$eye_color = array (
'chris' => 'brown',
'dan' => 'blue',
'anthony' => 'grey'
);
print_r($eye_color);
$eye_color['dan'] = 'hazel';
print_r($eye_color);
$eye_color = array (
'chris' => 'brown',
'dan' => 'blue',
'anthony' => 'grey'
);
print_r($eye_color);
$eye_color['dan'] = 'hazel';
print_r($eye_color);