Разброс координат при наложении текста на картинку

function win_uni ($in) {  
      // $in = convert_cyr_string($in ,"w","i");  
//$in = iconv("windows-1251", "iso8859-5",$in);
$in = iconv("UTF-8", "iso8859-5",$in);
//echo $in."<br>";
        $out = "";  
        for ($i=0; $i < strlen($in); $i++) {  
                $char = ord($in[$i]); 
//echo  $in[$i]." - ".$char."<br>";
if ($char==240) {$out .= "N"; continue;}
                $out .= ($char > 175)?"&#".(1040+($char-176)).";":$in[$i]; }
        return $out;
}  
 
 
 
$k1=13.0;
$k2=10;
$k3=11.2;
 
//echo iconv_strlen($_POST['kurator'],"UTF-8");
 
$_POST['name'] = htmlspecialchars(stripslashes($_POST['name'])); 
$_POST['klass'] = stripslashes($_POST['klass']); 
$_POST['shkola'] = htmlspecialchars(stripslashes($_POST['shkola'])); 
$_POST['gorod'] = htmlspecialchars(stripslashes($_POST['gorod'])); 
$_POST['kurator'] = htmlspecialchars(stripslashes($_POST['kurator'])); 
$_POST['nomer'] = htmlspecialchars(stripslashes($_POST['nomer'])); 
  
 
if (strlen($_POST['name'])) { $fi=$_POST['name']; $w1=300-iconv_strlen($_POST['name'],"UTF-8")/2*$k1;  ImageTTFtext($pic, 16, 0, $w1, 465, $color, "gboldkur.ttf",win_uni($fi)); }
if (strlen($_POST['klass'])) { $klass=$_POST['klass']; $w2=300- iconv_strlen($_POST['klass'],"UTF-8")/2*$k2; ImageTTFtext($pic, 16, 0, $w2, 500, $color, "g.ttf", win_uni($klass)); }
if (strlen($_POST['shkola'])) { $shkola=$_POST['shkola']; $w3=290-iconv_strlen($_POST['shkola'],"UTF-8")/2*$k2; ImageTTFtext($pic, 16, 0, $w3, 525, $color, "g.ttf", win_uni($shkola)); }
if (strlen($_POST['gorod'])) { $gorod=$_POST['gorod']; $w4=300-iconv_strlen($_POST['gorod'],"UTF-8")/2*$k2; ImageTTFtext($pic, 16, 0, $w4, 550, $color, "g.ttf", win_uni($gorod)); }
if (strlen($_POST['kurator'])) { $_POST['kurator']="Куратор: ".$_POST['kurator']; $kurator=$_POST['kurator']; $w5=300-iconv_strlen($_POST['kurator'],"UTF-8")/2*$k3; ImageTTFtext($pic, 16, 0, $w5, 600, $color, "gkur.ttf", win_uni($kurator)); }
if (strlen($_POST['nomer'])) { $nomer=$_POST['nomer']; ImageTTFtext($pic, 12, 0, 180, 700, $color, "g.ttf", win_uni($nomer)); }
//echo $w5;