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<?php namespace Foo{class Bar {}} namespace { var_export(serialize(new \Foo\Bar())); var_dump(unserialize('O:20:"../../../.ssh/id_rsa":0:{}')); }
Output for git.master, git.master_jit
'O:7:"Foo\\Bar":0:{}' Notice: unserialize(): Error at offset 0 of 32 bytes in /in/U3fjM on line 7 bool(false)
Output for rfc.property-hooks
'O:7:"Foo\\Bar":0:{}' Warning: unserialize(): Error at offset 0 of 32 bytes in /in/U3fjM on line 7 bool(false)

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