Online PHP editor | output for Bi5Kl

Output for 8.4.1 - 8.4.7: Deprecated: Implicit conversion from float 4.2 to int loses precision in /in/Bi5Kl on line 4 string(3) "1.0" string(3) "0.8"
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.21: Parse error: syntax error, unexpected token "->", expecting ")" in /in/Bi5Kl on line 4
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR), expecting ')' in /in/Bi5Kl on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34: Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR), expecting ',' or ')' in /in/Bi5Kl on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR) in /in/Bi5Kl on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/Bi5Kl on line 4
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: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Bi5Kl on line 4 Parse error: syntax error, unexpected T_STRING in /in/Bi5Kl on line 4
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: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Bi5Kl on line 4 Parse error: parse error, unexpected T_STRING in /in/Bi5Kl on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/Bi5Kl on line 4 Parse error: parse error in /in/Bi5Kl on line 4
Process exited with code 255.