PHP GD - juntar fotos

[lags cap]

Boa tarde amigos, já revirei a internet a procura de uma função que utilize a biblioteca GD para unir vários arquivos de imagem em um só, mas não encontrei nada.

Alguém pode sugerir um?

Preciso de uma função que pegue todas as imagens de um diretório "x" e una-as uma ao lado da outra, na horizontal.

Testei alguns scripts mas nada funcionou.

Caso alguém conheça, preciso gerar estas imagens para trabalhar com CSS SPRITES.

Grato

[lags cap]

Olá

Consegui editar uma classe para unir as imagens que preciso.

Agora basta SALVAR esta imagem no pc após gerá-la

Não estou conseguindo salvar, o código gera perfeitamente mas não copia a imagem para o pc.

Segue o código:

<?php

$sprite = new spritify();


$files = glob("test_images/10-*home*.*");

for ($i=1; $i<count($files); $i++)
 { 
$num = $files[$i];

 $sprite->add_image($num, "jpeg");

 //echo $num;

 }





//retrieving error
$arr = $sprite->get_errors();
//if there are any then output them
if(!empty($arr))
{
    foreach($arr as $error)
    {
        echo "<p>".$error."</p>";
    }
}
else
{
    //returns GD image resource
    //$img = $sprite->get_resource();
    
    //outputs image to browser
    $sprite->output_image();    
}

/************************************************************* 
 * This script is developed by Arturs Sosins aka ar2rsawseen, http://webcodingeasy.com 
 * Fee free to distribute and modify code, but keep reference to its creator 
 *
 * This class can generate CSS sprite image from multiple provided images
 * Generated image can be outputted to browser, saved to specified location, etc.
 * This class also generates CSS code for sprite image, using element ID's provided with image.
 * It facilitates CSS sprite implementations to existing website structures
 * 
 * For more information, examples and online documentation visit:  
 * http://webcodingeasy.com/PHP-classes/CSS-sprite-class-for-creating-sprite-image-and-CSS-code-generation
**************************************************************/
class spritify
{
    //image type to save as (for possible future modifications)
    private $image_type = "png";
    //array to contain images and image informations
    private $images = array();
    //array for errors
    private $errors = array();
    
    //gets errors
    public function get_errors(){
        return $this->errors;
    }
    
    /*
     * adds new image
     * first parameter - path to image file like ./images/image.png
     * second parameter (optiona) - ID of element fro css code generation
     */
    public function add_image($image_path, $id="elem"){
        if(file_exists($image_path))
        {
            $info = getimagesize($image_path);
            if(is_array($info))
            {
                $new = sizeof($this->images);
                $this->images[$new]["path"] = $image_path;
                $this->images[$new]["width"] = $info[0];
                $this->images[$new]["height"] = $info[1];
                $this->images[$new]["mime"] = $info["mime"];
                $type = explode("/", $info['mime']);
                $this->images[$new]["type"] = $type[1];
                $this->images[$new]["id"] = $id;
            }
            else
            {
                $this->errors[] = "Provided file \"".$image_path."\" isn't correct image format";
            }
        }
        else
        {
            $this->errors[] = "Provided file \"".$image_path."\" doesn't exist";
        }
    }
    
    //calculates width and height needed for sprite image
    private function total_size(){
        $arr = array("width" => 0, "height" => 0);
        foreach($this->images as $image)
        {
            if($arr["height"] < $image["height"])
            {
                $arr["height"] = $image["height"];
            }
            $arr["width"] += $image["width"];
        }
        return $arr;
    }
    
    //creates sprite image resource
    private function create_image(){
        $total = $this->total_size();
        $sprite = imagecreatetruecolor($total["width"], $total["height"]);
        imagesavealpha($sprite, true);
        $transparent = imagecolorallocatealpha($sprite, 0, 0, 0, 127);
        imagefill($sprite, 0, 0, $transparent);
        $top = 0;
    $side = 0;
        foreach($this->images as $image)
        {
            $func = "imagecreatefrom".$image['type'];
            $img = $func($image["path"]);
            imagecopy( $sprite, $img, $side, ($total["height"] - $image["height"]), 0, 0,  $image["width"], $image["height"]);


//imagecopy( $sprite, $img, ($total["width"] - $image["width"]), $top, 0, 0,  $image["width"], $image["height"]);

            $top += $image["height"];
            $side += $image["width"];
        }
        return $sprite;

    }
    
    //outputs image to browser (makes php file behave like image)
    public function output_image(){
        $sprite = $this->create_image();
        header('Content-Type: image/'.$this->image_type);
        $func = "image".$this->image_type;
        $func($sprite); 
        ImageDestroy($sprite);
    }
    
    /*
     * generates css code using ID provided when adding images or pseido ID "elem"
     * $path parameter (optional) - takes path to already generated css_sprite file or uses default file for pseudo code generation
     */
    public function generate_css($path = "/css_sprite.png"){
        $total = $this->total_size();
        $top = $total["height"];
        $css = "";
        foreach($this->images as $image)
        {
            if(strpos($image["id"],"#") === false)
            {
                $css .= "#".$image["id"]." { ";
            }
            else
            {
                $css .= $image["id"]." { ";
            }
            $css .= "background-image: url(".$path."); ";
            $css .= "background-position: ".($image["width"] - $total["width"])."px ".($top - $total["height"])."px; ";
            $css .= "width: ".$image['width']."px; ";
            $css .= "height: ".$image['height']."px; ";
            $css .= "}\n";
            $top -= $image["height"];
        }
        return $css;
    }
    
    /*
     * if $path provided, than saves image to path
     * else forces image download
     */
    public function safe_image($path = ""){
        $sprite = $this->create_image();
        $func = "image".$this->image_type;
        if(trim($path) == "")
        {
            header('Content-Description: File Transfer');
            header('Content-Type: image/'.$this->image_type);
            header('Content-Disposition: attachment; filename=css_sprite.'.$this->image_type);
            header('Content-Transfer-Encoding: binary');
            header('Expires: 0');
            header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
            header('Pragma: public');
            header('Content-Length: ' . filesize($sprite));
            ob_clean();
            flush();
            $func($sprite); 

    
        }
        else
        {
            $func($sprite, $path); 

        }

        ImageDestroy($sprite);
    }
    
    //return image resource
    public function get_resource(){
        $sprite = $this->create_image();

        return $sprite;
    }
}

    

?>

[ESerra]

O PHP nunca vai conseguir salvar a imagem no pc do usuário...