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  1. <?php
  2.  
  3. $s = array('/chat_3.txt', '/chat_old.txt', '/chat_15.txt');
  4. $matches = array();
  5. $t = preg_filter('/.*_(\d+)\..*/s', '$1',$s);
  6. print_r($t);
Success #stdin #stdout 0.03s 52480KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [0] => 3
    [2] => 15
)
https://ideone.com/le6LFx
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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