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phpclasspublic
Ben
Ben

Reputation: 57277

PHP classes why use public keyword?

Why should I declare class properties (variables) or methods (functions) using the keyword public, if they're public by default? Or, are they?

To phrase my question differently, is public redundant? I understand private and protected, but why declare public if class members are public anyway?

Upvotes: 10

Views: 4261

Answers (4)

NikiC
NikiC

Reputation: 101936

Yes, public is the default (see visibility docs).

People add it, so it is consistent with all the other methods / properties.

Furthermore, if you want to declare a property public and don't want to use public you will need to use var, which is not recommended and will likely be deprecated at some point.

Upvotes: 8

Luke
Luke

Reputation: 1329

There is no technical reason to use public however a visibility keyword is required by PSR-2 on all functions so if you want to follow PSR-2 then you should use it:

4.3. Methods

Visibility MUST be declared on all methods.

https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md#43-methods

Upvotes: 2

Travis
Travis

Reputation: 49

As of php 5.3 (I think, its been a while), using the var keyword raises E_STRICT errors, so public has to be used to declare object vaiables. As for functions, I believe it is more of a consistency thing.

Upvotes: 3

Sarfraz
Sarfraz

Reputation: 382806

Sure it is redundant since that is the default visibility level. You should avoid them when you can. Some people add the public keyword explicitly so that code is little more readable.

Upvotes: 2

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