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<?php $json = json_encode(['one' => 1, 'two' => 2]); var_export(implode(',', json_decode($json)));
Output for 8.0.0 - 8.0.3
Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, stdClass given in /in/eZBFQ:4 Stack trace: #0 /in/eZBFQ(4): implode(',', Object(stdClass)) #1 {main} thrown in /in/eZBFQ on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.13
Warning: implode(): Invalid arguments passed in /in/eZBFQ on line 4 NULL