Let's talk about how to convert a php array into a java object array

In web development, PHP and Java are both very common programming languages. In different application scenarios, both languages ​​have considerable advantages. In some projects, we may need to convert PHP arrays into object arrays in Java. This is a very common requirement. Below, we will learn how to achieve this requirement.

1. Convert PHP array into JSON string

First, we need to convert PHP array into JSON format string:

$array = array(
    'name' => 'John',
    'age' => 20,
    'gender' => 'male'
);

$json_string = json_encode($array);
echo $json_string;

Run the above Code, the output is as follows:

{"name":"John","age":20,"gender":"male"}

2. Java parsing JSON string

Then, we need to parse the JSON string in Java and convert the JSON string into a Java object :

import com.google.gson.Gson;

class User {
    String name;
    int age;
    String gender;

    public User(String name, int age, String gender) {
        this.name = name;
        this.age = age;
        this.gender = gender;
    }
}

public class Main {
    public static void main(String[] args) {
        String json_string = "{\"name\":\"John\",\"age\":20,\"gender\":\"male\"}";

        Gson gson = new Gson();
        User user = gson.fromJson(json_string, User.class);

        System.out.println(user.name + " " + user.age + " " + user.gender);
    }
}

Run the above code, the output is as follows:

John 20 male

3. Convert the PHP array into a Java object array

Next, we convert the PHP array into Java object array:

$array = array(
    array(
        'name' => 'John',
        'age' => 20,
        'gender' => 'male'
    ),
    array(
        'name' => 'Tom',
        'age' => 21,
        'gender' => 'male'
    ),
    array(
        'name' => 'Lucy',
        'age' => 19,
        'gender' => 'female'
    )
);

$json_string = json_encode($array);
echo $json_string;

Run the above code, the output is as follows:

[{"name":"John","age":20,"gender":"male"},{"name":"Tom","age":21,"gender":"male"},{"name":"Lucy","age":19,"gender":"female"}]

We need to use the array in Java to receive the objects in the JSON string:

import com.google.gson.Gson;

class User {
    String name;
    int age;
    String gender;

    public User(String name, int age, String gender) {
        this.name = name;
        this.age = age;
        this.gender = gender;
    }
}

public class Main {
    public static void main(String[] args) {
        String json_string = "[{\"name\":\"John\",\"age\":20,\"gender\":\"male\"},{\"name\":\"Tom\",\"age\":21,\"gender\":\"male\"},{\"name\":\"Lucy\",\"age\":19,\"gender\":\"female\"}]";

        Gson gson = new Gson();
        User[] users = gson.fromJson(json_string, User[].class);

        for (User user : users) {
            System.out.println(user.name + " " + user.age + " " + user.gender);
        }
    }
}

Run the above The code output is as follows:

John 20 male
Tom 21 male
Lucy 19 female

So far, we have successfully converted a PHP array into a Java object array. In this way, we can flexibly use PHP and Java in different projects to achieve better web applications.

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