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  1. <?php
  2. define('FOO', 'bar');
  3.  
  4. $constant = function ($nome) {
  5.     return $nome;
  6. };
  7.  
  8. echo "FOO = {$constant(FOO)}\n",
  9.      "BAZ = {$constant(BAZ)}\n",
  10.      "PHP_VERSION = {$constant(PHP_VERSION)}\n";
Success #stdin #stdout #stderr 0.02s 82560KB
comments (?)
stdin 
Standard input is empty
stdout 
FOO = bar
BAZ = BAZ
PHP_VERSION = 7.1.1-1
stderr 
PHP Notice:  Use of undefined constant BAZ - assumed 'BAZ' in /home/2HfV61/prog.php on line 9
https://ideone.com/vSJ05m
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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