稅後工資計算

<?phpheader("Content-type: text/html; charset=utf-8");/*薪水房屋公積金比率養老保險比率醫學保險比率*/function after_sleep($salary,$housefund_ratio=0.1,$person_insurance_ratio=.08,$medical_insurance_ratio=.04){    $base = 3500;    $housefund = $salary * $housefund_ratio;  #.10 .08    $person_insurance = $salary * $person_insurance_ratio;    $medical_insurance = $salary * $medical_insurance_ratio;    $insurance=($housefund + $person_insurance +$medical_insurance);      if ($salary - $insurance   < $base ){       return $salary - $insurance;    }    $taxable_income= ($salary - $insurance -$base  );             if ($taxable_income  <=1500 ){        $ratio = .03;        $deduct = 0;    }else if ($taxable_income > 1500 && $taxable_income <=4500)    {        $ratio = .1;        $deduct = 105;                 }else if ($taxable_income > 4500 && $taxable_income <=9000)    {        $ratio = .2;        $deduct = 555;     } else if ($taxable_income > 9000 && $taxable_income <= 35000)  {                $ratio = .25;        $deduct = 1005;    } else if ($taxable_income > 35000 && $taxable_income <= 55000)    {        $ratio = .3;        $deduct = 2755;    }        $tax = $taxable_income * $ratio-$deduct;        $money = $salary -$insurance-$tax;    return $money;}  echo "稅前\t稅後\n";for ($i=5000;$i<=50000;$i+=3000)echo  $i,"\t",after_sleep($i,.08),"\n";

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