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  1. <?php
  2.  
  3. $tel = '091-9869123456';
  4.  
  5. if(preg_match("/^[091]{3}-[0-9]{10}$/", $tel)) {
  6.     echo "valid";
  7. } else {
  8.     echo "invalid";
  9. }
Success #stdin #stdout 0.01s 82944KB
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stdin
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Standard input is empty
stdout
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valid
https://ideone.com/Ei0T0S
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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