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<?php $array = [ 'foo' => [ 'bar' => [ 'baz' => 'bat'] ] ]; $obj = new ArrayObject($array); print_r($obj->foo); $obj->foo = 'bazbat'; print_r($obj); print_r((array)$obj);
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined property: ArrayObject::$foo in /in/mMYEM on line 6 Deprecated: Creation of dynamic property ArrayObject::$foo is deprecated in /in/mMYEM on line 8 ArrayObject Object ( [foo] => bazbat [storage:ArrayObject:private] => Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) ) ) Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
Warning: Undefined property: ArrayObject::$foo in /in/mMYEM on line 6 ArrayObject Object ( [foo] => bazbat [storage:ArrayObject:private] => Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) ) ) Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) )
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined property: ArrayObject::$foo in /in/mMYEM on line 6 ArrayObject Object ( [foo] => bazbat [storage:ArrayObject:private] => Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) ) ) Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) )
Output for 7.3.32 - 7.3.33
ArrayObject Object ( [foo] => bazbat [storage:ArrayObject:private] => Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) ) ) Array ( [foo] => Array ( [bar] => Array ( [baz] => bat ) ) )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/mMYEM on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/mMYEM on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/mMYEM on line 3
Process exited with code 255.

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