Function addWatermark

Adds a watermark to a resized image. If no watermark is set it just returns the image

Package: core\functions\functions-image
Since: ZenphotoCMS 1.5.3 - consolidated from cacheImage() and full-image.php
Located at functions-image.php

Parameters summary
`resource\|object`	`$newim`	GD image resource or Imagick object
`string`	`$watermark_image`	The path to the watermark to use
`string`	`$imgfile = null`	Path to the image being processed (optionally for debugging only)

Return value summary
`resource\|object`	resource\|object

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Function addWatermark