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<?php $anna_array = array('Soccer' => "10", 'Basketball' => "20", 'Tennis' => "30", 'Atletics' => "40", 'Volleyball' => "50"); $john_array = array('Soccer' => "15", 'Basketball' => "15", 'Atletics' => "45"); $anna_activities = array_intersect_key($anna_array, $john_array); $john_activities = array_intersect_key($john_array, $anna_array); var_dump($anna_activities, $john_activities);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["Soccer"]=> string(2) "10" ["Basketball"]=> string(2) "20" ["Atletics"]=> string(2) "40" } array(3) { ["Soccer"]=> string(2) "15" ["Basketball"]=> string(2) "15" ["Atletics"]=> string(2) "45" }

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