Online PHP editor | output for aAJEL

Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/aAJEL on line 3 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/aAJEL on line 3
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28: Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/aAJEL on line 11 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/aAJEL on line 11
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 11 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 11
Output for 7.0.20, 7.1.5 - 7.1.33, 7.2.0 - 7.2.33: Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 7 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 7
Output for 7.0.0 - 7.0.14, 7.1.0: Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 17 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 17
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28: Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 33 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/aAJEL on line 33
Output for 4.3.0 - 4.3.1: Warning: array_flip() [http://www.php.net/function.array-flip]: Can only flip STRING and INTEGER values! in /in/aAJEL on line 33 Warning: array_flip() [http://www.php.net/function.array-flip]: Can only flip STRING and INTEGER values! in /in/aAJEL on line 33