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<?php $obj = new stdClass(); $obj->bar = "123"; $data = ["foo" => "bar"]; $key = "foo"; echo $obj->{ $data[$key] },"\n"; echo $obj->{ ${'data'}[$key] },"\n"; echo "{$obj->{ $data[$key] }}\n"; echo $obj->{ $data[$key]},"\n"; echo "{$obj->{ ${'data'}[$key] }}\n"; echo $obj->{ ${'data'}[$key] },"\n"; echo "{${'obj'}->{ ${'data'}[$key] }}\n"; echo ${'obj'}->{ ${'data'}[$key] },"\n"; echo $obj->${'data'}[$key]=456;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
123 123 123 123 123 123 123 123 Warning: Array to string conversion in /in/e6noS on line 21 456
Output for 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
123 123 123 123 123 123 123 123 Notice: Array to string conversion in /in/e6noS on line 21 456
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.3.32 - 7.3.33
123 123 123 123 123 123 123 123 456

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