94WP_DEBUG is an useful debugging tool available in WordPress to see PHP errors on your website and they are helpful for developers to troubleshoot issues with the website. To turn on WP_DEBUG, add following code in wp-config.php define(‘WP_DEBUG’,true); It is not advisable from security point ..
PHP Isset() and Empty()
324Empty() Returns False if empty() has non-empty and non-zero value. Returns True for Null, 0, “” Isset() Returns False for Null Returns True for 0, “” or any value Both Textareas and Texboxes will sent “” values and not Null to the $_POST, so use Emtpty() ..
WordPress – How to pass variable as parameter in URL
560This simple method worked for my WordPress website to pass a parameter in URL. In this tutorial, the Datewise Invoices page lists down all the invoices created between the dates. When you click on a specific Invoice No, the invoice no is passed as parameter value and a new webpage opens ..
showing errors with wpdb update or insert query
448exit(var_dump( $wpdb->last_query )) prints the last query that is executed by database. This is very useful for developers to verify and troubleshoot errors in your query syntax or data format. One sample is presented here for you. if ($wpdb->update(“laundry_item_master”, array( ..
wpdb last_query, last_result, last_error
541There are times that you wanted to print the exact query itself or query result right after it is executed. Use following wpdb class variables to troubleshoot. $wpdb->last_query This prints that last query that is executed, I mean the exact MySQL Query itself. $laundrycustomer = $wpdb->get_row(“SELECT ..
Difference between wpdb get_row(), get_results(), get_var() and get_query()
849WordPress defines a class called wpdb, which contains a set of functions used to interact with a database. Its primary purpose is to provide an interface with the WordPress database, but can be used to communicate with any other appropriate database. The $wpdb object can talk to any number of tables, ..