本文整理汇总了PHP中Rectangle::surface方法的典型用法代码示例。如果您正苦于以下问题：PHP Rectangle::surface方法的具体用法？PHP Rectangle::surface怎么用？PHP Rectangle::surface使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Rectangle的用法示例。
在下文中一共展示了Rectangle::surface方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
示例1: surface
{
$this->base = $base;
$this->height = $height;
}
# This might be different for each class of shape, because each Surface is calculated by a different formula ( St = b*h/2 and Sr = b*h)
public abstract function surface();
}
class Triangle extends Shape
{
# s = b*h/2
public function surface()
{
return round($this->base * $this->height / 2, 2);
}
}
class Rectangle extends Shape
{
# s = b*h
public function surface()
{
return round($this->base * $this->height, 2);
}
}
$r = new Rectangle();
$r->getValue(15, 3);
echo $r->surface() . "\n";
# echo 45
$t = new Triangle();
$t->getValue(15, 3);
echo $t->surface() . "\n";
# echo 22.5示例2: Rectangle
<?php
include_once "autoload.php";
$a4 = new Rectangle(0.21, 0.297);
$a4->perimetre();
$a4->surface();
echo $a4;
echo '<pre>';
var_dump($a4);
print_r($a4);
echo '</pre>';
/* modif pour JB
$truc = print_r($a4, true);
//echo $truc;
$posfleche = strripos($truc, "=>");
$posParent = strripos($truc, " )");
$lonLarg = trim(substr($truc, $posfleche+2, $posParent-2));
$tInfos = explode("/", $lonLarg);
print_r($tInfos);
*/
echo 'modif de la longueur<br/>';
$a4->longueur = 3;
$a4->perimetre();
$a4->surface();
echo $a4->largeur;
echo $a4->longueur;
// on demande une propriété qui
// n'existe pas
echo $a4->nawakNimporte;
// on vérifie que largeur existe
if (isset($a4->largeur)) {
echo 'ok';