Bug #79093 [NEW]: david@grudl.com

From: david at grudl dot com Operating system: PHP version: 7.4.1 Package: Output Control Bug Type: Bug Bug description:david@grudl.com Description: ------------ In PHP 7.4 class_exists($c, true) can return false and class_exists($c, false) can return true in one moment. Test script: --------------- file classes.php: ----- <?php class C1 { function f($arg) { } } class C2 extends C1 { function f() { } } ?> file test.php: ------- <?php set_error_handler(function () { var_dump(class_exists('C2', true)); // returns false var_dump(class_exists('C2', false)); // returns true }); include 'classes.php'; ?> Expected result: ---------------- Both return the same value. Actual result: -------------- var_dump(class_exists('C2', true)); // returns false var_dump(class_exists('C2', false)); // returns true -- Edit bug report at https://bugs.php.net/bug.php?id=79093&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79093&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79093&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79093&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79093&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79093&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79093&r=support Expected behavior: https://bugs.php.net/fix.php?id=79093&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79093&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79093&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79093&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79093&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79093&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79093&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79093&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79093&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79093&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79093&r=mysqlcfg