fork(3) download
copy 
  1. <?php
  2.  
  3. $str = "abaaksjjkdhaf 29023487 - 1kfksdjf";
  4.  
  5. echo preg_replace('/[^\d-]/i', '', $str);
Success #stdin #stdout 0.01s 82944KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
29023487-1
https://ideone.com/HNlubE
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!