dirt-Y

dirty.php

<?php 
    error_reporting(0); 
    require("flag.php"); 
    # made by munsiwoo 

    $x = 1337; 
    $e = array(); 
    $cookies = $_COOKIE; 
    extract($cookies); 
     
    $elements="apple|banana|strawberry". 
    "melon|lemon|mango|peach|tangerine". 
    "grapes|coconut|orange|kiwi|ʕ•ᴥ•ʔ"; 

    $fruits = explode("|", $elements); 
    shuffle($fruits); 

    foreach($fruits as $fruit){ 
        $e[$x++] = $fruit; 
    } 

    if(preg_match("/([0-9]|[a-z])/i", $a)) die("ʕ•ᴥ•ʔ"); 
    if(preg_match("/([0-9]|[a-z])/i", $b)) die("ʕ•ᴥ•ʔ"); 
    $p = strcmp($e[strlen($elements)^strlen($x)][9],chr(103)); 

    if(strcmp($p, (int)"ʕ•ᴥ•ʔ") == "ʕ•ᴥ•ʔ"){ 
        if((int)($a^$b) === strlen($x)){ 
            show_flag(); 
        } 
    } 
     
    show_source(__FILE__);