src/Archive/Tar.php
function extractInString($p_filename)
    {
        if ($this->_openRead()) {
            $v_result = $this->_extractInString($p_filename);
            $this->_close();
        } else {
            $v_result = null;
        }

        return $v_result;
    }
function extractInString($p_filename)
    {
        if ($this->_openRead()) {
            $v_result = $this->_extractInString($p_filename);
            $this->_close();
        } else {
            $v_result = null;
        }

        return $v_result;
    }
This method extract from the archive one file identified by $p_filename.
The return value is a string with the file content, or NULL on error.

@param string $p_filename The path of the file to extract in a string.

@return a string with the file content or NULL.
@access public