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<?php var_export(implode(['a', 'b'], '.'));
Output for 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Fatal error: Uncaught TypeError: implode(): Argument #1 ($separator) must be of type string, array given in /in/5h9GH:3 Stack trace: #0 /in/5h9GH(3): implode(Array, '.') #1 {main} thrown in /in/5h9GH on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33
Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /in/5h9GH:3 Stack trace: #0 /in/5h9GH(3): implode(Array, '.') #1 {main} thrown in /in/5h9GH on line 3
Process exited with code 255.
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: implode(): Passing glue string after array is deprecated. Swap the parameters in /in/5h9GH on line 3 'a.b'
Output for 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, 7.4.26
'a.b'
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/5h9GH on line 3
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/5h9GH on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/5h9GH on line 3
Process exited with code 255.

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