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synced 2026-04-22 23:48:14 +02:00
Nikita Popov
653e4ea1c5
While performing resource -> object migrations, we're adding defensive classes that are final, non-serializable and non-clonable (unless they are, of course). This path adds a ZEND_ACC_NO_DYNAMIC_PROPERTIES flag, that also forbids the creation of dynamic properties on these objects. This is a subset of #3931 and targeted at internal usage only (though may be extended to userland at some point in the future). It's already possible to achieve this (what the removed WeakRef/WeakMap code does), but there's some caveats: First, this simple approach is only possible if the class has no declared properties, otherwise it's necessary to special-case those properties. Second, it's easy to make it overly strict, e.g. by forbidding isset($obj->prop) as well. And finally, it requires a lot of boilerplate code for each class. Closes GH-5572.
29 lines
612 B
PHP
29 lines
612 B
PHP
--TEST--
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WeakReference object handlers
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--FILE--
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<?php
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$wr = WeakReference::create(new stdClass);
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var_dump($wr->disallow);
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var_dump(isset($wr->disallow));
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unset($wr->disallow);
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try {
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$wr->disallow = "writes";
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} catch (Error $ex) {
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var_dump($ex->getMessage());
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}
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try {
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$disallow = &$wr->disallowed;
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} catch (Error $ex) {
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var_dump($ex->getMessage());
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}
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?>
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--EXPECTF--
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Warning: Undefined property: WeakReference::$disallow in %s on line %d
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NULL
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bool(false)
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string(55) "Cannot create dynamic property WeakReference::$disallow"
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string(57) "Cannot create dynamic property WeakReference::$disallowed"
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