Extends codeigniter input class to accept put and delete requests ........ Just Put this file in application/core/MY_Input.php ........ NOW you can $data=$this->input->put('key');

MY_Input.php

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class MY_Input extends CI_Input {

    /**
     * Variables
     * 
     */
    
    protected $delete;
    protected $put;
    protected $post;
    
	// --------------------------------------------------------------------
	
    /**
     * Constructor
     * 
     */
    function __construct() 
    {
    	log_message('debug', "MY_Input Class Initialized");
    	
        parent::__construct();
        
        //get request type or override type
        if ($this->server('REQUEST_METHOD') == 'DELETE' ||
        	$this->server('HTTP_X_HTTP_METHOD_OVERRIDE') == 'DELETE') {
            $this->delete = file_get_contents('php://input');
            //parse and clean request
            $this->_parse_request($this->delete);
            
        } elseif ($this->server('REQUEST_METHOD') == 'PUT' ||
        		  $this->server('HTTP_X_HTTP_METHOD_OVERRIDE') == 'PUT' ) {
            $this->put = file_get_contents('php://input');
            //parse and clean request
            $this->_parse_request($this->put);
			$this->parse_raw_http_request($this->put);
        } elseif ($this->server('REQUEST_METHOD') == 'POST' ||
        		  $this->server('HTTP_X_HTTP_METHOD_OVERRIDE') == 'POST' ) {
        	$this->post = file_get_contents('php://input');
            $this->_parse_request($this->post);
        }
    }
	// --------------------------------------------------------------------
     
	/**
	* Fetch an item from the POST JSON array
	*
	* @access	public
	* @param	string
	* @param	bool
	* @return	string
	*/
	function post_json($index = NULL, $xss_clean = FALSE)
	{
		// Check if a field has been provided
		if ($index === NULL AND ! empty($this->post) )
		{
			$post = array();

			// Loop through the full put array and return it
			foreach (array_keys($this->post) as $key)
			{
				$post[$key] = $this->_fetch_from_array($this->post, $key, $xss_clean);
			}
			return $post;
		}
		
		return $this->_fetch_from_array($this->post, $index, $xss_clean);
	}


	// --------------------------------------------------------------------


	/**
	* Fetch an item from the PUT array
	*
	* @access	public
	* @param	string
	* @param	bool
	* @return	string
	*/
	function put($index = NULL, $xss_clean = FALSE)
	{
		// Check if a field has been provided
		if ($index === NULL AND ! empty($this->put) )
		{
			$put = array();

			// Loop through the full put array and return it
			foreach (array_keys($this->put) as $key)
			{
				$put[$key] = $this->_fetch_from_array($this->put, $key, $xss_clean);
			}
			return $put;
		}

		return $this->_fetch_from_array($this->put, $index, $xss_clean);
	}


	// --------------------------------------------------------------------

	/**
	* Fetch an item from the DELETE array
	*
	* @access	public
	* @param	string
	* @param	bool
	* @return	string
	*/
	function delete($index = NULL, $xss_clean = FALSE)
	{
		// Check if a field has been provided
		if ($index === NULL AND ! empty($this->delete) )
		{
			$delete = array();

			// Loop through the full delete array and return it
			foreach (array_keys($this->delete) as $key)
			{
				$delete[$key] = $this->_fetch_from_array($this->delete, $key, $xss_clean);
			}
			return $delete;
		}

		return $this->_fetch_from_array($this->delete, $index, $xss_clean);
	}


	// --------------------------------------------------------------------

	/**
	* Extend Sanitize Data
	*
	* @access	private
	* @return	void
	*/
	private function _sanitize_request(&$data)
	{	
		//convert object to array
		$object = $data;
		$data = array();
		
		//clean put variables
		foreach( $object as $key => $val)
		{
                        if(!is_object ($val) )                
			     $data[$this->_clean_input_keys($key)] = $this->_clean_input_data($val);
		}
		
		log_message('debug', "Global PUT and DELETE data sanitized");
	}
	
	// --------------------------------------------------------------------

	/**
	* Parse json request
	*
	* @access	private
	* @return	void
	*/
	private function _parse_request(&$array)
	{
		//for now only json :(, will add more as they come up
		if( $this->server('CONTENT_TYPE') == "application/json" ||
		    $this->server('CONTENT_TYPE') == "application/json; charset=UTF-8") {
			$array = json_decode($array);
		}else{
			parse_str( $array, $array );
		}
		
		$this->_sanitize_request($array);
	}
	
	// --------------------------------------------------------------------
	
	/**
	 * Parse raw HTTP request data
	 *
	 * Pass in $a_data as an array. This is done by reference to avoid copying
	 * the data around too much.
	 *
	 * Any files found in the request will be added by their field name to the
	 * $data['files'] array.
	 *
	 * @param   array  Empty array to fill with data
	 * @return  array  Associative array of request data
	 */
    function parse_raw_http_request(array &$a_data)
    {
      // read incoming data
      $input = file_get_contents('php://input');

      // grab multipart boundary from content type header
      preg_match('/boundary=(.*)$/', $_SERVER['CONTENT_TYPE'], $matches);

      // content type is probably regular form-encoded
      if (!count($matches))
      {
        // we expect regular puts to containt a query string containing data
        parse_str(urldecode($input), $a_data);
        return $a_data;
      }

      $boundary = $matches[1];

      // split content by boundary and get rid of last -- element
      $a_blocks = preg_split("/-+$boundary/", $input);
      array_pop($a_blocks);

      // loop data blocks
      foreach ($a_blocks as $id => $block)
      {
        if (empty($block))
          continue;

        // you'll have to var_dump $block to understand this and maybe replace \n or \r with a visibile char

        // parse uploaded files
        if (strpos($block, 'application/octet-stream') !== FALSE)
        {
          // match "name", then everything after "stream" (optional) except for prepending newlines
          preg_match("/name=\"([^\"]*)\".*stream[\n|\r]+([^\n\r].*)?$/s", $block, $matches);
          $a_data['files'][$matches[1]] = $matches[2];
        }
        // parse all other fields
        else
        {
          // match "name" and optional value in between newline sequences
          preg_match('/name=\"([^\"]*)\"[\n|\r]+([^\n\r].*)?\r$/s', $block, $matches);
          $a_data[$matches[1]] = $matches[2];
        }
      }
    }

	
}
// END MY_Input Class

/* End of file MY_Input.php */
/* Location: ./application/core/MY_Input.php */
?>