fork download 
  1. <?php
  2.  
  3. $str = '#форум программистов #форум экономистов #форум
  4. ';
  5.  
  6. $str = preg_replace('~^(?:#[^#]+?(?:[^#]+?)?)*\n~m', '', $str);
  7.  
  8. var_dump($str);
Success #stdin #stdout 0.01s 24216KB
comments (?)
stdin 
Standard input is empty
stdout 
string(0) ""
https://ideone.com/DYjNU3
language:
PHP (php 7.3.5)
created:
6 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!