extension development - Salesforce data push

$pData['first_name'] = $myData['first_name'];
$pData['last_name'] = $myData['last_name'];
$pData['company'] = $myData['company'];
$pData['title'] = $myData['title'];
$pData['email'] = $myData['email'];
$pData['phone'] = $myData['phone'];
$pData['street'] = $myData['street'];
$pData['city'] = $myData['city'];
$pData['state'] = $myData['state'];
$pData['zip'] = $myData['zip'];
$pData['country'] = $myData['country'];

<?php

if ( ! defined('EXT'))
{
    exit('Invalid file request');
}

class sf_push
{
    var $settings        = array();  

    var $name            = 'Salesforce WebToLead';
    var $version         = '1.0';
    var $description     = 'An extension for pushing data to a salesforce account';
    var $settings_exist  = 'n';
    var $docs_url        = '';//'liquidbook.com';
    
    // -------------------------------
    //   Constructor - Extensions use this for settings
    // -------------------------------
    
    function sf_push($settings='')
    {
        $this->settings = $settings;
    }
    // END
    
    // --------------------------------
    //  Activate Extension
    // --------------------------------

    function activate_extension()
    {
        global $DB;

                $DB->query($DB->insert_string('exp_extensions',
                        array(
                        'extension_id'    => '',
                        'class'            => "sf_push",
                        'method'        => "push_data",
                        'hook'            => "member_member_register",
                        'settings'        => "",
                        'priority'        => 10,
                        'version'        => $this->version,
                        'enabled'        => "y"
                        )
                    )
                );
    }
    // END

    // --------------------------------
    //  Disable Extension
    // --------------------------------

    function disable_extension()
    {
        global $DB;

        $DB->query("DELETE FROM exp_extensions WHERE class = 'sf_push'");
    }
    // END    
    
    // --------------------------------
    //  Push Data
    // --------------------------------
    
    function push_data()
    {
        global $EXT;
        
        $edata = $EXT->call_extension('member_member_register');
        
        
        //
        // data push code to go here
        // pushing items from the array $edata
        //

        if ($EXT->end_script === TRUE) return;

    }
    // END    

}
?>