create an array of all constant of a class?

Question

I was working with a class where almost 20 constant are defined, as i want all these constant value in an array, i just want to know

is there any method which create an array of all constant of a class?

I tried with compact BUT it does not work with constants.

class Alpha
{
 const ONE = 'fixone'; 
 const TWO = 'fix_two';
 const THREE = 3     
 
   public function __construct()
   {
     protected $arr_constant = compact(ONE,TWO,THREE); // gives FATAL Error
     // is there any method which collect all consant and create an array?
     protected $arr_contact = get_all_constant(__CLASS__); 
     var_dump($arr_constant);
   }
}

possible duplicate of Can I get CONST's defined on a PHP class? — deceze
– deceze ♦, Commented Aug 29, 2012 at 9:55

deceze · Accepted Answer · 2012-08-29 09:42:01Z

4

$ref = new ReflectionClass('Alpha');
var_dump($ref->getConstants());

answered Aug 29, 2012 at 9:42

deceze♦

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4 Comments

xkeshav Over a year ago

is ReflectionClass is inbuilt or default library in php 5+?

xkeshav Over a year ago

+1 its working perfect. i called $ref = new ReflectionClass(__CLASS__); in constructor

xkeshav Over a year ago

its is mentioned on documents that This function is currently not documented; only its argument list is available. May I use this in live project or is there any chances of depreciation

deceze Over a year ago

It's been there for quite a while and deprecation would make little sense, since it's useful and there's no replacement I know of. So yes, it's fine to use. It's simply not well documented, since it's something of a meta-function, the naming is pretty self-explanatory and if you're using it you should know what you're doing.

Ariel · Accepted Answer · 2012-08-29 09:41:40Z

2

Use: http://php.net/manual/en/function.get-defined-constants.php

And: http://php.net/manual/en/reflectionclass.getconstants.php

answered Aug 29, 2012 at 9:41

Ariel

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3 Comments

deceze Over a year ago

That gives you all constants though, not only specific class constants.

xkeshav Over a year ago

if we call this function in Alphaclass then?

Ariel Over a year ago

@deceze Added another link for class constants.

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