PHP program to check if the bits of the two given positions of a number are same or not

<?php
function test_bit_position($num, $pos1, $pos2) {
   $pos1--;
   $pos2--;
   $bin_num = strrev(decbin($num));
   if ($bin_num[$pos1] == $bin_num[$pos2]) {
     return "true";
   } else {
     return "false";
   }
}
echo test_bit_position(112,5,6)."\n";
?>