[RESOLVED] Image creation in PHP5

[LoganK]

Hi - thanks for reading my post.

I copied an image creation script from a book about PHP. It works fine on my website but when I run it on my computer (IIS, PHP v5) I get an error. I know my host has PHP v.4.something. I know it seems odd that I wrote code in PHP4 but am using PHP5 but that's a long story I don't want to get into.

My question is: does anyone know what's wrong in the code below? Any suggestions to make it work in PHP5?

 $button_text = "{$row['fname']} {$row['lname']}'s Bluewater Home Page";

// create an image of the right background and check size
$im = imagecreatefrompng ("blue-button.png");

$width_image = ImageSX($im);
$height_image = ImageSY($im);

// Our images need an 18 pixel margin in from the edge image
$width_image_wo_margins = $width_image - (2 * 18);
$height_image_wo_margins = $height_image - (2 * 18);

// Work out if the font size will fit and make it smaller until it does 
// Start out with the biggest size that will reasonably fit on our buttons
$font_size = 33;

do
{
  $font_size--;

  // find out the size of the text at that font size
  $bbox=imagettfbbox ($font_size, 0, "arial.ttf", $button_text);

  $right_text = $bbox[2];   // right co-ordinate
  $left_text = $bbox[0];    // left co-ordinate
  $width_text = $right_text - $left_text;  // how wide is it?
  $height_text = abs($bbox[7] - $bbox[1]);  // how tall is it?

} while ( $font_size>8 &&
          ( $height_text>$height_image_wo_margins ||
            $width_text>$width_image_wo_margins )
        );

if ( $height_text>$height_image_wo_margins ||
     $width_text>$width_image_wo_margins ) 
{
  // no readable font size will fit on button
  echo "Text given will not fit on button.<BR>";
}
else
{
  // We have found a font size that will fit
  // Now work out where to put it

  $text_x = $width_image/2.0 - $width_text/2.0;
  $text_y = $height_image/2.0 - $height_text/2.0 ;

  if ($left_text < 0)
      $text_x += abs($left_text);    // add factor for left overhang

  $above_line_text = abs($bbox[7]);   // how far above the baseline?
  $text_y += $above_line_text;        // add baseline factor 

  $text_y -= 2;  // adjustment factor for shape of our template

  $white = ImageColorAllocate ($im, 255, 255, 255);

  ImageTTFText ($im, $font_size, 0, $text_x, $text_y, $white, "arial.ttf",
                $button_text);

  Header ("Content-type: image/png");
  ImagePng ($im, "{$row['fname']}{$row['lname']}.png");
}

ImageDestroy ($im);