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<?php
/*
Plugin Name: Auto Keywords and Description Generator
Plugin URI: http://michael.chanceyjr.com/free-stuff/auto-keywords-and-description-generator/
Description: Auto create Keywords and description meta tags from blog post information
Version: 1.3.2
Author: Michael E. Chancey Jr.
Author URI: http://michael.chanceyjr.com
*/
function generateMetaTags()
{
global $post;
$author = get_userdata($post->post_author)->display_name;
$keywords = "";
$description = "";
//DETERMINE WHERE TO LOAD THE INFORMATION FROM
if(is_home() || is_front_page())
{
//LOAD KEYWORDS FROM USER SPECIFIED STRING
$keywords = get_option("metakeywords");
//LOAD DESCRIPTION FROM BLOGINFO
$description = get_option("metadescription");
}
elseif(is_page() && !is_home() && !is_front_page())
{
//PULL THE VALUES FROM THE SAVED SETTINGS IN THE DATABASE
$tmpPage = get_page(get_the_ID());
$keywords = get_option($tmpPage->ID . "_keywords");
$description = get_option($tmpPage->ID . "_description");
}
elseif(is_single())
{
//LOAD POST TITLE AS DESCRIPTION
$description = $post->post_title;
//BUILD LIST OF KEYWORDS FROM TAGS
$tags = wp_get_post_tags($post->ID);
foreach($tags as $tag)
{
//ONLY ADD THE COMMA IF THERE ARE OTHER KEYWORDS IN FRONT OF THIS ONE
if($keywords != "" && $keywords != NULL)
$keywords = $keywords . ", ";
//APPEND THE TAG AS A KEYWORD
$keywords = $keywords . $tag->name;
}
}
elseif(is_category())
{
//LOAD CATEGORY DESCRIPTION
$tmpCategory = get_the_category();
$keywords = single_cat_title('', false);
$description = $tmpCategory[0]->category_description;
}
//PRINT THE VALUES TO THE HEADER SECTION
echo "<!--Auto Keywords Generator -->\n";
//IF THE USER WANTS THE AUTHOR SHOWN THEN DISPLAY THIS INFORMATION
if(get_option("metashowauthor") && $author != "")
echo "<meta name=\"author\" content=\"" . $author . "\" />\n";
//CONTINUE TO PRINT THE REST OF THE META INFORMATION
echo "<meta name=\"keywords\" content=\"" . str_replace("\'", "'", $keywords) . "\" />\n";
echo "<meta name=\"description\" content=\"" . str_replace("\'", "'", $description) . "\" />\n";
echo "<!--Auto Keywords Generator -->\n";
}
function metatagsAdminMenu()
{
//ADD THE HANDLER FOR THE OPTIONS SCREEN
add_options_page("Auto Keywords and Description Tags Generator Options", "Keywords and Description", "administrator", "metaOptions", "metatagsOptionsPage");
}
function metatagsOptionsPage()
{
//USE THE VALUES FROM THE DATABASE INCASE THERE IS NOTHING BEING PASSED IN FROM THE POST
$keywordValue = get_option("metakeywords");
$descValue = get_option("metadescription");
$showauthor = get_option("metashowauthor");
//IF THE USER CLICKED THE SUBMIT BUTTON THEN SAVE THE SETTINGS
if($_POST["hidSubmit"] == 'Y')
{
$keywordValue = $_POST["default_keywords"];
$descValue = $_POST["default_description"];
$showauthor = $_POST["chkshowauthor"];
//UPDATE THE STATIC PAGE OPTIONS FROM WHAT THE USER SUBMITTED
foreach(get_pages() as $tmpPage)
{
update_option($tmpPage->ID . "_keywords", $_POST[$tmpPage->ID . "_keywords"]);
update_option($tmpPage->ID . "_description", $_POST[$tmpPage->ID . "_description"]);
}
//UPDATE THE DEFAULT VALUES
update_option("metakeywords", $keywordValue);
update_option("metadescription", $descValue);
update_option("metashowauthor", $showauthor);
//LET THE USER KNOW THE VALUES HAVE BEEN SAVED
echo "<div class=\"updated\"><p><strong>Your changes have been saved</strong></p></div>\n";
}
//SETUP CHECK STATE FOR CHECK BOXES
if($showauthor == "1")
$authorChecked = "checked";
//PRINT OUT JAVASCRIPT FOR HIDING AND SHOWING DIVS
echo "<script type=\"text/javascript\">\n";
echo "<!--\n";
echo " function toggleVisibility(id) {\n";
echo " var e = document.getElementById(id);\n";
echo " if(e.style.display == \"block\")\n";
echo " e.style.display = \"none\";\n";
echo " else\n";
echo " e.style.display = \"block\";\n";
echo " }\n";
echo "-->\n";
echo "</script>";
echo "<div class=\"wrap\">";
echo " <h3>Auto Meta Tags Generator Options</h3>";
echo " <form name=\"form1\" method=\"post\" action=\"\">";
echo " <input type=\"hidden\" name=\"hidSubmit\" value=\"Y\" />";
echo " <h3>Basic Information</h3>This sections handles the display options as well as the default information for your homepage.<hr/>";
//OUTPUT DISPLAY OPTIONS
echo " <div id=\"poststuff\" class=\"metabox-holder\">";
echo " <div id=\"normal-sortables\" class=\"meta-box-sortables\">";
echo " <div class=\"postbox \">";
echo " <div class=\"handlediv\">";
echo " <br/>";
echo " </div>";
echo " <h3 class=\"hndle\" title=\"Click to toggle\"><span>Display Options</span></h3>";
echo " <div class=\"inside\" style=\"display:block;\">";
echo " <p>Display Author Name: <input type=\"checkbox\" name=\"chkshowauthor\" value=\"1\" " . $authorChecked . " /></p>";
echo " </div>";
echo " </div>";
echo " </div>";
echo " </div>";
//OUTPUT HOMEPAGE INFORMATION
echo " <div id=\"poststuff\" class=\"metabox-holder\">";
echo " <div id=\"normal-sortables\" class=\"meta-box-sortables\">";
echo " <div class=\"postbox \">";
echo " <div class=\"handlediv\">";
echo " <br/>";
echo " </div>";
echo " <h3 class=\"hndle\" title=\"Click to toggle\"><span>Homepage Information</span></h3>";
echo " <div class=\"inside\" style=\"display:block;\">";
echo " <p>Homepage Keywords seperated by commas:<br/><textarea name=\"default_keywords\" style=\"width: 100%; height: 100px;\">" . $keywordValue . "</textarea></p>";
echo " <p>Homepage Description:<br/><textarea name=\"default_description\" style=\"width: 100%; height: 100px;\">" . $descValue . "</textarea></p>";
echo " </div>";
echo " </div>";
echo " </div>";
echo " </div>";
//OUTPUT STATIC PAGES
echo " <h3>Static Page Keywords and Descriptions</h3>Please note that if you use a static page as your home page the above keywords and description will override what you place below.<hr/>";
foreach(get_pages('sort_column=post_title') as $tmpPage)
{
echo "<div id=\"poststuff\" class=\"metabox-holder\" style=\"width: 500px;\">";
echo " <div id=\"normal-sortables\" class=\"meta-box-sortables\">";
echo " <div class=\"postbox \">";
echo " <div class=\"handlediv\" title=\"Click to toggle\" onclick=\"toggleVisibility('div" . $tmpPage->ID . "');\">";
echo " <br/>";
echo " </div>";
echo " <h3 class=\"hndle\" title=\"Click to toggle\" onclick=\"toggleVisibility('div" . $tmpPage->ID . "');\"><span>" . $tmpPage->post_title . "</span></h3>";
echo " <div id=\"div" . $tmpPage->ID . "\" class=\"inside\" style=\"display:none;\">";
echo " <p>Keywords seperated by commas:<br/><textarea name=\"" . $tmpPage->ID ."_keywords\" style=\"width: 100%; height: 100px;\">" . str_replace("\'", "'", get_option($tmpPage->ID . "_keywords")) . "</textarea></p>";
echo " <p>Description:<br/><textarea name=\"" . $tmpPage->ID . "_description\" style=\"width: 100%; height: 100px;\">" . str_replace("\'", "'", get_option($tmpPage->ID . "_description")) . "</textarea></p>";
echo " </div>";
echo " </div>";
echo " </div>";
echo "</div>";
}
//OUTPUT CLOSING AND SUBMIT BUTTON
echo " <p class=\"submit\">";
echo " <input type=\"submit\" name=\"Submit\" value=\"Update Options\"/>";
echo " </p>";
echo " </form>";
echo "</div>";
}
//ADD THE TWO DEFAULT OPTIONS WITH BLANK VALUES
add_option("metakeywords", "");
add_option("metadescription", "");
//REGISTER ADMIN MENU OPTION
add_action("admin_menu", "metatagsAdminMenu");
//REGISTER WORDPRESS_HEAD HOOK
add_action("wp_head", "generateMetaTags");
?>
