [NEW]: Unable to write to php://stderr

From: chris at modd dot com dot au Operating system: Windows PHP version: 7.2.3 Package: Streams related Bug Type: Bug Bug description:Unable to write to php://stderr Description: ------------ Can no longer output to STDERR using file_put_contents. Used to work fine in PHP 5.x. Also Affects 7.1.x Test script: --------------- <?php $msg = "Error Occurred\n"; file_put_contents("php://stderr", $msg); Expected result: ---------------- Error Occurred written to console on stderr Actual result: -------------- Rather than stderr output error message, I get a warning: Only 0 of 15 bytes written, possibly out of free diskspace in script.php on line 3 -- Edit bug report at https://bugs.php.net/bug.php?id=76086&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76086&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76086&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76086&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76086&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76086&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76086&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76086&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76086&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76086&r=support Expected behavior: https://bugs.php.net/fix.php?id=76086&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76086&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76086&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76086&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76086&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76086&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76086&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76086&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76086&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76086&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76086&r=mysqlcfg