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  1. <?php
  2. $users = "Username1, Username2      , Username3       ";
  3.  
  4. preg_match_all('/([\w]{4,25})(?:\s+)?,?/m', $users, $result, PREG_PATTERN_ORDER);
  5. foreach($result[1] as $user) {
  6. 	echo $user;
  7. }
Success #stdin #stdout 0.03s 52480KB
comments (?)
stdin 
Standard input is empty
stdout 
Username1Username2Username3
https://ideone.com/P7VfEU
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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