Database for MySQL almost completed

MySQL part is now finished but still needs to be tested
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[NEW] $return_boolean is a variable that can control if the function
will return a boolean value back to identify if the function works
properly and no exception will be thrown but the errors will be
recorded in ->_LOGS. You may print_r out the ->_LOGS array to review
the errors
[EXTRAS] are functions that based on mysql_XXX to give you a easy way
to work on mysql_query. Queries will be done for you by adding a few
parameters