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  1. <?php
  2. $string = '12ala1';
  3. $string = preg_replace('@[^0-9]@', '', $string);
  4. echo $string;
Success #stdin #stdout 0.03s 13112KB
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https://ideone.com/fcP3s3
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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