任務(wù)：
定義如下類
People
屬性： name (string nonstatic) age (int nonstatic) height (double nonstatic) weight (duoble nonstatic) hobby (array nonstatic) currentNumer (int static) MAXNUMBER (const)
?法 speak eat haveBirthday sleep walk swim run
要求： 在?個對象創(chuàng)建和消亡時在控制臺輸出相應(yīng)消息 吃飯后體重會增加 睡覺后??會增加 跑步窗悯、游泳會降低體重 過??會長?歲 每個?法被執(zhí)?的時候都需要調(diào)?speak?法单料，輸出當(dāng)前調(diào)?的?法的名字 每當(dāng)?個新的對象被創(chuàng)建掰担，currentNumber需要發(fā)?變化来农，當(dāng)總?數(shù)超過MAXNUMBER時提?創(chuàng)建失敗。
反思
之前的任務(wù)完成時構(gòu)造函數(shù)中出現(xiàn)了return蒿偎，并且調(diào)用析構(gòu)函數(shù)并不能完全銷毀對象性雄，所以進行改進，增加了set.php進行對象創(chuàng)建控制戳晌，People.php中定義了類People，set.php中定義了set函數(shù)用于創(chuàng)建對象痴柔，main.php實現(xiàn)具體功能.
People.php
<?php
namespace MyProject;
class People
{
private $name;
private $age;
private $height;
private $weight;
private $hobby;
public static $currentNumber = 0;
const MAXNUMBER = 2;
/**
* People constructor.
* @param string $name
* @param int $age
*/
public function __construct(string $name, int $age, $height, $weight, array$hobby)
{
$this->name = $name;
$this->age = $age;
$this->height = $height;
$this->weight= $weight;
$this->hobby= $hobby;
self::$currentNumber++ ;
echo "current people number " .self::$currentNumber."</br>\n";
echo "the person's name is $this->name,</br>
the age is $this->age years old,</br>
the height is $this->height,</br>
the weight is $this->weight,</br>
the hobby is </br>\n";
var_dump($hobby);
echo "</br>\n";
}
public function speak($action){
echo "the method is $action ";
echo "      ";
}
public function eat(){
$this->speak(__METHOD__ );
$this->weight=$this->weight+1;
echo "current weight is ".$this->weight."</br>\n";
}
public function sleep(){
$this->speak(__METHOD__ );
$this->height=$this->height+1;
echo "current height is ".$this->height."</br>\n";
}
public function run(){
$this->speak(__METHOD__ );
$this->weight=$this->weight-1;
echo "current weight is ".$this->weight."</br>\n";
}
public function swim(){
$this->speak(__METHOD__ );
$this->weight=$this->weight-1;
echo "current weight is ".$this->weight."</br>\n";
}
public function haveBirthday(){
$this->speak(__METHOD__ );
$this->age=$this->age+1;
echo "current age is ".$this->age."</br>\n";
}
public function __destruct(){
echo "destruct of " . __CLASS__ . " " . __METHOD__ . "</br>\n";
}
}?>
set.php
<?php
namespace task2\file1;
require "People.php";
//use MyProject;
use MyProject\People ;
function set(string $name, int $age, $height, $weight, array $hobby)
{
if (People::$currentNumber+1> People::MAXNUMBER) {
echo "construct fails ";
echo "            ";
echo "</br>\n";
echo "</br>\n";
return null;
}
else
{
$person =new People($name, $age, $height, $weight, $hobby);
return $person;
}
}
?>
main.php
<?php
require "set.php";
use function task2\file1\set as set;
$hooby = array(
0=>"play basketball",
1 => "play football",);
$people = set("ieso1",22,170,110,$hooby);
if(!empty($people)) {
$people->haveBirthday();
$people->eat();
$people->sleep();
$people->swim();
$people->run();}
echo "</br>\n";
$people1 = set("ieso2",23,180,120,$hooby);
echo "</br>\n";
$people2 = set("ieso3",24,185,130,$hooby);
if(!empty($people2))
{
$people2->eat();
}
$people3 = set("ieso3",24,185,130,$hooby);
if(!empty($people3))
{
$people3->eat();
}
?>
運行結(jié)果
task2運行結(jié)果.jpg
