Serialize PHP => Unserialize JAVA / Serialize for php in string format

Question

I have an array in php of this format:

<?php
$value = array("id" => 42, "user" => "superman");
echo serialize($value); 
?>

Serialized :

a:2:{s:2:"id";i:42;s:4:"user";s:8:"superman";}

I receive this into a String in java. How I can do for deserialize this in java ? I know the implements Serializable in java but not work in this case.

I want to create an object in this kind of format :

import java.io.Serializable;

public class Serial implements Serializable{
    private int mId;
    private String mUser;

    public Serial(int mId, String mUser) {
        super();
        this.mId = mId;
        this.mUser = mUser;
    }
    public int getId() {
        return mId;
    }
    public void setId(int id) {
        this.mId = id;
    }
    public String getUser() {
        return mUser;
    }
    public void setUser(String user) {
        this.mUser = user;
    }
}

After that I want to create another time the String serialized from the Java object for deserialize in PHP;

Thanks for your help.

[Related/duplicate](http://stackoverflow.com/questions/743402/unserialize-in-java-a-serialized-php-object). Use a universal format like JSON. — Jamie Schembri, Aug 07 '13 at 13:12
Yea use a serialsation format which is supported on both sides. Java Serializable means you can serialize the binary state of the object to transfer it inside the java world ;) But for example a given JSON String could be parsed as JSON in your constructor of your pojo to fill up the values. — Rene M., Aug 07 '13 at 13:14

Robadob · Accepted Answer · 2013-08-07T13:20:00.000

You can't natively read one languages serialised objects with another language (languages each have their own serialisation protocols/format, there is no guarantee they can read one-anothers format), Java serialised objects are serialised to a binary format and PHP your provided text format.

There are libraries such as Google's protocol buffers that you can use, they don't officially support PHP, however there are 3rd party libraries which provide Protocol Buffer support for PHP.

Protocol buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data – think XML, but smaller, faster, and simpler. You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages – Java, C++, or Python.

If you aren't fond of that, you will need to develop your own protocol for reading PHPs serialised objects into a Java object, you may be able to do this with a modified JSON library as I don't believe that s:2:"id"; from your sample serialised object is valid JSON. There exists a library for doing this using Java, however the PHP serialisation format isn't 'safe' as it can contain null values, so I would advise against it.

Thanks is good for the parting ! Thanks a lot ! For help I do the serialization manually. Thanks a lot — VincentLamoute, Aug 08 '13 at 08:59

score 2 · Answer 2 · edited May 23 '17 at 12:15

A bit late for you, but could be useful for others (including me) :

You can check this question, which has a lot of answers. For those who don't have time to read, here are the main links it leads to :

1- A static class for PHP de/serialization

2- The Pherialize class with its satellite classes

BUT as @Robadob (and all devs) said it, the most reliable method to do this kind of job is to use a standard format.

Serialize PHP => Unserialize JAVA / Serialize for php in string format

2 Answers2

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