极客笔记PHP 继承任务
使用继承创建程序以计算三角形的面积.
解决方案
<?php
classgetdata
{
public h;
publicb;
public function method1()
{
this->h=_REQUEST['height'];
this->b=_REQUEST['base'];
}
}
classfindarea extends getdata
{
public area;
public function method2()
{this->area= (this->h*this->b)/2;
echo "Area of Triangle is : ".this->area;
}
}
if(isset(_REQUEST['submit']))
{
obj = new findarea();obj->method1();
$obj->method2();
}
?>
<html>
<head>
</head>
<body>
<form method= "post">
<table align ="left" border="1">
<tr>
<td> Enter Height </td>
<td><input type = "text" name="height"/></td>
</tr>
<tr>
<td> Enter Base </td>
<td><input type = "text" name="base"/></td>
</tr>
<tr>
<td align ="center" colspan="2">
<input type= "submit"name="submit"value="click"/>
</td>
</tr>
</table>
</form>
</body>
</html>
输出：
