Scratch

<?PHP
//parser in spaces
$count = 1;
$string = $_GET['string'];
$parser = '';
while ($count < strlen($_GET['string'])){
    if(substr($string, $count, 1) == '_'){
        $parser = $parser . ' ';
    }
    else{
        $parser = $parser . (substr($string, $count, 1));
    }
    $count ++;
}
// Set font size
$font_size = 2;

// Create image width dependant on width of the string
$width  = imagefontwidth($font_size)*strlen($string);
// Set height to that of the font
$height = imagefontheight($font_size);
// Create the image pallette
$img = imagecreate($width,$height);
// Grey background
$bg    = imagecolorallocate($img, 222, 223, 223);
// Black font color
$color = imagecolorallocate($img, 0, 0, 0);
// Length of the string
$len = strlen($string);
// Y-coordinate of character, X changes, Y is static
$ypos = 0;
// Loop through the string
for($i=0;$i<$len;$i++){
    // Position of the character horizontally
    $xpos = $i * imagefontwidth($font_size);
    // Draw character
    imagechar($img, $font_size, $xpos, $ypos, $string, $color);
    // Remove character from string
    $string = substr($string, 1);   
   
}
// Return the image
header("Content-Type: image/gif");
imagegif($img);
// Remove image
imagedestroy($img);

?>

[img]http://www.blocks.scratchr.org/API.php?action=text&string=your_text[/img]