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<?php $input = array( array( '1' => 'google' ), array( '2' => 'technology' ) ); echo implode(', ', array_map(function ($entry) { return $entry[0]; }, $input));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key 0 in /in/Efjp6 on line 12 Warning: Undefined array key 0 in /in/Efjp6 on line 12 ,

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