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  1. <?php
  2.  
  3. $re = '/([^\w.])\1+/';
  4. $str = '   .....I......####    ';
  5. $subst = '$1';
  6. $result = preg_replace($re, $subst, $str);
  7. echo "The result of the substitution is '".$result . "'";
Success #stdin #stdout 0s 52488KB
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Standard input is empty
stdout
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The result of the substitution is ' .....I......# '
https://ideone.com/GRGtgo
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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