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Fix #124 Require parenthesis around clone() #137

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Merged
Crell merged 1 commit into from
Jun 12, 2026
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Fix #124 Require parenthesis around clone() #137

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10 changes: 10 additions & 0 deletions spec.md
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Expand Up @@ -853,6 +853,16 @@ die();
$result = foo() ?? exit();
```

The `clone()` function SHOULD always be called with parenthesis, even when the optional `$withProperties` argument is
not provided. For example:
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```php
$b = clone($a);
$b = clone($a, [
'foo' => 'bar',
]);
```

### 4.8 Function Callable References

A function or method may be referenced in a way that creates a closure out of it, by providing `...` in place of arguments.
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