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Use ksort() to sort by city name

<? $population = array('New York, NY' => 8008278,                     'Los Angeles, CA' => 3694820,                     'Chicago, IL' => 2896016,); $total_population = 0; ksort($population); print "<table><tr><th>City</th><th>Population</th></tr>\n"; foreach ($population as $city => $people) {     $total_population += $people;     print "<tr><td>$city</td><td>$people</td></tr>\n";      } print "<tr><td>Total</td><td>$total_population</td></tr>\n"; print "</table>\n"; ?>