A simple PHP function to remove duplicate UTF-8 meta tag for Drupal Generated Page.
July 31st, 2009 | 
danreb I was converting an existing XHTML page to Drupal CMS themes when I noticed that there was a duplicate output for UTF-8 meta tag that was generated by Drupal. This was not a big issue but for me it was so ugly and I don't want this meta duplication. At first I thought of it as a bug but when I search for this duplicate UTF-8 meta tag seem's it was intentionaly inserted by Drupal developer for security reasons and for the sake of all un-updated Drupal themes.
Here's what the ugly generated UTF-8 code look like in my XHTML page:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="shortcut icon" href="/misc/favicon.ico" type="image/x-icon" />Looking for the best way to avoid this duplicate meta tag that was generated by Drupal, I found this PHP code snippet that can be easily inserted to your template.php file and viola, UTF-8 meta duplication is gone.
and here's the code that you need to insert to your template.php file:
<?php
function THEME_NAME_preprocess_page(&$vars) { //remove duplicate utf-8 meta
$vars['head'] = preg_replace('/<meta http-equiv=\"Content-Type\"[^>]*>/', '',
$vars['head']);
}
?>
Please note that if your theme doesn't have a template.php file you must create it first and then insert the snippet code above, you need also to change the THEME_NAME in the PHP function name with the name of your theme. Here's an example equivalent code when I inserted it to my template.php file:
<?php // $Id
function danreb_preprocess_page(&$vars) { //remove duplicate utf-8 meta
$vars['head'] = preg_replace('/<meta http-equiv=\"Content-Type\"[^>]*>/', '',
$vars['head']);
?>
I replace THEME_NAME with the name of my theme and inserted it at the second line of my template.php file.
Source : http://drupal.org/node/451304
Drupal Themes Variable snapshot :
<?php print $head_title ?> // must be inserted inside the
title tag <title>here</title>
<?php print $head ?> // insert right after the title tag -
responsible for some code needed inside
the head like the link for favicon
<?php print $styles ?> // code that insert all the stylesheets,
insert after the print $head
<?php print $scripts ?> // code that insert all the javascripts ,
insert it after the $styles
That's it for now, more themes variable snapshot soon.....
