[PHP] Zeilenumbruch im Bild

<?php

include("inc/config.inc.php");
include("functions/functions.php");
$get_id = $_GET['id'];
if(is_numeric($get_id) || $get_id == ""){
 if($get_id != ""){
 $sql = 'SELECT `points` as num,`name` as name FROM `welt_20_tribe` WHERE `id`='. $get_id;
 $temp = mysql_query($sql) or die (mysql_error());
 mysql_close($link);
 $text = mysql_fetch_assoc($temp);
 if($text == "")
 die('Diesen Benutzer gibt es nicht !');
 
 $result = $text['name'] ." ". $text['num'] ." Punkte";
 imageCenterString(200, 60, $result, 5);
 }else{
 echo '<form action="index.php?id" method="GET">
 SpielerID: <input type="text" maxlength="7" name="id" />
 <input type="submit" value="Generieren">
 </form>';
 }
 }else{
 die ('Es ist nur die Eingabe von Zahlen m&ouml;glich !');
}

?>

<?php 

function imageCenterString( $imgw, $imgh, $image_text = '', $text_size=5 )
{
 $im = imagecreate( $imgw, $imgh );
 
 // white background and blue text
 $bg = imagecolorallocate($im, 255, 255, 255);
 $textcolor = imagecolorallocate($im, 0, 0, 255);
 
 $t_h = $t_w = $t_x = $t_y = 0;
 $base_w =9; $base_h = 16;
 $m = 0.88;
 switch ( $text_size )
 {
 case 1: $t_w = $base_w*pow(($m*.98),4);
 $t_h = $base_h*pow(($m*.98),4);
 break;
 case 2: $t_w = $base_w*pow($m,3);
 $t_h = $base_h*pow($m,3);
 break;
 case 3: $t_w = $base_w*pow($m,2);
 $t_h = $base_h*pow($m,2);
 break;
 case 4: $t_w = $base_w*$m;
 $t_h = $base_h*$m;
 break;
 case 5: $t_w = $base_w;
 $t_h = $base_h;
 break;
 default:
 if ( $text_size >= 5 ) // set to 5
 { $t_w = $base_w; $t_h = $base_h; }
 if ( $text_size < 5 ) // set to 1
 {
 $t_w = $base_w*pow(($m*.98),4);
 $t_h = $base_h*pow(($m*.98),4);
 }
 break;
 }
 
 $text_array = array();
 
 $max = floor($imgw/$t_w);
 
 for( $i=0; strlen($image_text) > 0; $i += $max)
 {
 array_push($text_array, substr($image_text,0,$max));
 if ( strlen($image_text) >= $max )
 { $image_text = substr($image_text,$max); }
 else
 { $image_text = ''; }
 }
 
 $t_y = ($imgh/2) - ($t_h*count($text_array)/2);

 foreach ( $text_array as $text )
 {
 $t_x = ($imgw/2)-($t_w*strlen($text)/2);
 imagestring($im, $text_size, $t_x, $t_y,
 $text, $textcolor);
 $t_y += $t_h;
 }

 // output the image
 header("Content-type: image/png");
 imagepng($im);
}

 ?>