<?php

$aTag = '<a href="news-test/ams-list-dev.html#c131546" class="fancy-link" rel="131546">';


$regex = '/(href="[^#]+(#[A-Za-z0-9]+)")/';

if(preg_match($regex,$string,$matches)) {
	$search = $matches[0];
	$replace = 'href="'.$matches[2].'"';
	$newATag = str_replace($search,$replace,$string);
}



?>