Online PHP editor | output for SliR1

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.14, 8.4.16 - 8.4.17, 8.5.0 - 8.5.3: bool(true) bool(false) Fatal error: Uncaught Exception: Serialization of 'ReflectionClass' is not allowed in /in/SliR1:8 Stack trace: #0 /in/SliR1(8): serialize(Object(ReflectionClass)) #1 {main} thrown in /in/SliR1 on line 8
Process exited with code 255.
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33: bool(true) bool(false) Malformed Reflection object: Internal error: Failed to retrieve the reflection object
Output for 5.3.3 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33: bool(true) bool(false) Fatal error: ReflectionClass::getDocComment(): Internal error: Failed to retrieve the reflection object in /in/SliR1 on line 10
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.2: bool(true) bool(false) Fatal error: Internal error: Failed to retrieve the reflection object in /in/SliR1 on line 10
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected '{' in /in/SliR1 on line 9
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: Parse error: parse error, unexpected '{' in /in/SliR1 on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/SliR1 on line 9
Process exited with code 255.