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<?php class Foo { public string $bar = 'a'; public ?string $baz = null; public function __construct(public readonly ?string $x = null) { } } $foo = new Foo(); $fooSerialized = 'O:3:"Foo":1:{s:3:"bar";s:1:"a";}a'; $fooUnserialized = unserialize($fooSerialized); var_dump($fooUnserialized->bar); // works because exists in serialized string var_dump($fooUnserialized->baz); // works because regular typed property, even if not existing in serialized string var_dump($fooUnserialized->x); // Doesn't work
Output for 8.3.5 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
Warning: unserialize(): Extra data starting at offset 32 of 33 bytes in /in/4d6XG on line 14 string(1) "a" NULL Fatal error: Uncaught Error: Typed property Foo::$x must not be accessed before initialization in /in/4d6XG:18 Stack trace: #0 {main} thrown in /in/4d6XG on line 18
Process exited with code 255.
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.1.30 - 8.1.33, 8.2.6 - 8.2.29
string(1) "a" NULL Fatal error: Uncaught Error: Typed property Foo::$x must not be accessed before initialization in /in/4d6XG:18 Stack trace: #0 {main} thrown in /in/4d6XG on line 18
Process exited with code 255.
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