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run code in 200+ php & hhvm versions
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<?php $a = json_decode('{"3":{"friend":45,"all":100},"2":{"friend":30,"all":50},"1":{"friend":25,"all":25}}'); $b = 3; var_dump($a->$b); /*var_dump($a['3']); var_dump($a["3"]); var_dump($a[(string) 3]);*/
Output for 7.0.0 - 7.3.0rc4
object(stdClass)#1 (2) { ["friend"]=> int(45) ["all"]=> int(100) }
Output for 5.2.0 - 5.6.21
object(stdClass)#2 (2) { ["friend"]=> int(45) ["all"]=> int(100) }
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/b9PCd on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/b9PCd on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/b9PCd on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/b9PCd on line 2