Autodimensionar imagenes

[xcorpion]

mira yo uso esta clase para cambiar el tamaño de las imagenes
si tienes las imagenes nombradas numericamente y en forma continua es facil solo tendras que utilizar la estructura de control while para repetir la operacion tantas veces como sea necesario. Tambien puedes crear una lista de archivos que estan en la carpeta por medio del comando dir *.* /b -> listaarchivos.txt del interprete de comandos de windows.

Código PHP:

  <?
##############################################
# Shiege Iseng Resize Class
# 11 March 2003
# [email][email protected][/email]
# [url]http://kentung.f2o.org/scripts/thumbnail/[/url]
################
# Thanks to :
# Dian Suryandari <[email protected]>
class thumbnail
{
    var $img;
 
    function thumbnail($imgfile)
    {
        //detect image format
        $this->img["format"]=ereg_replace(".*\.(.*)$","\\1",$imgfile);
        $this->img["format"]=strtoupper($this->img["format"]);
        if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
            //JPEG
            $this->img["format"]="JPEG";
            $this->img["src"] = ImageCreateFromJPEG ($imgfile);
        } elseif ($this->img["format"]=="PNG") {
            //PNG
            $this->img["format"]="PNG";
            $this->img["src"] = ImageCreateFromPNG ($imgfile);
        } elseif ($this->img["format"]=="GIF") {
            //GIF
            $this->img["format"]="GIF";
            $this->img["src"] = ImageCreateFromGIF ($imgfile);
        } elseif ($this->img["format"]=="WBMP") {
            //WBMP
            $this->img["format"]="WBMP";
            $this->img["src"] = ImageCreateFromWBMP ($imgfile);
        } else {
            //DEFAULT
            echo "Not Supported File";
            exit();
        }
        @$this->img["lebar"] = imagesx($this->img["src"]);
        @$this->img["tinggi"] = imagesy($this->img["src"]);
        //default quality jpeg
        $this->img["quality"]=75;
    }
 
    function size_height($size=100)
    {
        //height
        $this->img["tinggi_thumb"]=$size;
        @$this->img["lebar_thumb"] = ($this->img["tinggi_thumb"]/$this->img["tinggi"])*$this->img["lebar"];
    }
 
    function size_width($size=100)
    {
        //width
        $this->img["lebar_thumb"]=$size;
        @$this->img["tinggi_thumb"] = ($this->img["lebar_thumb"]/$this->img["lebar"])*$this->img["tinggi"];
    }
 
    function size_auto($size=75)
    {
        //size
        if ($this->img["lebar"]>=$this->img["tinggi"]) {
            $this->img["lebar_thumb"]=$size;
            @$this->img["tinggi_thumb"] = ($this->img["lebar_thumb"]/$this->img["lebar"])*$this->img["tinggi"];
        } else {
            $this->img["tinggi_thumb"]=$size;
            @$this->img["lebar_thumb"] = ($this->img["tinggi_thumb"]/$this->img["tinggi"])*$this->img["lebar"];
         }
    }
 
    function jpeg_quality($quality=75)
    {
        //jpeg quality
        $this->img["quality"]=$quality;
    }
 
    function show()
    {
        //show thumb
        @Header("Content-Type: image/".$this->img["format"]);
 
        /* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
        $this->img["des"] = ImageCreateTrueColor($this->img["lebar_thumb"],$this->img["tinggi_thumb"]);
            @imagecopyresized ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
 
        if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
            //JPEG
            imageJPEG($this->img["des"],"",$this->img["quality"]);
        } elseif ($this->img["format"]=="PNG") {
            //PNG
            imagePNG($this->img["des"]);
        } elseif ($this->img["format"]=="GIF") {
            //GIF
            imageGIF($this->img["des"]);
        } elseif ($this->img["format"]=="WBMP") {
            //WBMP
            imageWBMP($this->img["des"]);
        }
    }
 
    function save($save="")
    {
        //save thumb
        if (empty($save)) $save=strtolower("./thumb". $imgfile . $this->img["format"]);
        /* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
        $this->img["des"] = ImageCreateTrueColor($this->img["lebar_thumb"],$this->img["tinggi_thumb"]);
            @imagecopyresized ($this->img["des"], $this->img["src"], 0, 0, 0, 0, $this->img["lebar_thumb"], $this->img["tinggi_thumb"], $this->img["lebar"], $this->img["tinggi"]);
 
        if ($this->img["format"]=="JPG" || $this->img["format"]=="JPEG") {
            //JPEG
            imageJPEG($this->img["des"],"$save",$this->img["quality"]);
        } elseif ($this->img["format"]=="PNG") {
            //PNG
            imagePNG($this->img["des"],"$save");
        } elseif ($this->img["format"]=="GIF") {
            //GIF
            imageGIF($this->img["des"],"$save");
        } elseif ($this->img["format"]=="WBMP") {
            //WBMP
            imageWBMP($this->img["des"],"$save");
        }
    }
}
 ?>