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<?php class Foo { protected $baz = 1; } $foo = new Foo; $s = '"O:3:"Foo":1:{s:6:"*baz";i:1;}"'; var_dump($s); $foo = unserialize($s); var_dump($foo);
Output for git.master, git.master_jit
string(31) ""O:3:"Foo":1:{s:6:"*baz";i:1;}"" Notice: unserialize(): Error at offset 0 of 31 bytes in /in/4T5bb on line 8 bool(false)
Output for rfc.property-hooks
string(31) ""O:3:"Foo":1:{s:6:"*baz";i:1;}"" Warning: unserialize(): Error at offset 0 of 31 bytes in /in/4T5bb on line 8 bool(false)

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