Is it different between two way to call a function in an other class?

Question

I have a class

<?php class Test{ public function printword($word){ echo $word; } } ?>

And in another class, i call it.

<?php //Included needed files !!! $w = 'Hello'; //Way 1 $a = new Test; $result = $a->printword($w); //Way 2 $result = Test::printword($w); ?>

Is it different ?

And $a = new Test; or $a = new Test(); is right ?

Is it different ? Yes the one is wrong and the other one correct. You don't have a static method here, so you need to use ->. And $a = new Test; or $a = new Test(); is right ? Both. If you want to pass arguments to the constructor then of course you have to write the parentheses. — Rizier123
– Rizier123, Commented Apr 20, 2016 at 3:09
Yes it does, but it's wrong. Turn on error reporting and you get a warning about it — Rizier123
– Rizier123, Commented Apr 20, 2016 at 3:12

Meathanjay · Accepted Answer · 2016-04-20 03:13:54Z

Yes, it's different. if you declare a method static makes them accessible without needing an instantiation of the class.

class Test{ public function printword($word){ echo $word; } } //Call printword method $a= new Test(); $a->printword('Words to print');

Static Method:

class Test{ public static function printword($word){ echo $word; } } //Do not need to instantiation Test class Test::printword('Words to print');

Can a ask, so do we should use all static function, because it looks simple, easy to use, and do not need to instantiation ?
Actually, No, use a static method when it's complete itself and not depended to others properties of the class (like, for instance, a syntax converter for BB code to HTML)

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