创建程序以使用继承查找Triangle区域。
解
<?php
classgetdata
{
public $h;
public $b;
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
来源：
https://www.srcmini02.com/29231.html
