Online PHP editor | output for lG9Sn

Output for 5.4.0 - 5.4.25, 5.4.34 - 5.4.45, 5.5.24 - 5.5.28, 5.5.31 - 5.5.33, 5.5.35, 5.6.8 - 5.6.12, 5.6.16 - 5.6.19, 5.6.21 - 5.6.28, 7.0.0 - 7.0.4, 7.0.6 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: string(0) ""
Output for 8.0.13: Fatal error: Uncaught Error: Class "Locale" not found in /in/lG9Sn:3 Stack trace: #0 {main} thrown in /in/lG9Sn on line 3
Process exited with code 255.
Output for 7.0.5, 7.3.32 - 7.3.33, 7.4.33: Fatal error: Uncaught Error: Class 'Locale' not found in /in/lG9Sn:3 Stack trace: #0 {main} thrown in /in/lG9Sn on line 3
Process exited with code 255.
Output for 5.4.26 - 5.4.32, 5.5.29 - 5.5.30, 5.5.34, 5.6.13 - 5.6.15, 5.6.20: Fatal error: Class 'Locale' not found in /in/lG9Sn on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[', expecting ')' in /in/lG9Sn on line 3
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/lG9Sn on line 3 Parse error: syntax error, unexpected '[', expecting ')' in /in/lG9Sn 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: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/lG9Sn on line 3 Parse error: parse error, unexpected '[', expecting ')' in /in/lG9Sn on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/lG9Sn on line 3 Parse error: parse error, expecting `')'' in /in/lG9Sn on line 3
Process exited with code 255.