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<?php $a = 'BIT'; $b = $a; debug_zval_dump($a, $b);
Output for git.master, rfc.property-hooks
string(3) "BIT" interned string(3) "BIT" interned
Output for git.master_jit
string(3) "BIT" refcount(5) string(3) "BIT" refcount(5)

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