php initialize static variable with other static variable

Question

I tried to initialize a static var with the content of another one and it seems to fail.

class Hey {
    static $user = "peter";
    static $home = '/home'.Hey::$user;

    // syntax error, unexpected T_VARIABLE, expecting T_STRING

Why does it fail and is there a way without an init-function or something else?

guys don't fool him ?! it's simply not possible as initializions must be constant they are not allowed to use variables at all! — Christoph Diegelmann
– Christoph Diegelmann, Commented Aug 23, 2013 at 9:04

Community · Accepted Answer · 2017-05-23 12:21:30Z

3

class Hey {
    static $user = "peter";
    static $home;
}
Hey::$home =  '/home'.Hey::$user;

or if $home is private:

class Hey {
    static $user = "peter";
    private static $home;
    static function init(){self::$home = '/home'.self::$user;}
}
Hey::init();

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answered Aug 23, 2013 at 9:02

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