Burç Bulmak

<?php 
function burcbul($tarih){ 
    $burclar = array(); 

    $burclar["balik"] = mktime(0,0,0,1,21,1970); 
    $burclar["kova"] = mktime(0,0,0,2,20,1970); 
    $burclar["koc"] = mktime(0,0,0,3,21,1970); 
    $burclar["boga"] = mktime(0,0,0,4,21,1970); 
    $burclar["ikizler"] = mktime(0,0,0,5,22,1970); 
    $burclar["yengec"] = mktime(0,0,0,6,22,1970); 
    $burclar["aslan"] = mktime(0,0,0,7,24,1970); 
    $burclar["basak"] = mktime(0,0,0,8,24,1970); 
    $burclar["terazi"] = mktime(0,0,0,9,24,1970); 
    $burclar["akrep"] = mktime(0,0,0,10,24,1970); 
    $burclar["yay"] = mktime(0,0,0,11,22,1970); 
    $burclar["oglak"] = mktime(0,0,0,12,23,1970); 

    $gtarih = explode("-",$tarih); 
    $tarih = mktime(0,0,0,$gtarih[1],$gtarih[0],1970); 
    $selected_burc = $burclar["oglak"]; 
    $c = 0; 
    foreach($burclar as $burcadi=>$burc_tarih) { 
        if($tarih < $burc_tarih || $tarih == $burc_tarih) { 
           $selected_burc = $prevburc; 
           break; 
        } 
        $prevburc = $burcadi; 
        $c++; 
    }     
    return $selected_burc; 
} 
?> 

<?php  
//KULLANIMI 
$gun = 4; 
$ay = 11; 
echo "Gün : $gun <br>"; 
echo "Ay : $ay <br>"; 
echo "Burcunuz : ".burcbul("$gun-$ay").""; 
?>