FAQ: Classes and Objects - Static Members

This community-built FAQ covers the “Static Members” exercise from the lesson “Classes and Objects”.

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This exercise can be found in the following Codecademy content:

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FAQs on the exercise Static Members

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Hi, All!
I realized that only the properties need to be static. I’ve tried to keep only the property static and not the function addTowel and it works! Why?
Take a look:

<?php class AdamsUtils { public static $the_answer = 42; public function addTowel($string) { return $string . " and a towel."; } } $items = "I brought apples"; $a = "Walter brought bananas e cereals"; echo "\n"; echo AdamsUtils::addTowel($a); echo "\n"; echo AdamsUtils::addTowel($items); echo "\n"; echo AdamsUtils::$the_answer;
1 Like

As of PHP 8.0, non-static methods cannot be called statically. However, Codecademy is running PHP 7.3, which allows for you to call a non-static method as if it were static. You can check the current PHP version like so:

echo phpversion();

So long as the method can execute and doesn’t encounter an error (such as an Undefined Variable error caused by trying to access a non-static variable that hasn’t been instantiated), it will execute. I find it very weird to see this degree of lenience after having learned stricter languages like Java, and I unfortunately can’t think of any use cases for it.