Reads a file stored in the database as either text or binary file and returns its contents as a string.
|$href||The $href is a string containing a URI reference. It must identify a resource that can be read as text. If the URI is a relative URI then it is resolved relative to the base URI from the static context.|
If $encoding parameter is present and the URI points to a "text" file, the
encoding is ignored since all the files are in UTF-8 in the database. However,
if the URI points to a binary file, then an attempt is made to convert
it from the specified encoding and the string value of the results of the
conversion is returned. If the conversion fails, an exception is returned.
The $encoding parameter must be passed when the URI resolves to a binary
resource. An automatic encoding detector will be used if the