Bug #81454 [Com]: error_reporting() and ini_get('error_reporting') can get out of sync using @

Edit report at https://bugs.php.net/bug.php?id=81454&edit=1 ID: 81454 Comment by: antonino dot spampinato86 at gmail dot com Reported by: daimona dot wiki at gmail dot com Summary: error_reporting() and ini_get('error_reporting') can get out of sync using @ Status: Open Type: Bug Package: Scripting Engine problem Operating System: Any PHP Version: Irrelevant Block user comment: N Private report: N New Comment: The @ operator will no longer silence fatal errors (E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_USER_ERROR, E_RECOVERABLE_ERROR, E_PARSE). Error handlers that expect error_reporting to be 0 when @ is used, should be adjusted to use a mask check instead: For consistency even the value 0, as it previously indicated error suppression. The php constants of the errors is a numerical sequence, a mask means from the single or the union of them. Previous Comments: ------------------------------------------------------------------------ [2021-09-17 19:37:54] daimona dot wiki at gmail dot com Description: ------------ This bug is a direct consequence of bug #75924. That one essentially states that, starting with PHP 7, the @ operator affects the output of error_reporting(), but not that of ini_get('error_reporting'). Now, consider the following test case: https://3v4l.org/70QJY For the PHP 7 examples, I'd expect error_reporting() and ini_get() to return the same value (-1) in "POST", but this is not the case. AIUI, it happens because: - error_reporting() and ini_get() are out of sync when testFunc() starts, per bug #75924 - error_reporting(0) syncs them again, as expected - Same for error_reporting($orig) - But then, when the silenced statement ends, only error_reporting() is restored (because only error_reporting() was changed by @, I guess) This bug affects all versions of PHP starting from 7.0. PHP 8 is also affected, even though some numeric values are different. Test script: --------------- function testFunc() { print "INSIDE 1 er=" . error_reporting() . ' ini=' . intval( ini_get( 'error_reporting' ) ) . "\n"; $orig = error_reporting( 0 ); print "INSIDE 2 er=" . error_reporting() . ' ini=' . intval( ini_get( 'error_reporting' ) ) . "\n"; error_reporting( $orig ); print "INSIDE 3 er=" . error_reporting() . ' ini=' . intval( ini_get( 'error_reporting' ) ) . "\n"; } print "PRE er=" . error_reporting() . ' ini=' . intval( ini_get( 'error_reporting' ) ) . "\n"; @testFunc(); print "POST er=" . error_reporting() . ' ini=' . intval( ini_get( 'error_reporting' ) ) . "\n"; Expected result: ---------------- PRE er=-1 ini=-1 INSIDE 1 er=0 ini=0 INSIDE 2 er=0 ini=0 INSIDE 3 er=0 ini=0 POST er=-1 ini=-1 Actual result: -------------- PRE er=-1 ini=-1 INSIDE 1 er=0 ini=-1 INSIDE 2 er=0 ini=0 INSIDE 3 er=0 ini=0 POST er=-1 ini=0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81454&edit=1