Ini.php

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<?php
#require_once 'Zend/Config.php';


class Zend_Config_Ini extends Zend_Config
{
    protected $_nestSeparator = '.';

    protected $_sectionSeparator = ':';

    protected $_skipExtends = false;

    public function __construct($filename, $section = null, $options = false)
    {
        if (empty($filename)) {
            #require_once 'Zend/Config/Exception.php';
            throw new Zend_Config_Exception('Filename is not set');
        }

        $allowModifications = false;
        if (is_bool($options)) {
            $allowModifications = $options;
        } elseif (is_array($options)) {
            if (isset($options['allowModifications'])) {
                $allowModifications = (bool) $options['allowModifications'];
            }
            if (isset($options['nestSeparator'])) {
                $this->_nestSeparator = (string) $options['nestSeparator'];
            }
            if (isset($options['skipExtends'])) {
                $this->_skipExtends = (bool) $options['skipExtends'];
            }
        }

        $iniArray = $this->_loadIniFile($filename);

        if (null === $section) {
            // Load entire file
            $dataArray = array();
            foreach ($iniArray as $sectionName => $sectionData) {
                if(!is_array($sectionData)) {
                    $dataArray = $this->_arrayMergeRecursive($dataArray, $this->_processKey(array(), $sectionName, $sectionData));
                } else {
                    $dataArray[$sectionName] = $this->_processSection($iniArray, $sectionName);
                }
            }
            parent::__construct($dataArray, $allowModifications);
        } else {
            // Load one or more sections
            if (!is_array($section)) {
                $section = array($section);
            }
            $dataArray = array();
            foreach ($section as $sectionName) {
                if (!isset($iniArray[$sectionName])) {
                    #require_once 'Zend/Config/Exception.php';
                    throw new Zend_Config_Exception("Section '$sectionName' cannot be found in $filename");
                }
                $dataArray = $this->_arrayMergeRecursive($this->_processSection($iniArray, $sectionName), $dataArray);

            }
            parent::__construct($dataArray, $allowModifications);
        }

        $this->_loadedSection = $section;
    }

    protected function _parseIniFile($filename)
    {
        set_error_handler(array($this, '_loadFileErrorHandler'));
        $iniArray = parse_ini_file($filename, true); // Warnings and errors are suppressed
        restore_error_handler();

        // Check if there was a error while loading file
        if ($this->_loadFileErrorStr !== null) {
            #require_once 'Zend/Config/Exception.php';
            throw new Zend_Config_Exception($this->_loadFileErrorStr);
        }

        return $iniArray;
    }

    protected function _loadIniFile($filename)
    {
        $loaded = $this->_parseIniFile($filename);
        $iniArray = array();
        foreach ($loaded as $key => $data)
        {
            $pieces = explode($this->_sectionSeparator, $key);
            $thisSection = trim($pieces[0]);
            switch (count($pieces)) {
                case 1:
                    $iniArray[$thisSection] = $data;
                    break;

                case 2:
                    $extendedSection = trim($pieces[1]);
                    $iniArray[$thisSection] = array_merge(array(';extends'=>$extendedSection), $data);
                    break;

                default:
                    #require_once 'Zend/Config/Exception.php';
                    throw new Zend_Config_Exception("Section '$thisSection' may not extend multiple sections in $filename");
            }
        }

        return $iniArray;
    }

    protected function _processSection($iniArray, $section, $config = array())
    {
        $thisSection = $iniArray[$section];

        foreach ($thisSection as $key => $value) {
            if (strtolower($key) == ';extends') {
                if (isset($iniArray[$value])) {
                    $this->_assertValidExtend($section, $value);

                    if (!$this->_skipExtends) {
                        $config = $this->_processSection($iniArray, $value, $config);
                    }
                } else {
                    #require_once 'Zend/Config/Exception.php';
                    throw new Zend_Config_Exception("Parent section '$section' cannot be found");
                }
            } else {
                $config = $this->_processKey($config, $key, $value);
            }
        }
        return $config;
    }

    protected function _processKey($config, $key, $value)
    {
        if (strpos($key, $this->_nestSeparator) !== false) {
            $pieces = explode($this->_nestSeparator, $key, 2);
            if (strlen($pieces[0]) && strlen($pieces[1])) {
                if (!isset($config[$pieces[0]])) {
                    if ($pieces[0] === '0' && !empty($config)) {
                        // convert the current values in $config into an array
                        $config = array($pieces[0] => $config);
                    } else {
                        $config[$pieces[0]] = array();
                    }
                } elseif (!is_array($config[$pieces[0]])) {
                    #require_once 'Zend/Config/Exception.php';
                    throw new Zend_Config_Exception("Cannot create sub-key for '{$pieces[0]}' as key already exists");
                }
                $config[$pieces[0]] = $this->_processKey($config[$pieces[0]], $pieces[1], $value);
            } else {
                #require_once 'Zend/Config/Exception.php';
                throw new Zend_Config_Exception("Invalid key '$key'");
            }
        } else {
            $config[$key] = $value;
        }
        return $config;
    }
}