整体代码展示
1,项目目录
2,所有代码展示:
index.php:
<!doctype html> <html> <head> <meta charset="utf-8"> <title>图形计算器</title> <style> * { margin: 0px; padding: 0px; } #contains { width: 500px; margin: 20px auto; background: skyblue; text-align: center; } h1 { width: 500px; height: 60px; } a { font-size: 20px; text-decoration: none; } #footer { width: 300px; background: #fff; margin: 0 auto; padding: 5px 10px; border-radius: 150px; } </style> </head> <body> <div id="contains"> <h1>简易图形计算器</h1> <a href='index.php?action=rect'>矩形</a> | <a href='index.php?action=triangle'>三角形</a> | <a href='index.php?action=cirle'>圆形</a> | <a href='index.php?action=sphere'>球体</a> <hr> <?php ini_set("display_errors", "On"); //开启错误调试 //设置错误报告的级别,除了无关紧要的'注意',其他的报告都输出 error_reporting(E_ALL & ~E_NOTICE); function __autoload($classname) { //魔术方法 自动加载类 require "./$classname.class.php"; //将类名转化成小写 } if (!empty($_GET['action'])) { // echo "传送成功"; $classname = ucfirst($_GET['action']); $shape = new $classname($_POST); $shape->view($_POST); if (isset($_POST['sub'])) { echo "<div id='footer'>"; if($shape->name!='球体'){ if ($shape->yan($_POST)) { echo "<b>".$shape->name."的周长".$shape->zhou()."</b>"."<br>"; echo "<br>"; echo "<b>".$shape->name."的面积".$shape->area()."</b>"."<br>"; }else { echo "<b>错误:$shape->error</b>"; } echo "</div>"; }else{ if ($shape->yan($_POST)) { echo "<b>".$shape->name."的表面积".$shape->area()."</b>"."<br>"; echo "<br>"; echo "<b>".$shape->name."的体积".$shape->zhou()."</b>"."<br>"; }else { echo "<b>错误:$shape->error</b>"; } echo "</div>"; } } } else { echo "请选择一个图形"; } ?> </div> </body> </html>
Shape.class.php:
<?php abstract class Shape { private $name; private $error; abstract function area(); abstract function zhou(); abstract function view($arr); abstract function yan($arr); } ?>
Rect.class.php:
<?php class Rect extends Shape { private $width; private $height; function __construct($arr = array()) { if (!empty($arr)) { $this->width = $arr['width']; $this->height = $arr['height']; } $this->name = "矩形"; $this->error = ''; } function area() { return $this->width * $this->height; } function zhou() { return ($this->width+$this->height) * 2; } function view($arr) { $form=''; $form .= "<form action='index.php?action=rect' method='post'>"; $form .= "请输入".$arr['name']."的宽度:<input type='text' name='width' value='".$_POST['width']."'/><br>"; $form .= "<br>"; $form .= "请输入".$arr['name']."的长度:<input type='text' name='height' value='".$_POST['height']."'/><br>"; $form .= "<br>"; $form .= "<input type='submit' name='sub' value='提交'/> "; $form .= "<input type='reset' name='ret' value='重置'/>"; $form .= "</form>"; echo $form; } function yan($arr) { $bz = true; if ($arr['width']< 0) { $this->error .= "宽度小于0;"; $bz = false; } else { if (!is_numeric($arr['width'])) { $this->error .= "宽不是数字;"; $bz = false; } } if ($arr['height']< 0) { $this->error .= "宽度小于0;"; $bz = false; } else { if (!is_numeric($arr['height'])) { $this->error .= "高不是数字;"; $bz = false; } } return $bz; } } ?>
Triangle.class.php:
<?php class Triangle extends Shape { private $bian1; private $bian2; private $bian3; function __construct($arr = array()) { if (!empty($arr)) { $this->bian1 = $arr['bian1']; $this->bian2 = $arr['bian2']; $this->bian3 = $arr['bian3']; } $this->name = "三角形"; $this->error = ''; } function area() { $p = ($this->bian1 + $this->bian2 + $this->bian3) / 2; // p(p-a)(p-b)(p-c) return sqrt($p*($p-$this->bian1)*($p-$this->bian2)*($p-$this->bian3)); } function zhou() { return $this->bian1+$this->bian2+$this->bian3; } function view($arr) { $form=''; $form .= "<form action='index.php?action=triangle' method='post'>"; $form .= "请输入".$arr['name']."的第一条边:<input type='text' name='bian1' value='".$_POST['bian1']."'/><br>"; $form .= "<br>"; $form .= "请输入".$arr['name']."的第二条边:<input type='text' name='bian2' value='".$_POST['bian2']."'/><br>"; $form .= "<br>"; $form .= "请输入".$arr['name']."的第三条边:<input type='text' name='bian3' value='".$_POST['bian3']."'/><br>"; $form .= "<br>"; $form .= "<input type='submit' name='sub' value='提交'/> "; $form .= "<input type='reset' name='ret' value='重置'/>"; $form .= "</form>"; echo $form; } function yan($arr) { $bz = true; if ($arr['bian1']< 0) { $this->error .= "第一条边小于0;"; $bz = false; } else { if (!is_numeric($arr['bian1'])) { $this->error .= "第一条边不是数字;"; $bz = false; } } if ($arr['bian2']< 0) { $this->error .= "第二条边小0;"; $bz = false; } else { if (!is_numeric($arr['bian2'])) { $this->error .= "第二条边不是数字;"; $bz = false; } } if ($arr['bian2']< 0) { $this->error .= "第三条边小于0;"; $bz = false; } else { if (!is_numeric($arr['bian2'])) { $this->error .= "第三条边不是数字;"; $bz = false; } } if (($this->bian1+$this->bian2) < $this->bian3 ||($this->bian1+$this->bian3) < $this->bian2 ||($this->bian2+$this->bian3) < $this->bian1) { $this->error .= "三条边不能构成三角形"; $bz = false; } return $bz; } } ?>
Cirle.class.php:
<?php class Cirle extends Shape { private $r; function __construct($arr = array()) { if (!empty($arr)) { $this->r = $arr['r']; } $this->name = "圆形"; $this->error = ''; } function area() { return pi()* $this->r* $this->r; ; } function zhou() { return 2*$this->r*pi(); } function view($arr) { $form=''; $form .= "<form action='index.php?action=cirle' method='post'>"; $form .= "请输入".$arr['name']."的半径:<input type='text' name='r' value='".$_POST['r']."'/><br>"; $form .= "<br>"; $form .= "<input type='submit' name='sub' value='提交'/> "; $form .= "<input type='reset' name='ret' value='重置'/>"; $form .= "</form>"; echo $form; } function yan($arr) { $bz = true; if ($arr['r']< 0) { $this->error .= "半径小于0;"; $bz = false; } else { if (!is_numeric($arr['r'])) { $this->error .= "半径不是数字;"; $bz = false; } } return $bz; } } ?>
Sphere.class.php:
<?php class Sphere extends Shape { private $r; function __construct($arr = array()) { if (!empty($arr)) { $this->r = $arr['r']; } $this->name = "球体"; $this->error = ''; } //4π(R的平方),体积 4/3π*r的立方 //球的面积 function area() { return 4*pi()* $this->r* $this->r; ; } //求的体积 function zhou() { return pow((4/3)*$this->r*pi(),3); } function view($arr) { $form=''; $form .= "<form action='index.php?action=sphere' method='post'>"; $form .= "请输入".$arr['name']."的半径:<input type='text' name='r' value='".$_POST['r']."'/><br>"; $form .= "<br>"; $form .= "<input type='submit' name='sub' value='提交'/> "; $form .= "<input type='reset' name='ret' value='重置'/>"; $form .= "</form>"; echo $form; } function yan($arr) { $bz = true; if ($arr['r']< 0) { $this->error .= "半径小于0;"; $bz = false; } else { if (!is_numeric($arr['r'])) { $this->error .= "半径不是数字;"; $bz = false; } } return $bz; } } ?>