Online PHP editor | output for eGRoE

Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught ValueError: mb_encode_numericentity(): Argument #3 ($encoding) must be a valid encoding, "1" given in /in/eGRoE:3 Stack trace: #0 /in/eGRoE(3): mb_encode_numericentity('\xF4\x90\x80\x80', Array, '1') #1 {main} thrown in /in/eGRoE on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28: Fatal error: Uncaught ValueError: mb_encode_numericentity(): Argument #3 ($encoding) must be a valid encoding, "1" given in /in/eGRoE:5 Stack trace: #0 /in/eGRoE(5): mb_encode_numericentity('\xF4\x90\x80\x80', Array, '1') #1 {main} thrown in /in/eGRoE on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33: Warning: mb_encode_numericentity(): Unknown encoding "1" in /in/eGRoE on line 5 bool(false)
Output for 4.3.0 - 4.3.1: Warning: mb_encode_numericentity() [http://www.php.net/function.mb-encode-numericentity]: Unknown encoding "1" in /in/eGRoE on line 5 bool(false)