When activated by settings its value to
group_columns_by_name option will convert the return values into arrays of values when multiple columns of the same name are found.
The option implies the usage of the
columns mode where records are returned as literal objects. An error is thrown if the
columns mode is not activated.
false(a one character comma)
- Since: 4.10.0
columns— see Available Options
- History: prior to version 5.0.0, this option was named
The group_columns_by_name example contains a CSV data set with two columns named "email". Without the
group_columns_by_name option, only the last email will be available. Instead, every email is returned in the form of an array: