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<?php $tmp = 1; $a = new RecursiveArrayIterator(); $a[] = $tmp; echo serialize($a); ?>
Output for git.master, git.master_jit, rfc.property-hooks
O:22:"RecursiveArrayIterator":4:{i:0;i:0;i:1;a:1:{i:0;i:1;}i:2;a:0:{}i:3;N;}

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