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<?php $o1 = new StdClass(); debug_zval_dump($o1); $o2 = $o1; debug_zval_dump($o1); debug_zval_dump($o1, $o2); $o2 = &$o1; debug_zval_dump($o1, $o2);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.14, 8.4.1
object(stdClass)#1 (0) refcount(2){ } object(stdClass)#1 (0) refcount(3){ } object(stdClass)#1 (0) refcount(4){ } object(stdClass)#1 (0) refcount(4){ } object(stdClass)#1 (0) refcount(3){ } object(stdClass)#1 (0) refcount(3){ }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
object(stdClass)#1 (0) refcount(2){ } object(stdClass)#1 (0) refcount(3){ } object(stdClass)#1 (0) refcount(4){ } object(stdClass)#1 (0) refcount(4){ } object(stdClass)#1 (0) refcount(1){ } object(stdClass)#1 (0) refcount(1){ }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(stdClass)(0) refcount(2){ } object(stdClass)(0) refcount(3){ } object(stdClass)(0) refcount(4){ } object(stdClass)(0) refcount(4){ } object(stdClass)(0) refcount(1){ } object(stdClass)(0) refcount(1){ }

preferences:
78.13 ms | 409 KiB | 5 Q