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  1. <?php
  2. $bar='baz';
  3. $foo_baz='Hello';
  4. echo ${"foo_$bar"};
Success #stdin #stdout 0.01s 82560KB
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Standard input is empty
stdout
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Hello
https://ideone.com/CMIGKA
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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