Difference between new static and new self in PHP, staticself

Difference between new static and new self in PHP, staticself

Today, the boss asked about the difference between new static and new self in the company. There was no answer to the ten programs in the company...

 

Baidu learned the difference between the two when the silk went home:

UseSelf ::Or_ CLASS __Static reference to the current class depends on the class that defines the current method:

UseStatic ::Instead of being parsed to define the class of the current method, it is calculated during actual running. It can also be called "static binding" because it can be used for (but not limited to) Calling static methods.

 

In simple terms, self is written in which class, and actually called is this class. the so-called static binding later, static indicates the class used, which is the static file you write in the parent class,

Then, the static class is directly or indirectly used through the subclass. this static class refers to this subclass, so static is similar to $ this, but static can be used for static methods and attributes.

Please refer to the column

 

 

<?phpclass Person{    public static function name()    {        echo "xiaosan";    }    public static function callself()    {        self::name();    }    public static function callstatic()    {        static::name();    }}class Man extends Person{    public static function name()    {        echo "gaojin";    }}Man::name();  // output： gaojinPerson::callself();  // output： xiaosanPerson::callstatic();  // output：gaojin?>

 

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