giuliomoro@607: <?php
giuliomoro@607: // need to generate an array $tests containing the tests in the order they shuold be executed
giuliomoro@607:   $preSurvey = $defaultTestEntry;
giuliomoro@607:   $preSurvey['url'] = 'index.html?url=example_eval/pre_survey.xml';
giuliomoro@607:   $preSurvey['string'] = 'Pre-survey';
giuliomoro@607:   
giuliomoro@607:   $postSurvey = $defaultTestEntry;
giuliomoro@607:   $postSurvey['url'] = 'index.html?url=example_eval/post_survey.xml';
giuliomoro@607:   $postSurvey['string'] = 'Post-survey';
giuliomoro@607: 
giuliomoro@607:   $abTests = Array($defaultTestEntry, $defaultTestEntry, $defaultTestEntry, $defaultTestEntry);
giuliomoro@607:   $abTests[0]['url'] = 'index.html?url=example_eval/ABshort.xml';
giuliomoro@607:   $abTests[0]['string'] = 'AB0';
giuliomoro@607:   $abTests[1]['url'] = 'index.html?url=example_eval/ABshort.xml';
giuliomoro@607:   $abTests[1]['string'] = 'AB1';
giuliomoro@607:   $abTests[2]['url'] = 'index.html?url=example_eval/ABshort.xml';
giuliomoro@607:   $abTests[2]['string'] = 'AB2';
giuliomoro@607:   $abTests[3]['url'] = 'index.html?url=example_eval/ABshort.xml';
giuliomoro@607:   $abTests[3]['string'] = 'AB3';
giuliomoro@607: 
giuliomoro@607:   $likertTest = $defaultTestEntry;
giuliomoro@607:   $likertTest['url'] = 'index.html?url=example_eval/labelling.xml';
giuliomoro@607:   $likertTest['string'] = 'Labelling';
giuliomoro@607:   // the shuffling of the elements is bound to the last 8 characters of $id
giuliomoro@607:   $seed = hexdec(substr($id, -8)); 
giuliomoro@607:   //shuffling only the order of the ABtests
giuliomoro@607:   fisherYatesShuffle($abTests, $seed);
giuliomoro@607:   $tests = array_merge(Array($preSurvey), $abTests, Array($likertTest), Array($postSurvey));
giuliomoro@607: