Bug #79689 [Com]: Casting a non-existent array index to int returns 0 instead of null

Edit report at https://bugs.php.net/bug.php?id=79689&edit=1 ID: 79689 Comment by: bugreports at gmail dot com Reported by: sebastian dot awatramani at gmail dot com Summary: Casting a non-existent array index to int returns 0 instead of null Status: Open Type: Bug Package: Unknown/Other Function Operating System: Linux Mint 19 PHP Version: 7.4Git-2020-06-11 (Git) Block user comment: N Private report: N New Comment: please fix your expectations according how ternary operator works for many years now, your expected behavior would it make completly useless for 99% of all use cases Previous Comments: ------------------------------------------------------------------------ [2020-06-11 15:44:44] sebastian dot awatramani at gmail dot com Description: ------------ Using the null coalesce operator while casting a result to int, I expect that if the array index I'm trying to assign doesn't exist, it should fail and then move on to the next part of the NC statement, like so: $a = (int) $_GET['field'] ?? null If there is no $_GET['field'] nor a $_GET in general, I expect $a to equal null. But instead $a ends up as 0 because casting a non-existent array index to int returns the int val of false Test script: --------------- $a = (int) $_GET['field'] ?? null Expected result: ---------------- $a === null Actual result: -------------- $a === 0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79689&edit=1