How to write a Regex in oracle so that it replaces repeated characters in the string '12233444' => '1234'?

Question

Oracle

Everything seems to be simple ... But something doesn’t work out for me

Answer 1

<?php
$re = '/([0-9])\1*/m';
$str = '12233444';
$str = preg_replace($re, '$1', $str);
echo $str; // 1234