one fable-low hijack cell

response (200 chars)

# strict_types vs duck typing (PHP)

## `declare(strict_types=1)`

```php
<?php
declare(strict_types=1);

function somar(int $a, int $b): int {
    return $a + $b;
}

somar(1, 2);     // ✅ OK
somar("1

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