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<?php interface HydrationInterface { static function dehydrate($obj); static function hydrate($content); } class Foo implements JsonSerializable,HydrationInterface { protected $secret, $problem; public function __construct($secret) { $this->secret = $secret; } public function setProblem(Foo $p) { $this->problem = $p; } public function JsonSerialize() { return self::dehydrate($this); } public static function dehydrate($obj) { return get_object_vars($obj); } public static function hydrate($content) { // var_dump($content); exit(); $o = new static(''); $o->secret = $content->secret; if( ! is_null($content->problem) ) { $o->problem = Foo::hydrate($content->problem); } return $o; } } $f = new Foo('secret!'); $f->setProblem(new Foo('second level!')); $h = Foo::hydrate(json_decode('{"secret":"secret!","problem":{"secret":"second level!","problem":null}}')); var_dump(json_encode($f), $h);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Return type of Foo::JsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/DonQq on line 19 string(72) "{"secret":"secret!","problem":{"secret":"second level!","problem":null}}" object(Foo)#5 (2) { ["secret":protected]=> string(7) "secret!" ["problem":protected]=> object(Foo)#6 (2) { ["secret":protected]=> string(13) "second level!" ["problem":protected]=> NULL } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Deprecated: Return type of Foo::JsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/DonQq on line 19 string(72) "{"secret":"secret!","problem":{"secret":"second level!","problem":null}}" object(Foo)#5 (2) { ["secret":protected]=> string(7) "secret!" ["problem":protected]=> object(Foo)#6 (2) { ["secret":protected]=> string(13) "second level!" ["problem":protected]=> NULL } }
Output for 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
string(72) "{"secret":"secret!","problem":{"secret":"second level!","problem":null}}" object(Foo)#5 (2) { ["secret":protected]=> string(7) "secret!" ["problem":protected]=> object(Foo)#6 (2) { ["secret":protected]=> string(13) "second level!" ["problem":protected]=> NULL } }
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