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run code in 300+ PHP versions simultaneously
<?php class Foo implements JSONSerializable { public $barPublic = 1; protected $barProtected = 2; private $barPrivate = 3; public function jsonSerialize() { return array( 'barPublic' => $this->barPublic, 'barProtected' => $this->barProtected, 'barPrivate' => $this->barPrivate, ); } } $foo = new Foo(); var_dump(json_encode($foo));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 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/bSJWU on line 7 string(47) "{"barPublic":1,"barProtected":2,"barPrivate":3}"
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
string(47) "{"barPublic":1,"barProtected":2,"barPrivate":3}"
Output for 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Interface 'JSONSerializable' not found in /in/bSJWU on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.4
Fatal error: Class 'JSONSerializable' not found in /in/bSJWU on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/bSJWU on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/bSJWU on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/bSJWU on line 2
Process exited with code 255.
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