Question

我无法接收我推入卡阵列的值。我不知道是不是我没有调用正确的属性，或者我只是没有正确添加到数组中。

<?php

class Deck{

    public function __construct(){
        $values =array('2','3','4','5','6','7','8','9','10','J','Q','K','A');
        $suits =array('Diamond','Club','Heart','Spade');
        $cards = array();
        foreach ($suits as $suit) {
            foreach($values as $value){
                $cards[] = "$value of $suit's";
            }
        }
    }
}

$deck = new Deck();
var_dump($deck);

Answer 1

$cards是__construct的本地变量：一旦该函数结束，该变量就会蒸发。相反，您可能希望cards成为该类的成员：

class Deck {
    public $cards = [];

    public function __construct() {
        $values =array('2','3','4','5','6','7','8','9','10','J','Q','K','A');
        $suits =array('Diamond','Club','Heart','Spade');
        $cards = array();
        foreach ($suits as $suit) {
            foreach($values as $value){
                $this->cards[] = "$value of $suit's";
            }
        }
    }
}

然后，您可以在对象内使用$this->cards，或在外部使用$deck->cards。

在PHP中将值推送到数组中

1 个答案: