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run code in 200+ php & hhvm versions
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<?php $a = 'BIT'; debug_zval_dump($a); $b = &$a; $c = &$a; debug_zval_dump($a);
based on SsDHT
Output for 7.0.0 - 7.1.0, 7.1.7 - 7.2.0
string(3) "BIT" refcount(1) string(3) "BIT" refcount(1)
Output for 7.1.5 - 7.1.6
string(3) "BIT" refcount(3) string(3) "BIT" refcount(3)
Output for 5.3.21 - 5.6.21
string(3) "BIT" refcount(2) string(3) "BIT" refcount(1)