<?php
$input = "textmdwrhfejhg../0005456,2222233333,34erw.re.ty";
 
//Here's mine :
$repl1 = trim(preg_replace("/[^0-9,.]/", "", $input), '.,');
//following line just removes one zero, i want it to remove all chars like
//Input : 000549,569     Output : 549,569
echo "$repl1\n";
$repl2 = preg_replace("/^0+(?!,)/", "",$repl1);
$repl3 = str_replace(".","",$repl2);
preg_match('/[0-9]+(?:\,[0-9]{2}){0,2}/', $repl3, $matches);
$repl4 = preg_replace('/(\d)(?=(\d{3})+(?!\d))/', '$1.', $matches[0]);
echo $repl4;

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