public function extToFormat(string $ext_file): string
    {
        if ($ext_file && !preg_match('/^[a-z0-9_\-]+$/ui', $ext_file)) {
            $ext = $this->c::fileExt($ext_file);
        } else {
            $ext = $ext_file;
        }
        switch (($ext = mb_strtolower($ext))) {
            case 'jpg':
                $format = 'jpeg';
                break;

            case 'png':
                $format = 'png32';
                break;

            default:
                $format = $ext;
        }
        return $format;
    }
public function extToFormat(string $ext_file): string
    {
        if ($ext_file && !preg_match('/^[a-z0-9_\-]+$/ui', $ext_file)) {
            $ext = $this->c::fileExt($ext_file);
        } else {
            $ext = $ext_file;
        }
        switch (($ext = mb_strtolower($ext))) {
            case 'jpg':
                $format = 'jpeg';
                break;

            case 'png':
                $format = 'png32';
                break;

            default:
                $format = $ext;
        }
        return $format;
    }
public function extToFormat ( string $ ext_file ) : string { if ( $ ext_file && ! preg_match ( '/^[a-z0-9_\-]+$/ui' , $ ext_file ) ) { $ ext = $ this -> c :: fileExt ( $ ext_file ) ; } else { $ ext = $ ext_file ; } switch ( ( $ ext = mb_strtolower ( $ ext ) ) ) { case 'jpg' : $ format = 'jpeg' ; break ; case 'png' : $ format = 'png32' ; break ; default : $ format = $ ext ; } return $ format ; }
Extension to format.

@since 17xxxx Imagick utils.

@param string $ext_file Extension (or file).

@return string Extension format.
Extension to format .