This class can extends MySQLi class to perform common SQL queries.

It is a subclass of the MySQLi class built-in class that provides additional functionality like:

- Executes SELECT queries with results from multiple rows from another query result
- Executes SELECT queries that result in a single row
- Retrieves the total number of rows and consulted columns
- Retrieves an array of values ​​of a given table field
- Executes SQL statements INSERT, DELETE, UPDATE
- Inserts records in a table from array values
- Update records of a table from an array of values and a condition
- Remove table records
- Converts an associated a key-value into a string separated by the indicated separator
- Retrieve the results of a SELECT query in multiple rows mode or in a single row or the first row of multiple rows
- Assemble a JSON string from the results of value of a query with two columns the first is the key and the second the value
- Etc..

The code and the comments are in Spanish.

In Spanish:

Clase PHP para el manejo de la conexión e interacción con la base de datos MySQL. Clase que extiende de MySQLi.