Help me in solving PROGLANG problem

help
,
1

My issue

When I submit the code with the same logic in Python I get the right answer, but when I do so in PHP I get the wrong answer. I’m not sure why this is happening.

My code

<?php

$t = readline();

for($i = 0; $i < $t; $i++) {
    $vars = explode(' ', readline());
    
    $lang = 0;
    if($vars[0] == $vars[2] or $vars[0] == $vars[3]) {
        if($vars[1] == $vars[2] or $vars[0] == $vars[3]) {
            $lang = 1;   
        }
    } elseif($vars[0] == $vars[4] or $vars[0] == $vars[5]) {
        if($vars[1] == $vars[4] or $vars[1] == $vars[5]) {
            $lang = 2;   
        } 
    }
    
    print($lang . PHP_EOL);
}

Problem Link: PROGLANG Problem - CodeChef