How to get mysql error in wordpress

Add this to your wp- config. php : define( ' WP_ DEBUG', true ) ;. By default WordPress does not show much debug information. More on this here. If you want to get the last error and last query you can use this properties of $ wpdb object: $ wpdb- > last_ error. will show you the last error, if you got one. will assist you with showing the last query ( where the error occurred). When enabled, PHP errors/ warnings/ notices and MySQL errors will be logged to wp- content/ debug. log and/ or printed to the screen. WordPress' s $ wpdb object also provides some debugging functions in case you wanted to debug MySQL issues. Chances are, no matter how many times you tested your code during development, you' ll have missed some highly obscure edge case. According to this ticket trac. org/ ticket/ 32315 the problem seems to could be that the value is either too long.

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  • Video:Error wordpress mysql

    Wordpress error mysql

    Use $ wpdb- > last_ query after inserting, then make this query via mysql client to see the error. If we' re writing to the database, make sure the query will write safely. if ( $ this- > check_ current_ query & &! abort if it deems it will fail - in this case you get your return false but no error will be set ( since it was never sent to the MySQL server). See wpdb Show and Hide SQL Errors. You can also print the error ( if any) generated by the most recent query with print_ error. Search the WordPress plugin repository for this and other debugging related plugins. For instance, the query may not return any MySQL errors, but it could run a query that is different than you expect. Show errors in Multisite: global $ wpdb, $ blog_ id; / / There' s no is_ multisite( ), so we need to check the ID / / te also that, unless you have turned them off previously, $ wpdb- > show_ errors is set to true by default, so you don' t need to call. To output something only when there is a DB error you can do one of these two things -. query succeeds, $ wpdb- > last_ error will be an empty string, if it fails, it will be the error string returned by MySQL. $ result = $ wpdb- > get_ results( " SELECT * FROM this is not a valid query" ) ; if ( $ wpdb- > last_ error) { echo ' You.