Online PHP editor | output for RYmAi

Output for 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: Warning: preg_replace(): Compilation failed: PCRE2 does not support \F, \L, \l, \N{name}, \U, or \u at offset 3 in /in/RYmAi on line 2
Output for 8.0.13: Fatal error: Uncaught Error: Class "Normalizer" not found in /in/RYmAi:2 Stack trace: #0 {main} thrown in /in/RYmAi on line 2
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33: Fatal error: Uncaught Error: Class 'Normalizer' not found in /in/RYmAi:2 Stack trace: #0 {main} thrown in /in/RYmAi on line 2
Process exited with code 255.
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.32: ̧̧̧̧̆̈̆.̧̈
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33: Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N{name}, \U, or \u at offset 2 in /in/RYmAi on line 2
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45: Fatal error: Class 'Normalizer' not found in /in/RYmAi on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected ')', expecting '(' in /in/RYmAi on line 2
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 ')', expecting '(' in /in/RYmAi on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `'('' in /in/RYmAi on line 2
Process exited with code 255.