need alittle help with the coding... for keyword tagging

quaker · 2009-12-08 20:27:00

This pulls all tag words from the db and displays them in the header of wordpress. I would like to limit and randomize this to a max of 500 words. Since the seo site that I use tells me this.
Each time the page is pulled it changes and displays the tag as keyword in the header for that post.

This tag contains too many characters.
This tag contains 710 characters. This is too many for what we would consider a 'robot friendly' web page. The maximum number of characters we recommend for this tag is 500

<?php global $post;
if( is_single() || is_page() ) :
    $tags = get_the_tags($post->ID);
    if($tags) :
        foreach($tags as $tag) :
            $sep = (empty($keywords)) ? '' : ', ';
            $keywords .= $sep . $tag->name;
        endforeach;
?>
<meta name="keywords" content="<?php echo $keywords; ?>" />
<?php
    endif;
endif;
?>

So, Can someone help me with this?

Q

Franz · 2009-12-08 21:22:02

Not 500 tags, 500 characters

This is rather hack-ish, but it should work. It truncates the tag string at the end and then removes a possibly truncated tag from the end:

<?php global $post;
if( is_single() || is_page() ) :
    $tags = get_the_tags($post->ID);
    if($tags) :
        $keywords = '';
        foreach($tags as $tag) :
            $sep = (empty($keywords)) ? '' : ',';
            $keywords .= $sep . $tag->name;
        endforeach;

        if (strlen($keywords) > 500) :
            $keywords = substr($keywords, 0, 500);
            while (substr($keywords, -1) != ',')
                $keywords = substr($keywords, 0, -1);
            
            // Remove the comma
            $keywords = substr($keywords, 0, -1);
        endif;
?>
<meta name="keywords" content="<?php echo $keywords; ?>" />
<?php
    endif;
endif;
?>

Note: I also removed the space from the comma separating the tags. That should give you a little more room and doesn't matter as far as I know.

Reines · 2009-12-08 21:25:10

Slightly neater version:

<?php

global $post;

define('SEPARATOR', ',');
define('MAX_LENGTH', 500);

if(is_single() || is_page())
{
    $tags = get_the_tags($post->ID);
    if($tags)
    {
        shuffle($tags);    // Randomize the tag order
        reset($tags);    // Reset the array to the beginning (just in-case)

        $keywords = '';
        // while there's something in the array and the length isn't over MAX_LENGTH characters (note: don't count the SEPARATOR since it is removed from the start later)
        while ((list(, $cur_tag) = @each($tags)) !== false && strlen($keywords) + strlen($cur_tag) <= MAX_LENGTH)
            $keywords .= SEPARATOR.htmlspecialchars($cur_tag->name);
        
        // Remove the first SEPARATOR
        $keywords = substr($keywords, strlen(SEPARATOR));

?>
<meta name="keywords" content="<?php echo $keywords; ?>" />
<?php

    }
}

Franz · 2009-12-08 21:32:05

Reines wrote:

Slightly neater version

Use that one

Forums

#1 2009-12-08 20:27:00

need alittle help with the coding... for keyword tagging

#2 2009-12-08 21:22:02

Re: need alittle help with the coding... for keyword tagging

#3 2009-12-08 21:25:10

Re: need alittle help with the coding... for keyword tagging

#4 2009-12-08 21:32:05

Re: need alittle help with the coding... for keyword tagging

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