It's still possible to detect when the @ operator is being used in the error handler in PHP8. Calling error_reporting() will no longer return 0 as documented, but using the @ operator does still change the return value when you call error_reporting().
My PHP error settings are set to use E_ALL, and when I call error_reporting() from the error handler of a non-suppressed error, it returns E_ALL as expected.
But when an error occurs on an expression where I tried to suppress the error with the @ operator, it returns: E_ERROR | E_PARSE | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR | E_RECOVERABLE_ERROR (or the number 4437).
I didn't want to use 4437 in my code in case it changes with different settings or future versions of PHP, so I now use:
<?php
function my_error_handler($err_no, $err_msg, $filename, $linenum) {
if (error_reporting() != E_ALL) {
return false; }
}
?>
If the code needs to work with all versions of PHP, you could check that error_reporting() doesn't equal E_ALL or 0.
And, of course, if your error_reporting settings in PHP is something other than E_ALL, you'll have to change that to whatever setting you do use.
