| --TEST-- | |
| $v = !$v/(bool)$v checks for undefined variables | |
| --INI-- | |
| opcache.enable=1 | |
| opcache.enable_cli=1 | |
| opcache.file_cache_only=0 | |
| --EXTENSIONS-- | |
| opcache | |
| --FILE-- | |
| function undef_negation() { | |
| echo "In undef_negation\n"; | |
| $v = !$v; | |
| var_export($v); | |
| echo "\n"; | |
| } | |
| function undef_bool_cast() { | |
| echo "In undef_bool_cast\n"; | |
| $v = (bool)$v; | |
| var_export($v); | |
| echo "\n"; | |
| } | |
| undef_negation(); | |
| undef_bool_cast(); | |
| --EXPECTF-- | |
| In undef_negation | |
| Warning: Undefined variable $v in %s on line 4 | |
| true | |
| In undef_bool_cast | |
| Warning: Undefined variable $v in %s on line 10 | |
| false | |