Question

我有以下模型（对象），其中包含一些普通字段和嵌套数组。

我试图将模型转换为完整的数组，我遇到了一些技巧，例如以下内容。

public function getMessageArray()
{
    return (array) $this->message;
}

但是，这给出了以下结果

另一个技巧是使用json_encode并解码如下：

$result= json_decode(json_encode($this->message), true);

但那是一个空数组。

App\Mailer\Models\Message {#505
  -subject: "You bought products 3 days ago"
  -fromEmail: "no-reply@test.be"
  -fromName: "Webshop"
  -replyTo: "no-reply@test.be"
  -toEmail: "test@gmail.com"
  -toName: "Myself"
  -mergeVars: array:2 [
    "rcpt" => "test@gmail.com"
    "vars" => array:2 [
      0 => array:2 [
        "name" => "fname"
        "content" => "My"
      ]
      1 => array:2 [
        "name" => "lname"
        "content" => "Self"
      ]
    ]
  ]
}

这是print_r()

的$this->message

我无法将$this->message转换为数组以访问所有属性。知道我可能做错了吗？

Answer 1

当属性为私有时，无法直接访问它们。 json_encode()不对它们进行编码。下面的PublicMaker类提供对对象的所有属性的访问：私有和公共。

<?php
/*
* Make all the attributes of a class public
*/
class PublicMaker {

    public $matches;

    function __construct($obj) {
        // explode object attribute and values
        $print_r = print_r($obj, true);
        preg_match_all('/\[(\w*).*\] => (.*)/', $print_r, $matches);
        $this->matches = $matches;
    }

    function getArray() {
        foreach($this->matches[1] as $key=>$match) {
            $arr[$match] = $this->matches[2][$key];
        }
        return $arr;
    }

    // magic method to get any attribute of the object passed in the contructor
    function __get($attribute) {
        $match = array_search($attribute, $this->matches[1]);
        if ($match !== FALSE) {
            return $this->matches[2][$match];
        } else {
            return NULL;
        }
    }

}


// test values
class Message {
    private $subject = 'You bought products 3 days ago';
    private $fromEmail = "no-reply@test.be";
    public $fromName = "Webshop";
}

// usage demonstration
$message = new Message();
$publicMessage = new PublicMaker($message);
$array = $publicMessage->getArray();
$subject = $publicMessage->subject;

echo '<pre> getArray: ';
print_r($array);

echo "\n Subject: $subject \n";

// other test values
echo "

Other test values:";
print_r((array) $message);
print_r($publicMessage->matches); // debug
echo "\n subject:   ", $publicMessage->subject; // string(30) "You bought products 3 days ago"
echo "\n fromEmail: ", $publicMessage->fromEmail;
echo "\n fromName:  ", $publicMessage->fromName;
echo "\n notExist   ", $publicMessage->notExist;
var_dump($publicMessage->notExist); // NULL

可以在此处测试和优化正则表达式：http://www.phpliveregex.com/p/gje

无法将对象转换为数组并访问其属性

1 个答案: