Hax

modifing your files on your server should not affect your database at all your just changing the application not the data. but you can always login into your phpMyAdmin and do an export of your database to be sure but just be sure not to modify your content folder unless you need to update any plug in that is not compatible with your new installation of wordpress

Try pass your arguments to the new WP_Query object like this WP_Query(array('posts_per_page' => 300 )) don’t call your variable $query use something like $current_posts because your probably overwriting the global $query; also I don;t think you need to destroy the old query wp_reset_query(); because your using a new object not the default you destroy the query when your using ‘query_posts(‘showposts=5′)’ because this overwrites the original query so basically your killing the original query

Hope this helps

if you already read the plugin api section here are a fiew hooks that you can try

add_filters('sidebars_widgets', "your_function_name_here");
add_action( 'widgets_init', "your_function_name_here" );

and all the functions and filters related to widgets are in “wp-includes/widgets.php”

you can always hard code this url into your theme but you may have issues updating your plugin

what option are you trying to save and if you using the add_option() function “0” returns a false so it thinks that there is no data. you can’t try to add or change the value to “none” or something like that or sent the value in an add_option(array('0')); this will serialize your data.

This should work.

Add this code to your function.php in your theme’s folder

## remove version from css and js for proper caching
function _remove_script_version( $src ){
	$parts = explode( '?', $src );
	return $parts[0];
}
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );

here is the code to add admin menus

<?php
add_action('admin_menu', 'my_plugin_menu');
function my_plugin_menu() {
  add_options_page('My Plugin Options', 'My Plugin', 'manage_options', 'my-unique-identifier', 'my_plugin_options');
}

function my_plugin_options() {
  if (!current_user_can('manage_options'))  {
    wp_die( __('You do not have sufficient permissions to access this page.') );
  }

  echo '<div class="wrap">';
  echo '<p>Here is where the form would go if I actually had options.</p>';
  echo '</div>';

}
?>

is the documentation page http://codex.wordpress.org/Adding_Administration_Menus

another option that you have is installing a roles plugin add new roles and change the permission base on what you want them to do.

is the one that I like http://www.im-web-gefunden.de/wordpress-plugins/role-manager/