| --TEST-- | |
| GH-15976: Bad interface names | |
| --FILE-- | |
| <?php | |
| interface _ {} | |
| interface bool {} | |
| ?> | |
| --EXPECTF-- | |
| Deprecated: Using "_" as an interface name is deprecated since 8.4 in %sinterface-names.php on line 3 | |
| Fatal error: Cannot use "bool" as an interface name as it is reserved in %sinterface-names.php on line 4 | |