How to integrate WordPress template with CodeIgniter

Question

How can CodeIgniter and WordPress be integrated such that the look and feel/template of the WordPress blog is carried over to the CodeIgniter-created pages?

Answer 1

Here is another way to use WordPress templates in your codeigniter project. This works better for me so I wanted to share it. Tested with WordPress 3.3.1 and Codeigniter 2.1.

Directory Structure:

/ - WordPress
/ci/ - codeigniter

/ci/index.php (Top of CI Index file)

$wp_did_header = true;

if ( defined('E_RECOVERABLE_ERROR') )
    error_reporting(E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR |   E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR);
else
    error_reporting(E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING);

require_once("../wp-config.php");

Deal with the site_url function collision by overriding the default codeigniter version. You will need to change any place you used site_url() in codeigniter to use ci_site_url() instead.

/ci/application/helpers/MY_url_helper.php

'.$title.'';
}


if ( ! function_exists('ci_site_url'))
{
    function ci_site_url($uri = '')
    {
        $CI =& get_instance();
        return $CI->config->site_url($uri);
    }
}

function current_url()
{
    $CI =& get_instance();
    return $CI->config->ci_site_url($CI->uri->uri_string());
}


function anchor_popup($uri = '', $title = '', $attributes = FALSE)
{
    $title = (string) $title;

    $site_url = ( ! preg_match('!^\w+://! i', $uri)) ? ci_site_url($uri) : $uri;

    if ($title == '')
    {
        $title = $site_url;
    }

    if ($attributes === FALSE)
    {
        return "".$title."";
    }

    if ( ! is_array($attributes))
    {
        $attributes = array();
    }

    foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
    {
        $atts[$key] = ( ! isset($attributes[$key])) ? $val : $attributes[$key];
        unset($attributes[$key]);
    }

    if ($attributes != '')
    {
        $attributes = _parse_attributes($attributes);
    }

    return "".$title."";
}



function redirect($uri = '', $method = 'location', $http_response_code = 302)
{
    if ( ! preg_match('#^https?://#i', $uri))
    {
        $uri = ci_site_url($uri);
    }

    switch($method)
    {
        case 'refresh'  : header("Refresh:0;url=".$uri);
            break;
        default         : header("Location: ".$uri, TRUE, $http_response_code);
            break;
    }
    exit;
}

You can now use the WordPress get_header() and/or get_footer() functions to draw the template in your CI project.