Online PHP editor | output for W53KK

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: Fatal error: Uncaught TypeError: Unsupported operand types: string + string in /in/W53KK:6 Stack trace: #0 {main} thrown in /in/W53KK on line 6
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: A non-numeric value encountered in /in/W53KK on line 6 Warning: A non-numeric value encountered in /in/W53KK on line 6 array(2) { ["date"]=> string(10) "23.06.2013" [0]=> string(4) "test" } int(0) string(4) "From"
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33: array(2) { ["date"]=> string(10) "23.06.2013" [0]=> string(4) "test" } int(0) string(4) "From"
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/W53KK on line 3
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 '[' in /in/W53KK on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/W53KK on line 3
Process exited with code 255.