fork download
copy 
  1. <?php
  2. $re = "/(\\w+)(?=\\s+\\d)/m"; 
  3. $str = "width 40cm height 70cm\nwidth: 40cm height 70cm"; 
  4.  
  5. $result = preg_replace($re, "$1:", $str);
  6. print_r($result);
Success #stdin #stdout 0.02s 52472KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
width: 40cm height: 70cm
width: 40cm height: 70cm
https://ideone.com/PMpItt
language:
PHP (php 7.3.5)
created:
9 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!