Programmed responses question type

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Note: You are currently viewing documentation for Moodle 1.9. Up-to-date documentation for the latest stable version is available here: Programmed responses question type.

The programmed response question type for Moodle 1.9 gets the question answer through a set of editable and non-native PHP functions. Useful for maths or statistics exercices which requires complex operations to get the answer.


  • Users can add variables to the question text, the variables takes random values depending on

the user selection: max value, min value, increment and the number of values (scalar/vectorial - float/array)

  • The function arguments can be one of the question text defined variables, a concatenation of defined variables or fixed values.
  • User interface to allow the addition of functions. These functions can return one or more values, useful for example to return confidence intervals.


  • Moodle 1.9.x
  • Users with Javascript/AJAX support enabled


From the Moodle Plugins database.


  1. 1st step (optional): Variables can be added to the question text following the next format: {$varname}

The variables only accepts alphanumeric characters.

  1. 2nd step (optional, depends on the first step): Each variable must define the maximum and minimum values it can take, the increment and the number of values, to allow vectorial variables.
  1. 3rd step (optional): Add concat variables, useful if there should be a vectorial variable which values follows different criteria
  1. 4th step: Select the function which will calculate the answer (read ADDING FUNCTIONS to know how to add functions)
  1. 5th step: Assign each of the function arguments to a variable or a concat variable, the function can also use a fixed value as argument

Adding functions

There is an interface to allow the addition of functions; preceding the php implementation of each function there should be a comment block following phpdoc format, to specify the arguments description and the returned values.


Tool designed by Josep Maria Mateo, Carme Olivé and Dolors Puigjaner, members of DEQ and DEIM departments of the Universitat Rovira i Virgili. Consultoria Mosaic

See also