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<?php$fp = fopen("proj4b.dat", r);   print "               Biweekly Payroll Report For Kept Sales Company <br/>";   print " <br/>";   print "Name           Regular Pay     Commission     Gross Pay      Net Pay<br/>";   print " <br/>";while (!feof($fp) ){   $employee_name = fgets($fp, 14);   if(trim($employee_name) == "") continue;   $pay_rate = fgets($fp, 6);   if(trim($pay_rate) == "") continue;   $num_sales = fgets($fp, 6);   if(trim(num_sales) == "") continue;      calc($employee_name, $pay_rate, $num_sales, &$regular_pay, &$commission,         &$gross_pay, &$twentyfive_precent, $format);}   fclose($fp);function calc($employee_name, $pay_rate, $num_sales, $regular_pay, $commission,         $gross_pay, $twentyfive_precent, $format){   $regular_pay = $pay_rate  * 80;   $regular_pay = number_format($regular_pay,2,".","");   $commission = $num_sales * .07;   $commission = number_format($regular_pay,2,".","");   $gross_pay = $regular_pay + $commission;   $gross_pay = number_format($regular_pay,2,".","");   $twentyfive_percent = $gross_pay * .25;   $net_pay = $gross_pay - $twentyfive_percent;   $net_pay = number_format($regular_pay,2,".","");   $format = "%s  %7s         %7s        %7s        %7s   <br/>";   printf($format, $employee_name, $regular_pay,  $commission, $gross_pay, $net_pay);}?>