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[sticky] [closed] WordPress Tips (241 posts)
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About This Topic
Posted 3 years ago
By milo
Latest reply from milo- This topic is
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-
Allow shortcodes in sidebar widgets, simply edit the functions.php file from your them and add the following code:
add_filter('widget_text', 'do_shortcode');
Once you saved the file, you can now add as many shortcodes as you want in sidebar widgets.
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Simply paste the following code on the functions.php file from your theme. Create that file if it doesn’t exists by default.
function insertRss($content) { if(is_feed()){ $content = 'text before content'.$content.'
< a href = "//3oneseven.com"">Did you visited milo317 today?</ a >'; } return $content; } add_filter('the_content', 'insertRss'); -
To get a permalink outside of the loop, you have to use the get_permalink() function. That function takes a single argument, which is the ID of the post you’d like to get the permalink:
< a href ="<?php echo get_permalink(10); ?>" >Read the article< /a >
You can also use this function with the $post global variable:
< a href = "<?php echo get_permalink($post->ID); ?>" >Read the article< /a >
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Display the total number of trackbacks
, first create a function. Paste the following code on the functions.php file from your theme:function tb_count() {
global $wpdb;
$count = "SELECT COUNT(*) FROM $wpdb->comments WHERE comment_type = 'pingback' OR comment_type = 'trackback'";
echo $wpdb->get_var($count);
}Once the file is saved, you can call the function anywhere you want:
<?php tb_count(); ?>
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Automatically remove code mistakes in posts
create the function which will takes your post content, clean it and print or return it.
Copy the code below to the functions.php file from your theme. Create that file if it doesn’t exists.function clean_bad_content( $bPrint = false ){
global $post;
$szPostContent = $post->post_content;
$szRemoveFilter = array( "~<p[^>]*>\s?</p>~", "~<a[^>]*>\s?~", "~<font[^>]*>~", "~<\/font>~", "~style\=\"[^\"]*\"~", "~<span[^>]*>\s?</span>~" );
$szPostContent = preg_replace( $szRemoveFilter, '' , $szPostContent);
$szPostContent = apply_filters('the_content', $szPostContent);
if ( $bPrint == false ) return $szPostContent; else echo $szPostContent;
}Proceed as the following to display your clean post content:
<?php if ( function_exists( 'clean_bad_content' ) ) clean_bad_content( true ); ?>
The clean_bad_content() only takes one argument, a boolean to specify if you’d like to print the result (true) , or get it for further use in php (false).
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New posts stands out
Edit your index.php file and look for the loop. Replace it with that one:
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
$currentdate = date('Y-m-d',mktime(0,0,0,date('m'),date('d'),date('Y')));
$postdate = get_the_time('Y-m-d');
if ($postdate==$currentdate) {
echo '<div class="post new">';
} else {
echo '<div class="post">';
} ?>
< a href ="<?php the_permalink() ?>" rel="bookmark">
<?php the_title(); ?>< /a >
<?php the_time('j F Y'); ?>
</div>
<?php endwhile; ?>
<?php endif; ?>The above code will add the css class new if the post was published less than 24 hours ago. Then, you just have to modify your stylesheet a bit:
.post{
/* CSS style for "normal" posts */
}.post.new {
/* CSS style for newer posts */
} -
Integrate files on your blog header
Create a function that will simply print the required files. Then, you got to hook it to the wp_head() WordPress function, by using the add_action() function.
function GetLastPostName_head()
{
echo '<script type="text/javascript" src="'.get_settings('siteurl').'/wp-content/plugins/slidelastposttitle/mootools.js"></script>';
echo '<script type="text/javascript" src="'.get_settings('siteurl').'/wp-content/plugins/slidelastposttitle/blackbox.js"></script>';
}
add_action('wp_head', 'GetLastPostName_head'); -
Access post data outside the loop
paste the following function on the functions.php file from your theme.
This function takes a singles argument, which is the ID of the post you’d like to access data. It will return an array, containing post title, date, content, author id, post id, etc.function get_post_data($postId) {
global $wpdb;
return $wpdb->get_results("SELECT * FROM $wpdb->posts WHERE ID=$postId");
}To use the function, use the following anywhere on your theme files:
<?php
$data = get_post_data(10);
echo $data[0]->post_title; //Print post title
echo $data[0]->post_date; //Print post date
echo $data[0]->comment_count; //Print number of comments
echo $data[0]->post_content; /Print post content
?> -
To be able to use html in user profiles, simply append the following line of code to the functions.php file from your theme. (Create that file if it doesn’t exists)
remove_filter('pre_user_description', 'wp_filter_kses');
-
Get the value of a custom field
paste it on your theme functions.php file. If your theme doesn’t have a file named functions.php, create one.
function get_custom_field_value($szKey, $bPrint = false) {
global $post;
$szValue = get_post_meta($post->ID, $szKey, true);
if ( $bPrint == false ) return $szValue; else echo $szValue;
}Now, to call the function and get your custom field value, use the following code:
<?php if ( function_exists('get_custom_field_value') ){
get_custom_field_value('featured_image', true);
} ?>First, we use the php function_exists() function to make sure the get_custom_field_value function is defined on our theme. If it is, we use it. The first argument is the custom field name (here, featured_image) and the second let you echo the value (true) or get it for further use in php (false).
-
Create a meta description function for your WordPress site
Open your header.php file. Paste the following code anywhere within the <head> and </head> tags:
<meta name="description" content="
<?php if ( (is_home()) || (is_front_page()) ) {
echo ('Your main description goes here');
} elseif(is_category()) {
echo category_description();
} elseif(is_tag()) {
echo '-tag archive page for this blog' . single_tag_title();
} elseif(is_month()) {
echo 'archive page for this blog' . the_time('F, Y');
} else {
echo get_post_meta($post->ID, "Metadescription", true);
}?>"> -
Display how many times a post has been saved to Delicious
To get your Delicious save count in plain text, simply open the single.php file from your theme and paste the following code where you’d like the count to be displayed.
Delicous.com saves: <span id='del'>0</span>
<script type='text/javascript'>
function displayURL(data) {
var urlinfo = data[0];
if (!urlinfo.total_posts) return;
document.getElementById("del").innerHTML = urlinfo.total_posts;
}
</script><script src='http://badges.del.icio.us/feeds/json/url/data?url=<?php the_permalink() ?>&callback=displayURL'></script>
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Hide WordPress version
open the functions.php file from your theme and add the following line of code:
remove_action('wp_head', 'wp_generator');
-
Display only one sticky post on your homepage
Open your index.php file, and replace your current loop by this one (replacing the stickies category name by the category of your choice) by :
<?php if (have_posts()) :
$my_query = new WP_Query('category_name=stickies&showposts=1');
while ($my_query->have_posts()) : $my_query->the_post(); ?> -
List WordPress category feeds
paste the following code anywhere on your theme. It will output a list of your categories with a link to the category rss feed.
<?php wp_list_categories('feed_image=http://www.myblog.com/image.gif&feed=XML Feed&optioncount=1&children=0'); ?>
The two parameters used here are:
* feed_image: The url of the image to display as a link to your feed.
* feed: The feed format -
List recent post on a non-WordPress site
Simply paste the following code on your non WordPress site. You may need to upload the wp-config file from the blog you want to get the posts on the same directory.
<?php
$how_many=1; //how many posts to display
require('blog1/wp-config.php'); //the path to the wp-config file of the blog I want to use
$news=$wpdb->get_results("SELECT 'ID','post_title','post_content' FROM $wpdb->posts
WHERE 'post_type'=\"post\" AND 'post_status'=\"publish\" ORDER BY post_date DESC LIMIT $how_many");foreach($news as $np){
printf ("<div class='normalText'>%s</div>", $np->post_content);
}?> -
Display adsense to search engines visitors only
paste the code below in your theme functions.php file. Create that file if it doesn’t exists.
function scratch99_fromasearchengine(){
$ref = $_SERVER['HTTP_REFERER'];
$SE = array('/search?', 'images.google.', 'web.info.com', 'search.', 'del.icio.us/search', 'soso.com', '/search/', '.yahoo.');
foreach ($SE as $source) {
if (strpos($ref,$source)!==false) return true;
}
return false;
}The $SE array is where you specify search engines. You can easily ad new search engines by adding new elements to the array.
Then, paste the following code anywhere on your template where you want your adsense ads to appear. They’ll be displayed only to visitors comming from search engines results.
if (function_exists('scratch99_fromasearchengine')) {
if (scratch99_fromasearchengine()) {
INSERT YOUR CODE HERE
}
} -
Display a “welcome back” message to your visitors
paste the following code wherever you want on your template.
<?php
if(isset($_COOKIE['comment_author_'.COOKIEHASH])) {
$lastCommenter = $_COOKIE['comment_author_'.COOKIEHASH];
echo "Welcome Back ". $lastCommenter ."!";
} else {
echo "Welcome, Guest!";
}
?> -
List latest registered users
paste the following code anywhere on your template. It will list your 5 latest registered users. If you want to get more or less users, simply change the 5 in the SQL query.
<h2>Latest registered users</h2>
< ul >
<?php
$usernames = $wpdb->get_results("SELECT user_nicename, user_url FROM $wpdb->users ORDER BY ID DESC LIMIT 5");foreach ($usernames as $username) {
echo '< li >< a href ="'.$username->user_url.'">'.$username->user_nicename."</ a >< /li >";
}
?>
< /ul > -
Create a “Save to Delicious” button
Paste the following code within the loop, on your single.php file.
< a href = "http://del.icio.us/post?url=<?php the_permalink();?>">Save this link to Delicious< /a >
-
Get posts published exactly one year ago
simply paste the following code where you want posts published exactly one year ago to appear.
<?php
$current_day = date('j');
$last_year = date(‘Y’)-1;
query_posts('day='.$current_day.'&year='.$last_year);
if (have_posts()):
while (have_posts()) : the_post();
the_title();
the_excerpt();
endwhile;
endif;
?> -
List scheduled posts
paste the following code anywhere on your template where you want your scheduled posts to be listed. You can change the max number or displayed posts by changing the value of showposts in the query.
<?php
$my_query = new WP_Query('post_status=future&order=DESC&showposts=5');
if ($my_query->have_posts()) {
while ($my_query->have_posts()) : $my_query->the_post();
$do_not_duplicate = $post->ID; ?>- <?php the_title(); ?>
<?php endwhile;
}
?> -
display private posts to logged users in the loop
define a custom field named private, with true as a value, to each private post will have.
Replace your current WordPress loop with that one:
<?php
if (have_posts()) :
while (have_posts()) : the_post();
$private = get_post_custom_values("private");
if ( isset($private[0]) && $private == "true" ) {
if (is_user_logged_in()) {
// Display private post to logged user
}
} else {
//Display public post to everyone
}
endwhile;
endif; ?> -
Display recently updated posts and pages
Paste this code anywhere you’d like to display a list of recently updated posts and pages. You can specify how much item to show by editing the value of the $howMany variable.
<?php
$today = current_time('mysql', 1);
$howMany = 5; //Number of posts you want to display
if ( $recentposts = $wpdb->get_results("SELECT ID, post_title FROM $wpdb->posts WHERE post_status = 'publish' AND post_modified_gmt < '$today' ORDER BY post_modified_gmt DESC LIMIT $howMany")):
?><h2><?php _e("Recent Updates"); ?></h2>
< ul >
<?php
foreach ($recentposts as $post) {
if ($post->post_title == '') $post->post_title = sprintf(__('Post #%s'), $post->ID);
echo "< li >< a href= '".get_permalink($post->ID)."'>";
the_title();
echo '< /a >< /li >';
}
?>
</ ul >
<?php endif; ?>
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