SoliTech GmbH

$image->resize('image.jpg', 100, 100, true,array('border'=>'0', 'alt'=>'My Image')

<?php
class ImageHelper extends Helper {
	var $helpers = array('Html'); 
	var $cacheDir = 'imagecache';
 
	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 
 
		$fullpath = ROOT.DS.APP_DIR.DS.WEBROOT_DIR.DS.$this-&gt;themeWeb.IMAGES_URL;
 
		$url = $fullpath.$path;
 
		if (!($size = getimagesize($url)))
			return; // image doesn't exist
 
		if ($aspect) { // adjust to aspect.
			if (($size[1]/$height) &gt; ($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 = $this-&gt;cacheDir.'/'.$width.'x'.$height.'_'.basename($path); // relative file
		$cachefile = $fullpath.$this-&gt;cacheDir.DS.$width.'x'.$height.'_'.basename($path);  // location on server
 
		if (file_exists($cachefile)) {
		$csize = getimagesize($cachefile);
		$cached = ($csize[0] == $width &amp;&amp; $csize[1] == $height); // image is cached
		if (@filemtime($cachefile) &lt; @filemtime($url)) // check if up to date
			$cached = false;
		} else {
			$cached = false;
		}
 
		if (!$cached) {
			$resize = ($size[0] &gt; $width || $size[1] &gt; $height) || ($size[0] &lt; $width || $size[1] &lt; $height);
		} else {
			$resize = false;
		}
 
		if ($resize) {
			$image = call_user_func('imagecreatefrom'.$types[$size[2]], $url);
			if (function_exists("imagecreatetruecolor") &amp;&amp; ($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 $this-&gt;output(sprintf($this-&gt;Html-&gt;image($relfile,$htmlAttributes)));
    }
}
?>