<?php
$url  = 'abc/nt/dt.php?tab=abc&number=1';
$question_cut=explode("?" , $url);
$file_url=$question_cut[0];
$get_files=explode("/" , $file_url);
$explode_count=sizeof($get_files); 
$get_name=$explode_count-1; 
$get_data=$get_files[$get_name];
$cut_extion=explode(".", $get_data);
echo $complete=$cut_extion[0];

?>