PHP オブジェクトを文字に変換するための効率的な実践ガイド

class MyObject {
    public function __toString() {
        return "This is my object";
    }
}

$obj = new MyObject();
echo $obj; // 输出为：This is my object

class Person {
    public $name;

    public function __construct($name) {
        $this->name = $name;
    }
}

$person = new Person("Alice");

$serializedObject = serialize($person);
echo $serializedObject; // 输出为：O:6:"Person":1:{s:4:"name";s:5:"Alice";}

$unserializedObject = unserialize($serializedObject);
echo $unserializedObject->name; // 输出为：Alice

class Book {
    public $title;
    public $author;

    public function __construct($title, $author) {
        $this->title = $title;
        $this->author = $author;
    }
}

$book = new Book("PHP Guide", "John Doe");

$jsonString = json_encode($book);
echo $jsonString; // 输出为：{"title":"PHP Guide","author":"John Doe"}

$decodedBook = json_decode($jsonString);
echo $decodedBook->title; // 输出为：PHP Guide

class Product {
    public $name;
    public $price;

    public function __construct($name, $price) {
        $this->name = $name;
        $this->price = $price;
    }

    public function toString() {
        return "Product: " . $this->name . " - Price: $" . $this->price;
    }
}

$product = new Product("Laptop", 999);
echo $product->toString(); // 输出为：Product: Laptop - Price: $999