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  1. <?php
  2.  
  3. $in = 79817778833;
  4. $out = preg_replace(
  5. 	'/^(\d)(\d{3})(\d{3})(\d{2})(\d{2})$/',
  6. 	'+\1(\2)\3-\4-\5',
  7. 	(string)$in
  8. );
  9.  
  10. echo($out);
  11.  
Success #stdin #stdout 0.02s 52432KB
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Standard input is empty
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+7(981)777-88-33
https://ideone.com/yvLCNW
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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