/**
* @param string $file путь к файлу
* @return bool|ImageFile
*/
static function isImage($filename, array $supportedImageTypes = array(IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_JPEG2000, IMAGETYPE_PNG))
{
try {
$image = new ImageFile($filename);
} catch (Exception $e) {
return false;
}
if (empty($supportedImageTypes) || in_array($image->getType(), $supportedImageTypes)) {
return $image;
}
return false;
}
private function imageTypeToFunctionName($function)
{
$name = '';
switch ($this->input->getType()) {
case IMAGETYPE_GIF:
$name = $function . 'gif';
break;
case IMAGETYPE_JPEG:
$name = $function . 'jpeg';
break;
case IMAGETYPE_PNG:
$name = $function . 'png';
break;
default:
Assert::isUnreachable('unsupported image type passed to resizer: %s', $this->input->getType());
}
return function_exists($name) ? $name : false;
}
