php趣味编程-php求个人所得税

<?phpheader("Content-Type: text/html; charset=utf-8");/*个人所得税 以3500后的数字1 500 5 02 500-2000 10 25=500*0.53 2000-5000 15 25+150 = 1754 5000-20000 20 25+150+450 = 6255 20000-40000 25 25+150+450+15000*0.2=625+3000=36256 40000-60000 30 3625 + (40000-20000)*0.25 =3625 +5000=86257 60000-80000 35 8625+6000 = 146258 80000-100000 40 14625 + 2*0.35 = 216259 100000-..... 45 21625 + 2*0.4 = 296254000 - 3500 = 500*0.05=254100 -3500 = 610 = 500*0.05+110*0.10=25+118000 -3500 = 4500 = 500*0.05 + (2000-500)*0.1 + 2500*0.15*/?><?php $money = 1108800; //个人的月收入 $jibie = $money - 3500;//交税的钱 if($jibie <= 500) { $a = $jibie * 0.05;//所得税-就是每个月交的税 } else if($jibie <= 2000){ $a = 25 +($jibie - 500)*0.1; } else if($jibie <= 5000){ $a = 175 + ($jibie - 2000)*0.15; } else if($jibie <=20000){ $a = 625 + ($jibie - 5000)*0.2; } else if($jibie <= 40000){ $a = 3625+($jibie - 20000)*0.25; } else if($jibie <=60000){ $a = 8625 + ($jibie - 40000)*0.3; } else if($jibie <=80000){ $a = 14625 + ($jibie - 60000)*0.35; } else if($jibie <=100000){ $a = 21625 +($jibie - 80000)*0.4; } else{ $a = 29625+($jibie - 100000)*0.45; } //echo $a;?><?php /* 累积的不要手动算 */ $salary = array(0,500,2000,5000,20000,40000,60000,80000,100000);//用来存个人所得的钱 $rate =array(5,10,15,20,25,30,35,40,45);//税息 $moneys = 5000;//假设月收入 $b = $moneys - 3500; $index = 0; $sum = 0; for($i=0;$i<sizeof($salary);$i++){ if($b <$salary[$i]){ $index = $i; break; } } //循环得到扣除累计算 for($i=0;$i<$index;$i++) { $sum = $sum+( $salary[$i+1] - $salary[$i] )*$rate[$i]*0.01; } $a = $sum + ($moneys-$salary[$index-1])*$rate[$index-1]*0.01; echo '月收入:'.$moneys.'交税是：'.$a;?>