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<?php //echo ['p1', 'p2', 'p3'].map(function($name){ return ':' . $name; }).join(','); echo array_map(function($name) { return ':' . $name; }, ['p1', 'p2', 'p3']).join(','); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: join(): Argument #1 ($pieces) must be of type array, string given in /in/b4flP:4 Stack trace: #0 /in/b4flP(4): join(',') #1 {main} thrown in /in/b4flP on line 4
Process exited with code 255.

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