Converting php errors into an exception

ConvertError2Exception.php

<?php

class ConvertError2Exception
{
    /**
     * Error string.
     * Is null if there was no error
     *
     * @var string
     */
    protected $_errorStr = null;

    /**
     * Handle any errors
     *
     * @param integer $errno
     * @param string $errstr
     * @param string $errfile
     * @param integer $errline
     * @return void
     */
    protected function _errorHandler($errno, $errstr, $errfile, $errline)
    {
        if (null === $this->_errorStr) {
            $this->_errorStr = $errstr;
        } else {
            $this->_errorStr .= PHP_EOL . $errstr;
        }
    }

    /**
     * Example for using errorHandler:
     * Load the INI file from disk using parse_ini_file(). Use a private error
     * handler to convert any loading errors into an Exception
     *
     * @param string $filename
     * @throws Exception
     * @return array
     */
    protected function _parseIniFile($filename)
    {
        set_error_handler(array($this, '_errorHandler'));
        $iniArray = parse_ini_file($filename, true); // Warnings and errors are suppressed
        restore_error_handler();

        // Check if there was an error while loading file
        if ($this->_errorStr !== null) {
            throw new Exception($this->_errorStr);
        }

        return $iniArray;
    }
}