How To echo constant Variable in php with variable name

Question

I started learning php and Recently I've faced a problem with a constant variable in my code. recently I've created the Ninja class in the editor and set a stealth constant to the string "MAXIMUM", then I try to echo it to the page using the scope resolution operator (::).

<html>
 <head>
 <title> Scope it Out! </title>
 </head>

<body>

<p>
  <?php
  class Person {

  }
  class Ninja extends Person {
    // Add your code here...
    const stealth = "Maximum";
  }
  // ...and here!
  if(Ninja::stealth){

    echo stealth;
    }

  ?>

  </p>

 </body>

 </html>

Now question is "How can echo the const Variable in php???"

`echo Ninja::stealth`. FYI, it is common practice to name constants in all capital letters. — John Conde, Jan 10 '14 at 14:17
The same way you access it in the `if` test: `echo Ninja::stealth` — Mark Baker, Jan 10 '14 at 14:17
@BrokenHeartღ - not really a duplicate of that: `stealth` is a constant, not a variable — Mark Baker, Jan 10 '14 at 14:19
`echo stealth;` is expecting a constant in the global scope, not one that belongs to the class. — Flosculus, Jan 10 '14 at 14:19
OP is also trying to print the value of the constant, not its name. — Wooble, Jan 10 '14 at 14:19
I am getting this error in this code Use of undefined constant stealth - assumed 'stealth' (line 18)stealth — Wadu, Jan 10 '14 at 14:22

score 3 · Accepted Answer · answered Jan 10 '14 at 14:20

You already accessed it by echo Ninja::stealth;
Try this:
Live Demo : https://eval.in/88040

 class Person {

      }
      class Ninja extends Person {
        // Add your code here...
        const stealth = "Maximum";
      }
      // ...and here!
      if(Ninja::stealth){
        echo Ninja::stealth;
       }

Output:

Maximum

score 1 · Answer 2 · answered Jan 10 '14 at 14:22

Or something like this:

<?php
  class Person {

  }
  class Ninja extends Person {
    // Add your code here...
    const stealth = "Maximum";
    public function getCamo()
    {
        return self::stealth;
    }
  }

  $ningen = new Ninja;
  echo $ningen->getCamo();

?>

How To echo constant Variable in php with variable name

2 Answers2