/**
* Create a GD image resource from given input.
*
* This method tried to detect what the input, if it is a file the
* createImageFromFile will be called, otherwise createImageFromString().
*
* @param mixed $input The input for creating an image resource. The value
* may a string of filename, string of image data or
* GD image resource.
*
* @return resource|PEAR_Error An GD image resource on success or
* PEAR_Error on failure.
* @access public
* @see createImageFromFile()
* @see createImageFromString()
*/
function createImage($input)
{
if (is_file($input)) {
return Image_Tools::createImageFromFile($input);
} else {
if (is_string($input)) {
return Image_Tools::createImageFromString($input);
} else {
if (Image_Tools::isGDImageResource($input)) {
return $input;
}
}
}
return PEAR::raiseError('Invalid source image given, valid to create image resource.');
}
