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<?php // Store JSON data in a PHP variable $json = '{"data":[{"name":"John","sex":"M","address":{"unit":"7"}}]}'; var_dump(json_decode($json)); ?>
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
object(stdClass)#3 (1) { ["data"]=> array(1) { [0]=> object(stdClass)#1 (3) { ["name"]=> string(4) "John" ["sex"]=> string(1) "M" ["address"]=> object(stdClass)#2 (1) { ["unit"]=> string(1) "7" } } } }

preferences:
120.43 ms | 404 KiB | 227 Q