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run code in 300+ PHP versions simultaneously
<?php $obj = new stdClass(); $obj->bar = "xyz"; $data = array("foo" => "bar"); $key = "foo"; echo $obj->{$data[$key]}; echo "{$obj->{$data[$key]}}"; //echo $obj->${data[$key]}; syntax error echo $obj->{${'data'}[$key]}; echo "{$obj->{${'data'}[$key]}}";
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
xyzxyzxyzxyz

preferences:
150.88 ms | 404 KiB | 194 Q