Edit Auto Meta Keywords and Description WP Plugin - php

Question

i am using a WP plugin to auto generate keywords and description for my site,
it is a single page Plugin, i want to modify it to work as i want, i am pasting whole code of php file:
<?php
/*
Plugin Name: Meta Keywords Generator
Plugin URI: http://home.techphernalia.com/2011/09/meta-keywords-generator/
Description: This plugin helps your SEO by adding meta keywords tag to each page, post, archive (category, tag, date, day and year). Now it also allows you to specify common keywords to be included on every web page. Plugin from one of the best coder Durgesh Chaudhary. For any support just leave your question on our Meta Keywords Generator page.<br/>Please update some settings to get more benefit Update settings
.
Version: 1.10
Author: Durgesh Chaudhary
Author URI: http://home.techphernalia.com/
*/
add_action('admin_menu', 'tp_mkg_add_page');
add_action('admin_init', 'tp_mkg_register');
add_action('wp_head','tp_act');
add_action('rightnow_end','tp_notify');
function tp_mkg_register(){
register_setting( 'tp_mkg_options', 'tp_mkg_options', 'tp_mkg_options_validate' );
add_settings_section('tp_mkg_main_section', 'Quick Settings', 'tp_mkg_section_main_render', 'techphernalia');
add_settings_field('tp_mkg_compulsary', 'Compulsary Keywords', 'tp_mkg_render_fields', 'techphernalia', 'tp_mkg_main_section');
}
function tp_mkg_add_page() {
add_options_page('Meta Keywords Generator', 'Meta Keywords Generator ', 'manage_options', 'techphernalia', 'tp_mkg_render_page');
}
function tp_mkg_render_page() {
echo '<style>#tp_promotion span {display: none;}#tp_promotion a{background: url(http://techphernalia.com/sprite_master.png) left top no-repeat;float: left;width: 32px;height: 32px;margin-right: 10px;}#tp_promotion a.twitter_link{ background-position: left -414px;}#tp_promotion a.facebook_link{background-position: -69px -414px;}</style>';
echo '<div class="wrap">
<center><h2>Meta Keywords Generator Settings</h2></center>
We are working continuously to provide you more SEO benefit and here comes the first in this series which allow you to provide some keywords which you want to be available on each and every web page served to your user. Currently we have only one setting we will have more soon.<br/><br/>Feel free to <b>request features</b> on our blog or on plugin page.
<form action="options.php" method="post">';
settings_fields('tp_mkg_options');
do_settings_sections('techphernalia');
echo '<input name="Submit" class="button-primary" type="submit" value="';
esc_attr_e('Save Changes');
echo'" />
</form></div>';
echo '<br/><br/><div id="tp_promotion"><a target="_blank" href="http://home.techphernalia.com/feed/" title="Subscribe to Our RSS feed" class="rss_link"><span>Subscribe to RSS feed</span></a>
<span>Follow us on Twitter</span><span>Visit us on Facebook</span>
</div>';
}
function tp_mkg_section_main_render() {
echo '<b>Compulsary Keywords</b> : Comma separated keywords which should appear on all the web page displayed.';
}
function tp_mkg_render_fields() {
$options = get_option('tp_mkg_options');
echo "<textarea id='tp_mkg_compulsary' name='tp_mkg_options[tp_mkg_compulsary]' cols='80' rows='10' maxlength='500' style='max-width:660px;max-height:164px;' >{$options['tp_mkg_compulsary']}</textarea>";
}
function tp_mkg_options_validate($input) {
$temp = trim($input['tp_mkg_compulsary']);
$temp = str_replace(";","",$temp);
$newinput['tp_mkg_compulsary'] = trim(str_replace("\"","",$temp));
return $newinput;
}
function tp_notify () {
echo '<p>SEO provided by <strong>Meta Keywords Generator</strong> from techphernalia.com</p>';
}
function tp_parse ($str) {
$str = str_replace("\"","'",$str);
$done = str_replace(", "," ",$str);
$done = str_replace(" ",", ",$done);
if (strpos($str," ")) return $str.", ".$done;
else return $str;
}
function tp_act () {
$name = get_option("blogname");
$desc = get_option("blogdescription");
if (is_tag()) $title = single_tag_title('',false);
if (is_category()) $title = single_cat_title('',false);
if (is_single() || is_page()) {
$add = "";
$postid = get_query_var("p");
$post = get_post($postid);
$title = single_post_title('',false);
$catlist = get_the_category($post->ID);
if (is_array($catlist)) { foreach ($catlist as $catlist) { $add .= ", ".$catlist->name; }}
$taglist = get_the_tags($post->ID);
if (is_array($taglist)) { foreach ($taglist as $taglist) { $add .= ", ".$taglist->name; }}
$description = substr(strip_tags($post->post_content),0,400);
}
$tp_mkg_options=get_option("tp_mkg_options");
echo '<!-- SEO by Meta Keywords Generator : techphernalia.com v1.10 start-->
';
if (!is_home()) {
echo '<meta name="keywords" content="'.tp_parse($title).', '.tp_parse($name).$add.", ".$tp_mkg_options["tp_mkg_compulsary"].'" />
<meta name="description" content="'.str_replace("\"","'",strip_shortcodes( $description )).'" />
';
} else {
echo '<meta name="keywords" content="'.tp_parse($desc).', '.$name.", ".$tp_mkg_options["tp_mkg_compulsary"].'" />
<meta name="description" content="'.str_replace("\"","'",strip_shortcodes( $desc )).'" />
';
}
echo '<!-- SEO by Meta Keywords Generator : techphernalia.com v1.10 end-->
';
}
?>
by default it is showing first 400 characters as description, i want to show Post title at the end and start of description,
any help will be highly appreciated.
Thanks

Answer 1

I am the author of this plugin, you could have asked this on official plugin url mentioned above.
We are generating description at this statement
$description = substr(strip_tags($post->post_content),0,400);
if you want to have site_title at beginning and at end, simply append $title at beginning and end.
$description = $title . substr(strip_tags($post->post_content),0,400) . $title;
but it may exceed 400 characters so you need to manage accordingly.
If you want to remove 400 chars limit remove substr part as
$description = $title . strip_tags($post->post_content) . $title;