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

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55 views

wpdb insert working in one function, but not another

I have the following function: function addToShortlist($propref) { global $wpdb; if (isset($_SESSION['shortlist'])) { $shortlist = new Namespace\Shortlist($_SESSION['shortlist']); ...
2
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1answer
24 views

When and why should I use $wpdb different return types?

This one returns an object $mylink = $wpdb->get_row("SELECT * FROM $wpdb->links WHERE link_id = 10"); An associative array $mylink = $wpdb->get_row("SELECT * FROM $wpdb->links WHERE ...
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235 views

Convert a WP Query into a simpler SQL query to fetch only COUNT of posts

I have this WP Query running for each row in my admin screen for a certain post type: $entry_args = array( 'meta_key' => 'wp_comp_entry_competition-id', '...
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278 views

Export Wordpress Table to CSV from page

I want to export my members table to csv format on my default download location. So I used a shortcode in functions.php and called it on a page. I am getting an already sent header warning and csv ...
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1answer
207 views

Site going down due to slow queries

My site keeps going down and the host says it's due to some slow queries overloading the server. They've supplied a list of slow queries, any pointers as to what I should be doing to get rid of or ...
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45 views

meta_value timestamp older than now

In my wp_posts table I want to select the rows where post_type == event. I also want to a connection with wp_postmeta from the specific row. In my wp_postmeta table I want to do a where like this: ...
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310 views

form $_post action value gets truncated after it passes through two forms

There are three pages page1, page2 and page3. When I press submit on my first form on page 1 my group name field can be catched with $_POST['groupname'] in the destination page but in the page 2 I ...
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260 views

Passed variable gets undefined variable error on insert on next page

I am passing a variable with $_POST to another page and on the destination page I want to perform an insert operation and want to use that passed value . The variable "$mygroup" is coming from a forms ...
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56 views

Database query works fine outside Wordpress

This is my code <?php global $wpdb; $rows = $wpdb->get_results("SELECT `submit_time` AS 'Submitted', max( if( `field_name` = 'Salutation', `field_value` , NULL ) ) AS 'Salutation', max( if( `...
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58 views

I am not getting result from php function that is json encoded

So I am trying to build an array of post data. But when I json encoded it I am not getting back the post object data from the database. Here are my two functions public function get_post_from_url(){...
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69 views

Object Cache - Avoid db queries totally

I am using object cache and have cached just about all queries but am stuck with the last 3, on a post archive page. They are all wp core queries. SELECT SQL_CALC_FOUND_ROWS wpm_posts.ID FROM ...
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418 views

Updating with $qpdb->query() always returns 0 rows affected

I'm experiencing an odd situation while running an UPDATE with $wpdb->query(). Given the users table, with columns user_id (Primary Key) and status, and the user 3 existing and with status 0, I ...
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383 views

duplicate entries in database while using save_post or wp_insert_post

Here is what I am trying to do - I have created a custom table in the database and I am trying to enter data into it everytime a post is created. The database-entry needs to happen ONCE AND ONLY WHEN ...
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1answer
27 views

Quotes in table name

Since WP3.5, prepare() accepts placeholders as a security measure, instead of just appending the argument to the query. Therefore, $wpdb->prefix needs to become a second parameter, called by %s: $...
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1answer
82 views

$wpdb returns duplicate posts

I have created a shortcode which shows the posts which were created after the user last logged in. The shortcode is working perfectly fine, but I am not sure why but I am getting 7 duplicate posts. So ...
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2answers
369 views

Saving custom term value to the database in new table

So I'm trying to save the value of a custom term to my database. The table is created as is the custom term. The code below outputs the text field onto my custom terms page but it just doesn't save ...
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2answers
564 views

WordPress get pagination on wpdb get_results

How do I gee the numbered pagination of custom wpdb result? below code will show one latest post from each authors in the site. I want to show 20 posts per page with a numbered pagination. $postids ...
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2answers
1k views

Is it mandatory to use $wpdb->prefix in custom tables

Sorry if this question is trivial. I'm just beginning to develop plugins in WordPress. In all the tutorials I found this: while creating the custom tables, $wpdb->prefix is used. Example: $...
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63 views

Run insert if no entry otherwise run update with ajax

Below function works with ajax ... but I am getting a null result ... I want that if there is no data in the database then insert operation is performed and when there is data the update should work. ...
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1answer
39 views

How can I migrate mysql_fetch_array to $wbpdb?

I am migrating a script with direct MySQL access to the $wpdb class, but it fails. Below is both original and new code next to each other. What is wrong? <!-- #####################################...
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1answer
51 views

Why my query does not run with prepare

Hi Below is my query and it works with prepare keyword on the localhost but whenever I use prepare keyword with my queries on live server the data does not show up and as soon I remove prepare from ...
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1answer
151 views

$wpdb->prepare is not working like mysql_real_escape_string

I'm working on a WordPress plugin and recently I have planned to migrate from SQL to $wpdb. I'm using a method called $wpdb->prepare instead of mysql_real_escape_string but it does not work. Here ...
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1answer
105 views

How to set up prepared query using IN statement

I am a tad bit confused on how I would set up a SQL IN statement using a prepared query. Here is the code: $in = implode(',', array_fill(0, count($product_ids), '%d')); $results = $this->...
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2answers
1k views

How to query the WordPress database to get posts of a certain custom post type, taxonomy and field?

I have a custom post type named store and I have a custom taxonomy city, I also have a meta box with a field that is stored with update_post_meta( $post_id, 'store_postal_code', $postal_code ); it ...
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1answer
310 views

wpdb and acf via wp rest api

I made a custom endpoint with wp rest api for /wp-json/dn/locations which in turn runs the following wpdb query $sql = "SELECT * FROM wp_posts p WHERE p.post_type = 'location' AND p.ID = 133;"; $...
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166 views

Inserting and updating rows with wpdb indreases integer fields by 1 point sometimes

OK, here is the situation: I have a table with the fields "ID" (int, auto incremented), "query" (text), and "counter" (int). I am trying to make it so if a selected value exists in the "query" column, ...
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1answer
113 views

Problem in inserting row to custom database table

I have a custom table in database named wp_tasks which has 5 fields. But I am unable to insert the current time to assign_date field. wp_tasks table id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, ...
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1answer
781 views

$wpdb->get_results returns empty but value exists

this is my first question here. More then 5 years working with Wordpress, I always find the right way through the Google, but in this case I did not even know what to do, I really stacked :( So ... ...
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1answer
130 views

Custom database query to validate data

I cant find any syntax for custom queries, use of $wpdb is new to me so can anyone help me solving this?? if(isset($_POST['submit'])) { global $wpdb; $tablename='wp_form_subscribe'; $myrows = $...
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1answer
73 views

Read post meta values, only if posts are public

I want to retrieve meta_values applied to posts. Currently I execute the following query global $wpdb; $table = $wpdb->prefix.'postmeta'; $values = $wpdb->get_results( "SELECT meta_value ...
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1answer
842 views

Get an array of meta_values for a user meta_key

I need to get an array of all the meta_values for a user meta_key. I found this code: $cities = $wpdb->get_col("SELECT meta_value FROM $wpdb->usermeta WHERE meta_key = 'my_cities_meta_key'" ); ...
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100 views

Function returning queried meta value based on current post ID

I have written several queries which sums download counts grouped by the post they are associated with, and other relations. They work great for exporting to CSV and other uses outside of WordPress, ...
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1answer
63 views

WPDB SQL Ignore `post_status` Parameter

I use this SQL statement: SELECT * FROM wp_posts LEFT JOIN wp_term_relationships ON ( wp_posts.ID = wp_term_relationships.object_id ) LEFT JOIN wp_term_taxonomy ON ( wp_term_relationships....
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1answer
30 views

Issue regarding $wpdb->prepare()

$wpdb->prepare() is adding single quote ('') like below. I am using below code $sql = $wpdb->prepare("SELECT * FROM %s ",$table_name); echo $sql; I am getting output like below SELECT * FROM '...
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1answer
24 views

How to add next height number in Order Attributes inside the Add new page. [duplicate]

By default, when a new page is added it will be given the next highest number not already assigned to a page.
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344 views

sanitize_text_field and apostrophe problem

I've written a custom plugin to send data via a form to a personal database, different from the WP one. Everything is working fine except the fact that when you write a name, for example D'ALESSANDRO, ...
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2answers
88 views

Optimising amount of calls to custom fields

I have this code fragment in my codebase: foreach($this->adverisers as $adveriser) { $this->data[$adveriser->name]['image'] = bfi_thumb(get_post_meta($adveriser->ID, ...
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214 views

Save customizer default values to DB on theme activation

i am working with multisite. each time i activate some theme in new blog, i need to go to customizer and click the "save" to save all the values to db so i could use the with get_theme_mod if there ...
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1answer
224 views

How to get DB options format without saving? [closed]

Using Unyson framework. I am getting theme options form data saved to a file. Was able to do that via ajax and JSON.stringify(form values in json format) problem I have is that the form data ...
1
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1answer
42 views

WSoD being caused by this piece of code

This is a function I'm writing which is supposed to post an input along with some other information, to a database. As of right now, activating the plugin produces a WSoD, when the function is removed ...
1
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1answer
145 views

Avoiding “Usage of a direct database call is discouraged”

WordPress-Coding-Standards reports that "Usage of a direct database call is discouraged." It's complaining about my usage of $wpdb->insert() in a plugin. Is this not recommended? What is the ...
1
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1answer
840 views

Get data from database using $WPDB

I'm missing something here. I simply want to get data from my database. So I tried this but keeps giving me an error. global $wpdb; $sql = "SELECT * FROM $wpdb->postmeta WHERE group='$group'"; $...
0
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1answer
41 views

How to Generate a list of Most Commented post?

I'm trying to call a list of most commented post. But the call to the DB returns always the same post (the first one in the loop) This is my code in functions.php function ...
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72 views

Using $wpdb to fetch posts with meta data

I have a post type "shows" with 500 posts in it. I want to list all 400 in one page listing their title + 5 meta fields and a url to the show post thumbnail. I initially went the classic wordpress ...
0
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1answer
118 views

Plugin with connection to database - Single function

I'm creating a personal plugin with more files and I need to connect to an external database with WPDB. At the moment I'm repeating "new wpdb(...)" in every function, in every file, of my plugin. Is ...
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3answers
693 views

Ajax insert or update data

I've been browsing through similar questions and have yet to get this functionality to work. I'm tracking the progress a user makes an embedded vimeo video and insert data or update data. JS on the ...
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120 views

$wpdb->insert running multiple times?

Im trying to run a $wpdb->insert ONCE on every page load (for testing purposes). The insert will insert a meta field for a post type. I have tried hooking the insert function into "init", add it to ...
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31 views

get_results is not working properly

I tried to find an answer in many forums for this problem, but it has been impossible. My problem is that when I do $wpdb->get_results in an empty table, mi webpage immediately stops working. ...
0
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1answer
41 views

Plugin will sort users by usermeta

As I refine my most popular plugin it will store a special number decoded from the user's birth date, which is an extended BuddyPress field in bp_xprofile_data. All users get a number between 1 and ...
5
votes
1answer
238 views

WordPress and multithreading

I'm working on a plugin. I've created an API that reads and writes to a custom table in the DB. This API can be called potentially from N clients simultaneously (and it really happens). I noticed that ...