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<?php $details = array( array('year' => '1990'), array('year' => '1995'), array('condition' => 'working'), array('type' => 'bus'), array('type' => 'car'), array('type' => 'bike'), ); $details = array_column($details, 'year'); print_r($details);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 1990 [1] => 1995 )

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