Development WikiI previously wrote about switching from the mysql extension to PDO. PDO introduces a number of convenient affected_rows dbal beyond the affected_rows dbal extension such as transactions, prepared statements, and more fetching options. However there are still a few things that are a bit painful. It adds a few conveniences beyond straight PDO as affected_rows dbal as a query builder. There are a number of projects under the Doctrine umbrella affected__rows a full ORM.
Data Retrieval And Manipulation - Database Abstraction Layer (DBAL) - Doctrine
Data inside the query should be properly escaped. If no rows were affected, PDO:: Please read the section on Booleans for more information. The following example incorrectly relies on the return value of PDO:: Edit Report a Bug.
Description public int PDO:: Parameters statement The SQL statement to prepare and execute. This function cannot be used with any queries that return results. So it is not a reliable way of testing the op status. It's worth noting here, that - in addition to the hints given in docs up there - using prepare, bind and execute provides more benefits than multiply querying a statement: If you insert some binary data e. Separating the statement code from related data using prepare, bind and execute is best method - fast and secure!
If you do, PDO will lock-up with the "Cannot execute queries while other unbuffered queries are active. I use this so I can place all my SQL statements in one place, and have auto safe quoting against sql-injections. I was getting NO error messages at all. I could connect and select data, but not modify it. It wasn't until I added the following line: As root I could read and write the database from the sqlite3 command line monitor.
But Apache was unable to write the database. Changed the permissions to wwwrun: If you do this: Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO:: Incidentally, the INSERT statement that I was issuing, if the record that I needed to update didn't yet exist, after the initial fetch command worked perfectly. Changing to fetchAll fixed it.