Monday, August 3, 2009

passing object in functions in php 5

Question : In PHP 5 you can use the ______ operator to ensure that an object is of a particular type. You can also use _______ in the function declaration.

Answer:

1. instanceof, is_a
2. instanceof, type-hinting
3. type, instanceof
4. ===, type-hinting
type-hinting ensures that we are passing a particular type of parameter to a function.
5. ===, is_a
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2 comments:

sAm said...

Correct Answer is

2. instanceof, type-hinting

you can verify it from
http://php.net/manual/en/language.operators.type.php

and
http://php.net/manual/en/language.oop5.typehinting.php

Anonymous said...

Correct sAm,

=== in php 5 only is true when comparing references to the same object... It does not compare with types.

So 2. instanceof, type-hinting is correct