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<?php $characteristics['key'] = 'string'; $key = 'key'; var_dump(implode(',', $characteristics[$key]));
Output for rfc.property-hooks, git.master, git.master_jit
Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /in/vuNBL:6 Stack trace: #0 /in/vuNBL(6): implode(',', 'string') #1 {main} thrown in /in/vuNBL on line 6
Process exited with code 255.

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