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<?php $x = 'O:16:"DOMConfiguration":1:{s:1:"A";r:1;}'; var_dump(unserialize($x));
Output for git.master, git.master_jit, rfc.property-hooks
object(__PHP_Incomplete_Class)#1 (2) { ["__PHP_Incomplete_Class_Name"]=> string(16) "DOMConfiguration" ["A"]=> *RECURSION* }

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