PHP class to access MySQL database wrapper using MySQLi

This class can:

• Connect to a given MySQL server
• Execute arbitrary SQL queries
• Retrieve the number of query result rows, result columns and last inserted table identifier
• Retrieve the query results in a single array
• Escape a single string or an array of literal text values to use in queries
• Determine if one value or an array of values contain common MySQL function calls
• Check of a table exists
• Check of a given table record exists
• Return a query result that has just one row
• Execute INSERT, UPDATE and DELETE queries from values that define tables, field names, field values and conditions
• Truncate a table
• Send email messages with MySQL access and query errors
• Display the total number of queries performed during all instances of the class

Full usage examples are provided in example.php, using example data provided in example-data.sql