Latest Articles

Yesterday, we released DotKernel 1.2.

PHP 5.2.

Finally we reached DotKernel 1.2.

On a TIMESTAMP field that records date and time when inserting a new record, it is encouraged to use as a DEFAULT value, the CURRENT_TIMESTAMP constant. Why? Because when inserting a new row in the table for the date and time field there is no need to specifically add its value, either by creating it from PHP code with the Date/ Time functions or with MySQL function NOW() ALTER TABLE `user` CHANGE `dateCreated` `dateCreated` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP; CURRENT_TIMESTAMP is also a solution for  updating date and time fields.

Following the preview article about SQL Injection, here is more - a strong argument why you should use Zend Framework for handling database access. Zend_Db is the primary class used for access the database, but there is more: Zend_Db_Statement, Zend_Db_Select and Zend_Db_Tables.

SQL injection is a technique that exploits a security vulnerability occurring in the database layer of an application. Usually, user input is not filtered by the script and is passed into a SQL statement.

Continuing the Zend_DB article series, we are stopping now at DML statements. DML (Data Manipulation Language) statements are statements that change data values in database tables.

Continuing the Zend_DB article series, we are stopping now at subqueries. As you note, the below is a complicate query, with COUNT(), LEFT JOIN(), GROUP BY - select from 3 tables, and make a count from 2 different tables: SELECT a.

Continuing the Zend_DB article series, we are stopping now at FETCH methods that are in Zend_Db_Adapter_Abstract: array fetchAll (string|Zend_Db_Select $sql, , ) array fetchAssoc (string|Zend_Db_Select $sql, ) array fetchCol (string|Zend_Db_Select $sql, ) string fetchOne (string|Zend_Db_Select $sql, ) array fetchPairs (string|Zend_Db_Select $sql, ) array fetchRow (string|Zend_Db_Select $sql, , ) To be more easily to follow, in green box is the classical SQL statement, and in blue box is the query written in Zend_Db style. Lets start.

Zend_Db and its related classes provide a simple SQL database interface for Zend Framework. To connect to MySql database, we are using Pdo_Mysql adapter : $db = Zend_Db::factory('Pdo_Mysql', $dbConnect); SELECT query - WHERE clause The below 2 classical SQL queries are equivalent.