Uloženie obrázku po vygenerovaní

<?php
$font_file  = 'segoesc.ttf' ;
$font_size  = '16' ;
$font_color = '#000000' ;
$background_color = '#9966CC' ;
$transparent_background  = false ;
$cache_images = false ;
$cache_folder = 'cache' ;

/*
  ---------------------------------------------------------------------------
   For basic usage, you should not need to edit anything below this comment.
   If you need to further customize this script's abilities, make sure you
   are familiar with PHP and its image handling capabilities.
  ---------------------------------------------------------------------------
*/

$mime_type = 'image/png' ;
$extension = '.png' ;
$send_buffer_size = 4096 ;

// check for GD support
if(!function_exists('ImageCreate'))
    fatal_error('Error: Server nepodporuje ImageCreator!') ;                     

// clean up text
if(empty($_GET['text']))
    fatal_error('Error: Text nenájdený!') ;
    
$text = iconv("windows-1250", "utf-8", $_GET['text']);
if(get_magic_quotes_gpc())
    $text = stripslashes($text) ;

// look for cached copy, send if it exists
$hash = md5(basename($font_file) . $font_size . $font_color .
            $background_color . $transparent_background . $text) ;
$cache_filename = $cache_folder . '/' . $hash . $extension ;
if($cache_images && ($file = @fopen($cache_filename,'rb')))
{
    header('Content-type: ' . $mime_type) ;
    while(!feof($file))
        print(($buffer = fread($file,$send_buffer_size))) ;
    fclose($file) ;
    exit ;
}

// check font availability
$font_found = is_readable($font_file) ;
if(!$font_found)
{
    fatal_error('Error: Font nenájdený!') ;
}

// create image
$background_rgb = hex_to_rgb($background_color) ;
$font_rgb = hex_to_rgb($font_color) ;
$dip = get_dip($font_file,$font_size) ;
$box = @ImageTTFBBox($font_size,0,$font_file,$text) ;
$image = @ImageCreate(abs($box[2]-$box[0]+3),abs($box[5]-$dip)) ;
if(!$image || !$box)
{
    fatal_error('Error: Chyba pri vytváraní obrázku!') ;
}

// allocate colors and draw text
$background_color = @ImageColorAllocate($image,$background_rgb['red'],
    $background_rgb['green'],$background_rgb['blue']) ;
$font_color = ImageColorAllocate($image,$font_rgb['red'],
    $font_rgb['green'],$font_rgb['blue']) ;   
ImageTTFText($image,$font_size,0,-$box[0],abs($box[5]-$box[3])-$box[1],
    $font_color,$font_file,$text) ;

// set transparency
if($transparent_background)
    ImageColorTransparent($image,$background_color) ;

header('Content-type: ' . $mime_type) ;
ImagePNG($image) ;

// save copy of image for cache
if($cache_images)
{
    @ImagePNG($image,$cache_filename) ;
}

ImageDestroy($image) ;
exit ;


/*
    try to determine the "dip" (pixels dropped below baseline) of this
    font for this size.
*/
function get_dip($font,$size)
{
    $test_chars = 'abcdefghijklmnopqrstuvwxyz' .
                  'ABCDEFGHIJKLMNOPQRSTUVWXYZ' .
                  '1234567890' .
                  '!@#$%^&*()\'"\\/;.,`~<>[]{}-+_-=' ;
    $box = @ImageTTFBBox($size,0,$font,$test_chars) ;
    return $box[3] ;
}


/*
    attempt to create an image containing the error message given. 
    if this works, the image is sent to the browser. if not, an error
    is logged, and passed back to the browser as a 500 code instead.
*/
function fatal_error($message)
{
    // send an image
    if(function_exists('ImageCreate'))
    {
        $width = ImageFontWidth(5) * strlen($message) + 10 ;
        $height = ImageFontHeight(5) + 10 ;
        if($image = ImageCreate($width,$height))
        {
            $background = ImageColorAllocate($image,255,255,255) ;
            $text_color = ImageColorAllocate($image,0,0,0) ;
            ImageString($image,5,5,5,$message,$text_color) ;    
            header('Content-type: image/png') ;
            ImagePNG($image) ;
            ImageDestroy($image) ;
            exit ;
        }
    }

    // send 500 code
    header("HTTP/1.0 500 Internal Server Error") ;
    print($message) ;
    exit ;
}


/* 
    decode an HTML hex-code into an array of R,G, and B values.
    accepts these formats: (case insensitive) #ffffff, ffffff, #fff, fff 
*/    
function hex_to_rgb($hex)
{
    // remove '#'
    if(substr($hex,0,1) == '#')
        $hex = substr($hex,1) ;

    // expand short form ('fff') color
    if(strlen($hex) == 3)
    {
        $hex = substr($hex,0,1) . substr($hex,0,1) .
               substr($hex,1,1) . substr($hex,1,1) .
               substr($hex,2,1) . substr($hex,2,1) ;
    }

    if(strlen($hex) != 6)
        fatal_error('Error: Chybná farba "'.$hex.'"') ;

    // convert
    $rgb['red'] = hexdec(substr($hex,0,2)) ;
    $rgb['green'] = hexdec(substr($hex,2,2)) ;
    $rgb['blue'] = hexdec(substr($hex,4,2)) ;

    return $rgb ;
}

?>