🐛 Fix PHP 8.2 deprecation when using DB\Jig with FORMAT_Serialized

[flaviojdp]

🐛 Fix PHP 8.2 deprecation when using DB\Jig with FORMAT_Serialized

PHP 8.2 deprecates dynamic property creation.
When using DB\Jig with FORMAT_Serialized, this can trigger warnings like:

Creation of dynamic property ArrayObject::$0 is deprecated

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🔁 Steps to reproduce

$db = new \DB\Jig($path, \DB\Jig::FORMAT_Serialized);
$data = $db->read('collection');

Then pass the data through template rendering (or any flow that reaches Base::recursive()).

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❌ Current behavior

When $arg is an instance of ArrayObject and $key is numeric, the following line in Base::recursive():

$arg->$key = ...

attempts to create a dynamic property like $arg->0, which is deprecated in PHP 8.2.

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✅ Expected behavior

No deprecation warnings when handling data from DB\Jig::FORMAT_Serialized.

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🧠 Additional context

• The issue does not occur when using DB\Jig::FORMAT_JSON
• JSON returns arrays, while FORMAT_Serialized may return ArrayObject instances
• The issue arises specifically when ArrayObject is treated like a regular object inside recursive()

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💡 Proposed fix

Handle ArrayObject using array access instead of dynamic properties:

$value = $this->recursive(
    $val, $func, array_merge($stack, [$arg])
);

if ($arg instanceof \ArrayObject) {
    $arg[$key] = $value;
} else {
    $arg->$key = $value;
}

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🚀 Impact

• Fixes PHP 8.2 deprecation warnings
• Maintains backward compatibility
• Prevents potential breaking changes in future PHP versions (e.g. PHP 9)