aseba

<?php  
class ResizerHelper extends AppHelper { 
    var $helpers = array('Html'); 
    var $cacheDir = 'image_cache'; // relative to IMAGES_URL path 
 
    /** 
     * Automatically resizes an image and returns formatted IMG tag 
     * 
     * @param string $path Path to the image file, relative to the webroot/img/ directory. 
     * @param integer $width Image of returned image 
     * @param integer $height Height of returned image 
     * @param boolean $aspect Maintain aspect ratio (default: true) 
     * @param array    $htmlAttributes Array of HTML attributes. 
     * @param boolean $return Wheter this method should return a value or output it. This overrides AUTO_OUTPUT.
     * @return mixed    Either string or echos the value, depends on AUTO_OUTPUT and $return. 
     * @access public 
     */ 
    function resize($path, $width, $height, $aspect = true, $htmlAttributes = array(), $return = false) {
        $types = array(1 => "gif", "jpeg", "png", "swf", "psd", "wbmp"); // used to determine image type
        $fullpath = ROOT.DS.APP_DIR.DS.WEBROOT_DIR.DS;
        $url = $fullpath.$path; 
        if (!($size = getimagesize($url)))  
            return; // image doesn't exist 
        if ($aspect) { // adjust to aspect. 
            if (($size[1]/$height) > ($size[0]/$width))  // $size[0]:width, [1]:height, [2]:type
                $width = ceil(($size[0]/$size[1]) * $height); 
            else  
                $height = ceil($width / ($size[0]/$size[1])); 
        } 
        $relfile = $this->webroot.$this->cacheDir.'/'.$width.'x'.$height.'_'.basename($path); // relative file 
        $cachefile = $fullpath.$this->cacheDir.DS.$width.'x'.$height.'_'.basename($path);  // location on server 
        if (file_exists($cachefile)) { 
            $csize = getimagesize($cachefile); 
            $cached = ($csize[0] == $width && $csize[1] == $height); // image is cached 
            if (@filemtime($cachefile) < @filemtime($url)) // check if up to date 
                $cached = false; 
        } else { 
            $cached = false; 
        } 
        if (!$cached) { 
            $resize = ($size[0] > $width || $size[1] > $height) || ($size[0] < $width || $size[1] < $height);
        } else { 
            $resize = false; 
        } 
        if ($resize) { 
            $image = call_user_func('imagecreatefrom'.$types[$size[2]], $url); 
            if (function_exists("imagecreatetruecolor") && ($temp = imagecreatetruecolor ($width, $height))) {
                imagecopyresampled ($temp, $image, 0, 0, 0, 0, $width, $height, $size[0], $size[1]);
              } else { 
                $temp = imagecreate ($width, $height); 
                imagecopyresized ($temp, $image, 0, 0, 0, 0, $width, $height, $size[0], $size[1]);
            } 
            call_user_func("image".$types[$size[2]], $temp, $cachefile); 
            imagedestroy ($image); 
            imagedestroy ($temp); 
        }          
        return $this->output(sprintf($this->Html->tags['image'], $relfile, null), $return); 
    } 
}
?>

var $helpers    = array('Html', 'Form', 'Session', 'Resizer');

<?php echo $this->Resizer->resize($image['url'], 150, 150, true) ?>