Bug #76321 [NEW]: ftell(STDIN) returns 0 when no stdin is supplied

From: gadelat at gmail dot com Operating system: Windows 10 PHP version: 7.2.5 Package: Filesystem function related Bug Type: Bug Bug description:ftell(STDIN) returns 0 when no stdin is supplied Description: ------------ I'm trying to make my application work in Windows. Important part of that is to detect if STDIN was provided. I can't figure out how to do that in Windows. On Linux OS, following returns bool(false), in Windows int(0) var_dump(ftell(STDIN)); Other approaches have same problem, or indefinitely block application if no stdin was provided. Is there no way to reliably detect STDIN in Windows? Test script: --------------- var_dump(ftell(STDIN)); Expected result: ---------------- FALSE Actual result: -------------- 0 -- Edit bug report at https://bugs.php.net/bug.php?id=76321&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76321&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76321&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76321&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76321&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76321&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76321&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76321&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76321&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76321&r=support Expected behavior: https://bugs.php.net/fix.php?id=76321&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76321&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76321&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76321&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76321&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76321&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76321&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76321&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76321&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76321&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76321&r=mysqlcfg