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