Online PHP editor | output for YXeEg

Output for 7.0.6 - 7.0.33, 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 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5: string(22) "LATIN CAPITAL LETTER A" string(22) "LATIN CAPITAL LETTER A" string(0) "" NULL
Output for 8.0.13: Fatal error: Uncaught Error: Class "IntlChar" not found in /in/YXeEg:4 Stack trace: #0 {main} thrown in /in/YXeEg on line 4
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.33: Fatal error: Uncaught Error: Class 'IntlChar' not found in /in/YXeEg:4 Stack trace: #0 {main} thrown in /in/YXeEg on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.5: string(22) "LATIN CAPITAL LETTER A" string(22) "LATIN CAPITAL LETTER A" string(0) "" bool(false)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Fatal error: Class 'IntlChar' not found in /in/YXeEg on line 4
Process exited with code 255.