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<?php class StringValue implements JsonSerializable { public function __construct($string) { $this->string = (string) $string; } public function jsonSerialize() { return $this->string; } } echo json_encode(new StringValue('Hello!'), JSON_PRETTY_PRINT);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Return type of StringValue::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/GNqRb on line 8 Deprecated: Creation of dynamic property StringValue::$string is deprecated in /in/GNqRb on line 5 "Hello!"
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 StringValue::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/GNqRb on line 8 Deprecated: Creation of dynamic property StringValue::$string is deprecated in /in/GNqRb on line 5 "Hello!"
Output for 8.1.0 - 8.1.28
Deprecated: Return type of StringValue::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/GNqRb on line 8 "Hello!"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
"Hello!"
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164.47 ms | 402 KiB | 161 Q