The wpdb class, accessed via the $wpdb global variable, is used to interact with the WordPress database

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adding a log row log table, when the draft post publish

i wrote some codes, about wpdb update query. but update_post meta works fine but, wpdb update query doesn't. where am i wrong ? here is the code ; add_action('publish_post', ...
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1answer
548 views

MySQL LIKE not working

It seems MySQL's LIKE operator behaves like a = operator. The following MySQL query returns the expected result (1 entry): $meta_key = '_locality'; $meta_value = 'The Hague'; $post_ids = ...
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1answer
175 views

plugin ajax to external php file always return null

I am struggling with this error for a while now. The plugin inserts data to the table. Here's the code : File : plugin/_add.php require_once('../../../wp-load.php'); global $wpdb; $table_name = ...
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0answers
21 views

Output terms based on custom fields

This question is rather specific. In my custom posttype "sak", I have a taxonomy called "vvpl". This taxonomy has a custom field called "revision" because a term have copies based on how many ...
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2answers
430 views

Object method calling for global $wpdb in header.php

I am developing a Wordpress plugin in an object oriented way, and I would like to read data from the wordpress database using the global $wpdb variable. The global $wpdb variable is called from ...
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18 views

Separate Register Login

I plan to create a bespoke login and register feature on my WordPress Frontend. These users won't have access to the backend of WP. Just to a frontend area. Should i store the information submitted ...
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1answer
33 views

Update vs Insert logic but the last key is always inserted?

I have added a custom db table which looks like usermeta table, just storing some key - value pairs. But now i am stuck with the following logic a/ if key exist for a user use an update query else ...
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3answers
367 views

How to display a specific category using a custom Query?

Hi I want to display a specific category from a custom query in WordPress. My code works fine and it gets the latest 4 posts, but what I want now is to retrieve a specific category. My code is below ...
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2answers
109 views

$wpdb->get_var multiple queries in one database check

I am using the $wpdb->get_var php code to get the first name and last name on the records, in the wp_usermeta table... But because the field value is stored in the same cell, I don't know how to merge ...
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2answers
1k views

How To Get Some Data From WordPress Database Using WordPress $wpdb Query?

I am trying to get some data from WordPress database tables in a plugin. For that, I am using the below code... global $wpdb; $findID = $wpdb->get_var("SELECT ID FROM wp_posts WHERE post_name = ...
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2answers
1k views

Call to a member function get_results() on a non-object in wordpress plugin

I am using revolution slider plugin. I got above error while executing one of my front end form. This is my code in that file.. <?php class UniteDBRev{ private $wpdb; private $lastRowID; ...
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835 views

$wpdb->get_results(…) returns empty array despite correct query

As title implies, I cannot seem to get $wpdb->get_results to give results. Running the "raw" query is successful, but this seems to be failing for some strange unknown reason. global $wpdb; ...
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477 views

What is _transient_random_seed for?

This is a very short question. _transient_random_seed is in wp_options. What is it for?
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1answer
79 views

How can I retrieve data from alternate database using wpdb class?

I'm attempting to retrieve data from a separate WordPress installation on the same server. I'm able to use the wpdb class to successfully connect to the alternate database and get results, however, I ...
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1answer
47 views

How to avoid conflicts with db.php / $wpdb and other plugins that decide to use them?

Our plugin (VersionPress) needs to track database changes so that it can version-control them. We currently do this by creating db.php and overriding the $wpdb instance in it but it has an issue that ...
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36 views

Issue On WordPress multisite its create new table for each user

I am using WordPress for multisite all configuration are right, but it's create new table for each user like (wp_1_options, wp_2_options, wp_3_options etc for each table) it's a very big issue for me. ...
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1answer
55 views

Multi-site site nav, wpdb->prepare missing argument

I'm using a Wordpress Multi-site to house a number of sites in one WP install I'd like to have a nav showing each site with a link to the site. I'm using this function to do this <?php ...
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1answer
157 views

Wordpress SQL query - returning 'true' 'false' or 'null'

I am working on coding a PHP form for my website that requires the user to enter a code before the form becomes active. I have a field called "used" that I set up as a Boolean/TinyInt which I thought ...
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0answers
42 views

How to make iteration on wpdb->update or query statement?

I want to change post_names with iteration; I have similar post names and want to change them by foreach iteration. Initial post name is "one-book" and there are 30 similar names. I want to change ...
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1answer
83 views

Exclude specific terms from all queries using posts_where or something similar

Basically what I'm trying to do is exclude all posts that belong to a specific set of terms from showing in any and all queries across the board, EXCEPT when you're actually viewing that post or page. ...
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1answer
121 views

Advanced SELECT query with condtional statements

I am having trouble understanding the proper way to write an advanced select query. I have the following the code here. if (!empty($_GET['3321body_type'])) { $bt = $_GET['3321body_type']; ...
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1answer
28 views

At what point during a typical request does the $wpdb object become available?

I've wrote some custom SQL queries inside a class method and noticed they seem to work if I hook the method to the wp action. If I hook to the plugins_loaded action, they don't seem to work. My ...
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47 views

Codex: Database Description: meaning of Cardinality

The following post outlines how to word cardinality is commonly used when dealing with databases: http://stackoverflow.com/questions/10621077/what-is-cardinality-in-databases. However I have not been ...
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1answer
22 views

wp_commentdata: error in documentation?

The page http://codex.wordpress.org/Database_Description#Table:_wp_commentmeta lists the meta_id field of the wp_commentdata table as being both PRIMARY KEY and DEFAULT NULL. But a primary key cannot ...
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1answer
313 views

WP_USE_EXT_MYSQL

Here is the constructor for the wpdb class as found in the source code. According to a google search this has been recently renamed from USE_EXT_MYSQL. However I cannot find anywhere in the source ...
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1answer
23 views

wpquery properties last_query and last_result : should these be public or private?

I've come across the following lines of code in wp-includes/wp-db.php: /** * Last query made * * @since 0.71 * @access private * @var array */ var $last_query; /** * Results of the last query ...
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2answers
537 views

wp-content/db.php : where is this file?

At the top of the source file wp-includes/wp-db.php I can find the following comment: /** * WordPress Database Access Abstraction Object * * It is possible to replace this class with your own * ...
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100 views

Error establishing database connection on app engine

Error establishing database connection on app engine after deploying wordpress. I got an error Notice: Undefined property: batcache::$query in ...
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1answer
70 views

Display future posts in archive

I'm using the following code to display an archive of posts. <?php // Get years that have posts $years = $wpdb->get_results( "SELECT YEAR(post_date) AS year FROM wp_posts WHERE post_type = ...
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148 views

wpdb custom tables without plugin

I am using custom tables, with $wpdb, trying to perform basic queries at the moment. I can't find anything on manually creating tables then using them with $wpdb, everything is plugin related. I ...
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1answer
89 views

Ascending order of yearly archives [closed]

Hey there, I stumbled upon this question but I can't seem to contact the author, because I'm still too new here. I'm using this snippet on my archives.php page to display my posts sorted by years. ...
0
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1answer
29 views

Using $wpdb in a plugin, what sort of data does it return?

I have following code: <?php $q = intval($_GET['q']); global $wpdb; $myoption = get_option( 'fixformdata_options' ); $myoptionValue = maybe_unserialize( $myoption ); $result2 = ...
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46 views

WordPress database error on a query working fine in MySQL Workbench

On activating my plugin Wordpress adds an entry to the error log... WordPress database error for query SELECT * FROM wp_c2pprojects WHERE projectid = 20 made by ...
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228 views

Add delete/edit button to each row in an SQL table (Wordpress Backend)

I have a form that is submitting entries to a table in the backend of my Wordpress installation. I would like to add edit/delete buttons to each row so that an administrator can delete submissions or ...
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33 views

Returning error with WP Insert without getting an error in error log

I'm checking if a key exists in my database using $wp_db->insert() and am executing code based on the result. I know that if a row already exists it will return false and I want to use that to execute ...
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1answer
234 views

Can't update multiple rows with $wpdb query

it seems that I cannot update multiple rows to change the post_type of posts having a specific tag. I follow different method, even if it seems the good one is this one : global $wpdb; $result = ...
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2answers
103 views

What's wrong with my $wpdb prepare

I can't get my head around this. I get this error: Parse error: syntax error, unexpected '"' in 224. The line is this between foreach $html: $html = ''; foreach ( $recent_across_network as $post ...
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1answer
282 views

Can I use $wpdb for my custom tables in the WordPress database?

I am building a custom application based on WordPress. I have my custom tables in the WP database. Can I use $wpdb to work with them, or is that class solely for the WP related tables? For example, ...
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1answer
158 views

foreach loop inside the loop creating duplicates in output

I have a foreach loop inside the loop that is getting info from a separate table. The table has a column that has an id that reflects the id of the post type so it should always be unique. When I ...
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0answers
25 views

How to operate two wordpress databases simulataneously?

I am having a situation, where i have two wordpress sites. One is for saving the data and content and other is for showing the data/content. Now the situation is, i want a user to register on one ...
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0answers
29 views

How To Structure A Wordpress Database Query?

I have an array containing the IDs of the rows I want to update: $matches = array('abc123', 'def456', 'ghi789'); Rows with those IDs must be updated so that their 'confirmed' value is changed from ...
2
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1answer
1k views

$wpdb->update multiple rows, like IN in normal SQL

I was wondering if it is possible to use $wpdb->update to update values for multiple rows like with IN in "normal" SQL. I want to accomplish something like this example; UPDATE [table] SET [column_1] ...
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1answer
83 views

wpdb getting avatars and author url

Running an SQL query to pull authors by votes they've received on posts. @bonger helped me out on my first post and helped me get this working great, but I created this new question since it's a ...
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3answers
484 views

Insert custom postmeta when custom post type published

I'm trying to populate the postmeta table with a custom value when a custom type ('my-solutions') is published. I've read a few threads, the Codex and Pippin's blog on this matter and tried many ...
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1answer
282 views

$wpdb select date range of posts

0 down vote favorite Using this SQL query to sort users by how many votes(meta key) their posts have received. <?php global $wpdb; $results = ...
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1answer
96 views

Can't get result from sql using ajax result

I'm using an AJAX form to feed the code something to lookup in db. Separate table, not WP options. I'm getting the result from AJAX, but when I try to do the sql it just returns 0. This is the ...
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1answer
112 views

Save/retrieve form data best practises for theme development

I'm building a theme and I have a custom page template with a <form> which is for the vistors to fill in and submit. I'm processing the data with help from hooks and this is all separated from ...
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115 views

Fire query on ajax post url page

Here i am sending the ajax response to load_post.php page from my ajax call.I am getting response on load_post.php on load_post.php i have to fire word press query. I was try this but getting bellow ...
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2answers
690 views

Wordpress insert NOW() in TIMESTAMP column returns all zeros

I want to insert a TIMESTAMP into my column's TIMESTAMP column, but I always get all zeros. Here is my insert: $now = 'NOW()'; // insert the date into the db $wpdb->insert( 'wp_date', ...
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85 views

WPDB update is not working for tables with large number of columns

I am using a form to update a cutom WP datatable. The update function is working fine for all the table except one which have 14columns. I can delete the rows but can't edit any entries. For edit I am ...