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run code in 300+ PHP versions simultaneously
<?php class A { private $json = "{\"prop1\": 1}"; public function __toString() { return $this->json; } } $obj = new \stdClass; $obj->prop0 = new A; var_dump(json_encode($obj)); var_dump((string) $obj);
Output for 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
string(12) "{"prop0":{}}" Fatal error: Uncaught Error: Object of class stdClass could not be converted to string in /in/keOiA:11 Stack trace: #0 {main} thrown in /in/keOiA on line 11
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
string(12) "{"prop0":{}}" Recoverable fatal error: Object of class stdClass could not be converted to string in /in/keOiA on line 11
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
string(12) "{"prop0":{}}" Catchable fatal error: Object of class stdClass could not be converted to string in /in/keOiA on line 11
Process exited with code 255.

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