( string image )
imagecreatefromstring() returns an image identifier representing the image obtained from the given string. These types will be automatically detected if your build of PHP
supports them: JPEG, PNG, GIF, WBMP, and GD2.
An image resource will be returned on success. FALSE is returned if the image type is unsupported, the data is not in a recognised format, or the image is corrupt
and cannot be loaded.