- str_replace: documentation ( source)
- preg_replace: documentation ( source)
<?php
$string = '(`anurag`, 1,2), (1,2,3, `dm0c60544`),(2 ,3 ,3) ';
$pattern = '#`[a-zA-Z0-9]+`#'; // our regex pattern
$string = preg_replace($pattern, '', $string); //replace backticked text and the following comma
$string = str_replace(' ', '', $string); // remove unwanted whitespace
echo $string;