Data Type Php

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  4. Add the prefix pts to each array key and then make each variable that results into a reference
$points = array('home' => 21, 'away' => 13); 
extract($points, EXTR_REFS|EXTR_PREFIX_ALL, 'pts'); 
$pts_home -= 4; 
$pts_away += 6; 
printf("

%s

", var_export($points, TRUE)); 
?>