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Consider the following PHP code snippet:

<?php

class A {
static $word = "hello";
static function hello() {print static::$word;}
}
class B extends A {
static $word = "bye";
}
B::hello();

?>

What will be the output on running the above mentioned code snippet?

bye

hello

hellobye

The script will throw an error.

Explanation: Answer option A is correct.

Late static binding is a variant of binding between static and dynamic binding. Late static binding works by storing the class named in the last "non-forwarding call". For example, a developer will get the output 'hello' in the following PHP script:

class A {
 static $word = "hello";
 static function hello() {print self::$word;}
}
class B extends A {
 static $word = "bye";
}
B::hello();

However, in the case of late static binding, if "self::$word" in the above example were changed to "static::$word" as shown in the following block, then the result of the call to B::hello() would be "bye":

class A {
 static $word = "hello";
 static function hello() {print static::$word;}
}
class B extends A {
 static $word = "bye";
}
B::hello();