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  1. <?php
  2.  
  3. $params['filename'] = "2013-00049_20130830.pdf";
  4. $pattern = '/([0-9]{4,8})/';
  5. preg_match_all( $pattern, $params['filename'], $tmp);
  6. print_r($tmp[0]);
Success #stdin #stdout 0.03s 52480KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [0] => 2013
    [1] => 00049
    [2] => 20130830
)
https://ideone.com/9MzFFc
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
secret

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