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  1. <?php
  2.  
  3. // your code goes here
  4. $formula = '[Spaledar] $v0 $v1 - $v2';
  5. $vars = ["v0"=>"Connected","v1"=>"Viet Name","v2"=>"Hebus jifo"];
  6.  
  7. echo "\n $formula";
  8.  
  9. $replaced = preg_replace_callback("/\$(v\d+)/", function ($tokens) use ($vars){
  10. 		echo "\n".$tokens[1];
  11. 		return $vars[$tokens[1]];
  12. 	}, $formula);
  13. echo "\n $replaced";
Success #stdin #stdout 0.03s 26152KB
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 [Spaledar] $v0 $v1 - $v2
 [Spaledar] $v0 $v1 - $v2
https://ideone.com/b9jrxz
language:
PHP (php 7.3.5)
created:
8 days ago
visibility:
public

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