Online PHP editor | output for pBkiu

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: float(1.2345678901234567E+19) string(20) "12345678901234567890"
Output for 5.4.11 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: float(1.2345678901235E+19) string(20) "12345678901234567890"
Output for 5.4.0 - 5.4.10: float(1.2345678901235E+19) float(1.2345678901235E+19)
Output for 5.3.0 - 5.3.29: float(1.2345678901235E+19) Notice: Use of undefined constant JSON_BIGINT_AS_STRING - assumed 'JSON_BIGINT_AS_STRING' in /in/pBkiu on line 5 Warning: json_decode() expects at most 3 parameters, 4 given in /in/pBkiu on line 5 NULL
Output for 5.2.1 - 5.2.17: float(1.2345678901235E+19) Notice: Use of undefined constant JSON_BIGINT_AS_STRING - assumed 'JSON_BIGINT_AS_STRING' in /in/pBkiu on line 5 Warning: json_decode() expects at most 2 parameters, 4 given in /in/pBkiu on line 5 NULL
Output for 5.2.0: NULL Notice: Use of undefined constant JSON_BIGINT_AS_STRING - assumed 'JSON_BIGINT_AS_STRING' in /in/pBkiu on line 5 Warning: json_decode() expects at most 2 parameters, 4 given in /in/pBkiu on line 5 NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Call to undefined function json_decode() in /in/pBkiu on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: json_decode() in /in/pBkiu on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: json_decode() in /in/pBkiu on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: json_decode() in /in/pBkiu on line 4