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  1. <?php
  2.  
  3. $detail = "line 1<br />line 2<br /><br />line 3";
  4. echo preg_replace('#(<br\s*\/?>\s*){3,}#i', '<br /><br />', $detail);
  5.  
  6. echo "\n";
  7.  
  8. $detail = "line 1<br />line 2<br /><br /><br />line3<br /><br />";
  9. echo preg_replace('#(<br\s*\/?>\s*){3,}#i', '<br /><br />', $detail);
Success #stdin #stdout 0.01s 20568KB
comments (?)
stdin 
Standard input is empty
stdout 
line 1<br />line 2<br /><br />line 3
line 1<br />line 2<br /><br />line3<br /><br />
https://ideone.com/Jblu1Z
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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