What is the difference between Array and array? [duplicate]

Question

In this OOP tutorial, I noticed the following code:

public function validate(Array $data, Array $rules){}

My question is if that is the same as:

public function validate(array $data, array $rules){}

In the PHP.net documentation, I could find a reference only to the second form.

It seems that they both mean the same thing. In other news; during a little research for this question I have found out that PHP is in general completely case-insensitive. Ergo: you can use whatever case you'd like. — klaar
– klaar, Commented Oct 21, 2015 at 8:58
What do you mean by "completely case-insensitive"? Are you talking about all php code or only reserved words? — Michael Haddad
– Michael Haddad, Commented Oct 21, 2015 at 9:02
I'm talking about quite a big part of PHP, as said in this comment in this SA question: 'Are PHP functions case sensitive?'. This blogpost has done some research on this matter. — klaar
– klaar, Commented Oct 21, 2015 at 9:10

Luis Ávila · Accepted Answer · 2015-10-21 09:01:22Z

6

They are both the same. Some IDEs only recognize one of the forms, though. (Just like stackoverflow itself, which only stylizes Array

answered Oct 21, 2015 at 9:01

Luis Ávila

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1 Comment

Yes, even you can declare your array like this: $arr = aRrAy(1, 2, 3);

David Syengo · Accepted Answer · 2023-03-07 12:51:48Z

0

Short answer: PHP constructs, class names, functions and user-defined functions are case-insensitive.

answered May 12, 2022 at 14:38

David Syengo

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Functions yes, variable names not: $aaa = 'a'; echo $AAA; -> undefixed $AAA

Thanks @Martijn for pointing that out, I've corrected.

HightronicDesign · Accepted Answer · 2015-10-21 08:58:35Z

-5

Javascript can only usw "Array". Using "array" in PHP is no problem, but if you want do use Javascript too, it will cause an error.

answered Oct 21, 2015 at 8:58

HightronicDesign

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Javascript is an unrelated context.