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<?php date_default_timezone_set('America/New_York'); $date = new DateTime(); $date::jsonSerialize(); echo json_encode($date,JSON_FORCE_OBJECT); var_dump(json_last_error(), json_last_error_msg()); function isSerializable( $var ) { try { serialize( $var ); return TRUE; } catch( Exception $e ) { return FALSE; } } var_dump( isSerializable( array() ) ); // bool(true) var_dump( isSerializable( function() {} ) ); // bool(false) var_dump( isSerializable( array( function() {} ) ) );
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined method DateTime::jsonSerialize() in /in/DCvSp:7 Stack trace: #0 {main} thrown in /in/DCvSp on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Call to undefined method DateTime::jsonSerialize() in /in/DCvSp on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/DCvSp on line 7
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM in /in/DCvSp on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/DCvSp on line 7
Process exited with code 255.

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