wpdb - Read For Learn

$wpdb not being defined in function: Fatal error: Call to a member function query() on a non-object

Okay, new solution. First off, I’d recommend making the link a submit button and making the name something unique: <submit name ‘del_gallery’ /> Then in the code of your admin page: include ‘ga-functions.php’; //checks to see if certain button was pressed if(isset($_REQUEST[‘del_gallery’] && isset($_GET[‘gallery_id’]) ) { $gallery_id = $_GET[‘gallery_id’]; delete_gallery($gallery_id); wp_redirect( $_SERVER[‘HTTP_REFERER’] ); exit(); }

wpdb updating record in wordpress with json adds extra array elements

Code only works every other time its run

301 Redirect Code

Assuming that the url parsing is correct and the data is actually set up correctly in the DB I think your SQL query is wrong. My suggestion is that you replace it by calling wp_query() api with the relevant parameters. Another suggestion that might not be a bug is not to use guid, as it … Read more

how to use $wpdb->prepare to update a custom table

When you look at the Codex article on $wpdb, then you will see that your current usage is correct. The last argument array( ‘%s’, ‘%d’, ‘%s’ ) already indicates that there is something like sprintf/printf going on in the background. The $wpdb->prepare() method isn’t needed for every other method. The ones that need it: $wpdb->query() … Read more

$wpdb->prepare with ON DUPLICATE KEY UPDATE

It’s my fault. Got the solution after @Otto’s comment: Do you actually have a duplicate key here? What is the structure of user_req and what are the keys and indexes? Here’s how my SQL query should be: INSERT INTO {$wpdb->prefix}user_req ( user_id, post_id ) VALUES ( %d, %d ) WHERE NOT EXISTS ( SELECT * … Read more

Codex: Database Description: meaning of Cardinality

How to get entry by title by using wpdb

Use get_results(‘SELECT * FROM wp_aacv WHERE post_title LIKE ‘”.$abcde.”‘ ‘);

sanitize_text_field and apostrophe problem

Problem in inserting row to custom database table

The simplest thing to do here is remove the: ‘id’ => “”, from the data array. Also, to simplify your database creation, you don’t need to do your get_var(), you can just change your SQL command to: CREATE TABLE IF NOT EXISTS $table_name This way you let the db handle creation of the table without … Read more

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