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run code in 300+ PHP versions simultaneously
<?php $name= "xxx"; $title= "xxx"; $arrayGender = array("Boy","Girl"); $arrayName = array("John", "Rosy"); $obj = new stdClass; $obj->name = $name; $obj->title = $title; $obj->children = [$arrayGender, $arrayName]; echo json_encode($obj);
Output for 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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
{"name":"xxx","title":"xxx","children":[["Boy","Girl"],["John","Rosy"]]}

preferences:
180.09 ms | 408 KiB | 5 Q