Image upload, depends https://github.com/elialejandro/zfimage

ImageController.php

<?php 
class ImagesController extends Zend_Controller_Action
{
    // ....
    private function _upload($imageName = null)
    {
        $path = realpath(APPLICATION_PATH . '/../public/uploads/');
    
        /*RECIBIENDO IMAGEN*/
        $upload = new Zend_File_Transfer_Adapter_Http();
        $upload->setDestination($path);
        
        if ( !$upload->isUploaded() ) {
            return is_null($imageName) ? null : $imageName;
        }
        if ( !is_null($imageName) && file_exists($path . "/" . $imageName) ) {
            list($name, $ext) = explode(".", $imageName);
            unlink( $path . '/' . $imageName);
            if ( file_exists($path."/".$name."-260x180.".$ext )) {
                unlink( $path."/".$name."-260x180.".$ext );
            }
        }
        $fileinfo = $upload->getFileInfo();
        
        switch ($fileinfo['imagen']['type']) {
            case 'image/png':
                $ext = 'png';
                break;
            case 'image/jpg':
            case 'image/jpeg':
                $ext = 'jpg';
                break;
        }
    
        $name = time();
        $filename = $name . '.' . $ext;
    
        $upload->addFilter('Rename', array(
                'target' => $path.'/'.
                $filename,
                'overwrite' => true
        ));
    
        if ( !$upload->receive() ) {
            $this->view->message = '<div class="error">'.
                    'Ha habido un problema:'.
                    $upload->getErrors().'</div>';
            return null;
        }
        
        $imagen = new ZFImage_Image( $path."/".$filename );
        if ( $imagen->getWidth() > $imagen->getHeight() ) {
            $imagen->attach(new ZFImage_Fx_Resize(700));
        } else {
            $imagen->attach(new ZFImage_Fx_Resize(0,350));
        }
    
        $imagen->attach(new ZFImage_Fx_Crop(700, 350));
    
        $src = $path."/".$filename;
        if ( $imagen->getImageType() == IMAGETYPE_JPEG ) {
            $imagen->imageJpeg($src,90);
        } else {
            $imagen->imagePng( $src);
        }
    
        $imagen = new ZFImage_Image( $path."/".$filename );
        if ( $imagen->getWidth() > $imagen->getHeight() ) {
            $imagen->attach(new ZFImage_Fx_Resize(0,180));
        } else {
            $imagen->attach(new ZFImage_Fx_Resize(260));
        }
        $imagen->attach(new ZFImage_Fx_Crop(260, 180));
    
        $src = $path."/".$name."-260x180.".$ext;
        if ( $imagen->getImageType() == IMAGETYPE_JPEG ) {
            $imagen->imageJpeg($src,90);
        } else {
            $imagen->imagePng( $src);
        }
    
        return $filename;
    }
}