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<?php $comma_separated = implode(',', unserialize( urldecode( serialize('1 2') ))); echo $comma_separated;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /in/SM7IK:3 Stack trace: #0 /in/SM7IK(3): implode(',', '1 2') #1 {main} thrown in /in/SM7IK on line 3
Process exited with code 255.
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: implode(): Invalid arguments passed in /in/SM7IK on line 3
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 - 5.2.4
Warning: implode(): Bad arguments. in /in/SM7IK on line 3
Output for 4.3.0 - 4.3.1
Warning: implode() [http://www.php.net/function.implode]: Bad arguments. in /in/SM7IK on line 3

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