Online PHP editor | output for I0Rtf

Output for 5.2.3 - 5.2.17, 5.3.0 - 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, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: array(0) { }
Output for 5.2.2: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.2.2" [1]=> string(8) "Foo: Baz" }
Output for 5.2.1: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.2.1" [1]=> string(8) "Foo: Baz" }
Output for 5.2.0: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.2.0" [1]=> string(8) "Foo: Baz" }
Output for 5.1.6: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.6" [1]=> string(8) "Foo: Baz" }
Output for 5.1.5: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.5" [1]=> string(8) "Foo: Baz" }
Output for 5.1.4: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.4" [1]=> string(8) "Foo: Baz" }
Output for 5.1.3: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.3" [1]=> string(8) "Foo: Baz" }
Output for 5.1.2: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.2" [1]=> string(8) "Foo: Baz" }
Output for 5.1.1: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.1" [1]=> string(8) "Foo: Baz" }
Output for 5.1.0: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.1.0" [1]=> string(8) "Foo: Baz" }
Output for 5.0.5: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.5" [1]=> string(8) "Foo: Baz" }
Output for 5.0.4: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.4" [1]=> string(8) "Foo: Baz" }
Output for 5.0.3: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.3" [1]=> string(8) "Foo: Baz" }
Output for 5.0.2: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.2" [1]=> string(8) "Foo: Baz" }
Output for 5.0.1: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.1" [1]=> string(8) "Foo: Baz" }
Output for 5.0.0: array(2) { [0]=> string(23) "X-Powered-By: PHP/5.0.0" [1]=> string(8) "Foo: Baz" }
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: headers_list() in /in/I0Rtf on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: headers_list() in /in/I0Rtf on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: headers_list() in /in/I0Rtf on line 6