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[PLUGIN] Wordpress specific template for first visit (and writes a cookie)

/ Published in: PHP
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  1. <?php
  2. /*
  3. Plugin Name: first-visit-template
  4. Description: Loads a welcome.php template in theme directory if it is the first visit (the function is not lauched if you're logged as admin), and writes a cookie so it's shown only once.
  5. Author: G.Lachance
  6. Author URI: http://tinyurl.com/9wb48o
  7. Credits: Based upon the "Welcome Visitor! Reloaded" plugin from  Alaeddin, which is largely based upon the original Welcome Visitor! plugin by Kaf (http://guff.szub.net/2006/04/12/welcome-visitor/)
  8. which was released under the GNU General Public License.
  9. Version: 1
  10.  
  11. */
  12.  
  13. //for testing your template, uncomment line 30.
  14.  
  15.  
  16. function welcome_visitor_reloaded() {
  17.  
  18. 	if(is_new_visitor()) {
  19. 		$tpl_file = TEMPLATEPATH . '/welcome.php';
  20. 		if ( file_exists($tpl_file) ) {
  21. 			include($tpl_file);
  22. 			exit;
  23. 		}
  24. 	}				
  25. }
  26.  
  27. function is_new_visitor()
  28. {
  29.  
  30. 	//return true; //uncomment this for testing.
  31.  
  32. 	global $visits;
  33.  
  34. 	if (!is_admin())
  35. 	{
  36. 		if (isset($_COOKIE['visits']))
  37. 			$visits = $_COOKIE['visits'] + 1;
  38. 		else
  39. 			$visits = 1;
  40.  
  41. 		$url = parse_url(get_option('home'));
  42. 		setcookie('visits', $visits, time()+60*60*24*365, $url['path'] . '/');
  43. 	}
  44. 	else return false;
  45.  
  46. 	return $visits == 1;
  47. }
  48.  
  49. ///
  50. add_action('template_redirect', 'welcome_visitor_reloaded');
  51.  
  52.  
  53. ?>

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