PHP Class throws an error, what is wrong

Question

I have the class.

Class User {

    private $_name;
    private $_email;

    public static function factory() {
        return new __CLASS__;
    }

    public function test() {

    }
}

and when i make a static method call using the syntax below.

User::factory();

it throws me following syntax error.

Parse error: syntax error, unexpected T_CLASS_C in htdocs/test/index.php on line 8

the error is being thrown because the Static factory() method is unable to create the object during the static method call.

and when i change the magic constant __CLASSS__ to the name of the current class i.e to User then it works.

what am i missing?

Why don't you return self or $this? Do you need an new instance of the object? — powtac
– powtac, Commented Aug 28, 2011 at 19:56
yes, i need to create new instance of the object everytime i make call. — Ibrahim Azhar Armar
– Ibrahim Azhar Armar, Commented Aug 28, 2011 at 19:59

Book Of Zeus · Accepted Answer · 2011-08-28 19:58:51Z

10

Try:

Class User {

    private $_name;
    private $_email;

    public static function factory() {
            $class = __CLASS__;
            return new $class;
    }

    public function test() {

    }
}

edited Aug 28, 2011 at 19:58

answered Aug 28, 2011 at 19:44

Book Of Zeus

49.9k18 gold badges176 silver badges171 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Ibrahim Azhar Armar Over a year ago

that of course works, that's not the point, i don't want to create the object that way.

Book Of Zeus Over a year ago

You are trying to create a dynamic return?

Ibrahim Azhar Armar Over a year ago

hehe, i was missing this trick :), by the way it should be return new $class; not return new $class();

Book Of Zeus Over a year ago

you are correct, but both works since it's a class/object. If you want to pas parameters then you will have to use (). In this case, you don't need.

Decent Dabbler · Accepted Answer · 2011-08-28 20:00:03Z

8

Not really sure why your example doesn't works. But what does work is:

public static function factory()
{
    return new self();
}

answered Aug 28, 2011 at 20:00

Decent Dabbler

22.8k11 gold badges77 silver badges107 bronze badges

Comments

JRL · Accepted Answer · 2011-08-28 19:48:38Z

7

Try this:

$class = __CLASS__;
return new $class;

answered Aug 28, 2011 at 19:48

JRL

78.2k18 gold badges103 silver badges146 bronze badges

2 Comments

Ibrahim Azhar Armar Over a year ago

it doesn't work :(, throws the following error syntax error, unexpected T_CONSTANT_ENCAPSED_STRING

JRL Over a year ago

@Ibrahim Azhar Armar: sorry, my bad, I edited my answer, this time it should work.

powtac · Accepted Answer · 2011-08-28 20:04:49Z

3

Why don't you return self or $this?

Check out the singleton patterns: http://www.phpbar.de/w/Singleton and http://php.net/manual/language.oop5.patterns.php

1 Comment

Jared Farrish Over a year ago

You realize you posted a German-language site in the first link?

Collectives™ on Stack Overflow

PHP Class throws an error, what is wrong

4 Answers 4

4 Comments

Comments

2 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

4 Comments

Comments

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related