Durga Shankar Gupta

Resize a custom image and display it on the site in special sized areas.

Let’s we have an image located in the media folder /media/example.jpg

First, we need to initialize the $folderURL variable:

    $folderURL= Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA);

Then, the image URL:

    $imageURL= $folderURL. $fileName;

Note: The format for $fileName = can be: ‘example.jpg’; or ‘testfolder/example.jpg’;

Next, we need to specify the full path for the existing file name ($basePath) and the name of the file that needs to be resized ($newPath). In this case they are:

    $basePath= Mage::getBaseDir(Mage_Core_Model_Store::URL_TYPE_MEDIA) . DS . $fileName;

    $newPath= Mage::getBaseDir(Mage_Core_Model_Store::URL_TYPE_MEDIA) . DS . "resized". DS . $fileName;

After this, we need to create an instance of Varien_Image class

    //$basePath - origin file location
    $imageObj= newVarien_Image($basePath);

    $imageObj->constrainOnly(TRUE);

    $imageObj->keepAspectRatio(FALSE);

    $imageObj->keepFrame(FALSE);

    //$width, $height - sizes you need (Note: when keepAspectRatio(TRUE), height would be ignored)

    $imageObj->resize($width, $height);

    //$newPath - name of resized image

    $imageObj->save($newPath);

Then, we need to get the URL of the resized image:

$resizedURL= Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA) . "resized". DS . $fileName;

Lastly, let’s make the function resizeImg($fileName, $width, $height = "")

public functionresizeImg($fileName, $width, $height= '')

{

$folderURL= Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA);

$imageURL= $folderURL. $fileName;

$basePath= Mage::getBaseDir(Mage_Core_Model_Store::URL_TYPE_MEDIA) . DS . $fileName;

$newPath= Mage::getBaseDir(Mage_Core_Model_Store::URL_TYPE_MEDIA) . DS . "resized". DS . $fileName;

//if width empty then return original size image's URL

if($width!= '') {

//if image has already resized then just return URL

if(file_exists($basePath) && is_file($basePath) && !file_exists($newPath)) {

$imageObj= newVarien_Image($basePath);

$imageObj->constrainOnly(TRUE);

$imageObj->keepAspectRatio(FALSE);

$imageObj->keepFrame(FALSE);

$imageObj->resize($width, $height);

$imageObj->save($newPath);

}

$resizedURL= Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_MEDIA) . "resized". DS . $fileName;

} else{

$resizedURL= $imageURL;

}

return$resizedURL;

}

That’s it! I hope this article helps you. Until next time, Happy Coding!