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  1. <?php
  2.  
  3. $first = "second";
  4. $second = "first";
  5.  
  6. echo $$first; // $ + valor de first (second) => $second => imprime "first"
Success #stdin #stdout 0.01s 20520KB
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first
https://ideone.com/DyuePY
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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