PHP自学日志：函数的应用（一）

 1 function result($num1,$num2,$symbol){
 2   switch ($symbol){
 3     case "+":
 4         $result=$num1+$num2;
 5         break;
 6     case "-":
 7         $result=$num1-$num2;
 8         break;
 9     case "*":
10         $result=$num1*$num2;
11         break;
12     case "/":
13         $result=$num1/$num2;
14         break;
15     default:
16         echo "你输入的运算符有问题，请重新输入!";
17   }
18   echo $num1.$symbol.$num2.‘=‘.$result;
19 }
20 result(1,2,"-");

 1 function table($line,$row,$width,$tabtitle){
 2   echo "<table align=‘center‘ width=‘$width‘ border=‘1‘>";
 3   echo ‘<caption><h1>‘.$tabtitle.‘</h1></caption>‘;
 4   for($i=0;$i<$line;$i++){
 5     if ($i%2==0){
 6       echo ‘<tr bgcolor=#ffffff>‘;
 7     }else {
 8       echo ‘<tr bgcolor=#cccccc>‘;
 9     }
10     
11       for($b=0;$b<$row;$b++){
12         echo ‘<td>‘.($i*$row+$b+1).‘</td>‘;
13       }
14     echo ‘</tr>‘;
15   }
16   echo ‘</table>‘;
17  
18 }
19 table(5,2,800,"Title One");
20 table(4,5,800,"Title Two");
21 table(10,10,600,"Title Three");