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【PHP】__construct(コンストラクタ)をなぜ使うのか?

Last updated at Posted at 2022-03-07

※__constructをなぜ使うか?

インスタンスの生成した瞬間実行できるから
※クラスの初期値を設定できる

<?php
class Food
{
    function __construct($id,$name,$age,$height,$weight)
    {
        $this->id = $id;
        $this->name = $name;
        $this->age = $age;
    }
    function profile(){
        return '社員番号:'.$this->id.PHP_EOL.'名前は'.$this->name;
    }
    
    function introduction(){
        return $this->name.'の年齢は'.$this->age;
    }
}

$id = 12;
$name = '雅也';
$age = 34;
$height = 176;
$weight = 80;

$food = new Food($id,$name,$age,$height,$weight);

echo $food->profile();
echo PHP_EOL;
echo $food->introduction();

結果

社員番号:12
名前は雅也
雅也の年齢は34
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