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  1. <?php
  2. $exp = "%var first% and %var second%";
  3. $tmp = preg_replace_callback("#%(.*?)%#si", function($matches) {
  4. 	return "%" . strtoupper($matches[1]) . "%";
  5. 	},$exp); 
  6. echo $tmp;
Success #stdin #stdout 0.02s 24192KB
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stdin
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Standard input is empty
stdout
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%VAR FIRST% and %VAR SECOND%
https://ideone.com/UTe7r9
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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