kalkulacka splatek

<?php 


$uver          = 70000;
$let           = 10;
$sazba         = 0.05;

$mesice        = $let*12;

$A          = (round(($uver * $sazba/12)/(1-pow((1/(1+$sazba/12)),($mesice)))*100 )/100)*12;
$mes_spl    = $A/12;


echo ("Velikost jedne mesicni splatky: <b> $mes_spl    ,- € </b>");

echo "<table width='100%' class='calc'> <tr> 
<th> Rok </th> 
<th> Splátka </th> 
<th> Úrok </th> 
<th> Istina </th> 
<th> Zustatek </th> </tr>";



for($rok=0; $rok<=$let; $rok++){

  if($rok == 0) {     
    $zustatek_uveru[$rok]   = $H;
    $urok[$rok]             = $sazba*$zustatek_uveru[$rok];
    $splatka[$rok]          = $A-$urok[$rok];
    $celk[$rok]             = $A-$urok[$rok]; 
    
  } else {
  
  
  
    $celk[$rok]             = $A;
    $zustatek_uveru[$rok]   = $zustatek_uveru[$rok-1]-$splatka[$rok-1];
    $urok[$rok]             = $sazba*$zustatek_uveru[$rok];
    $splatka[$rok]          = $A-$urok[$rok];  
  
  }
  
  
  echo "<tr>
  <td >  $rok. rok </td> 
  <td >  ".round($celk[$rok], 2).",-€ </td> 
  <td >  ".round($urok[$rok], 2).",-€ </td>   
  <td >  ".round($splatka[$rok], 2)." </td> 
  <td >  ".round($zustatek_uveru[$rok], 2).",-€ </td> 
  
  </tr>";
    

}
                        
echo "</table >";