function _webform_analysis_rows_textarea in Webform 5.2

Same name and namespace in other branches

1. 5 components/textarea.inc \_webform_analysis_rows_textarea()
2. 6.2 components/textarea.inc \_webform_analysis_rows_textarea()

Calculate and returns statistics about results for this component from all submission to this webform. The output of this function will be displayed under the "results" tab then "analysis".

Parameters

$component: An array of information describing the component, directly correlating to the webform_component database schema

$sids: An optional array of submission IDs (sid). If supplied, the analysis will be limited to these sids.

Return value

An array of data rows, each containing a statistic for this component's submissions.

File

components/textarea.inc, line 163

Webform module textarea component.

Code

function _webform_analysis_rows_textarea($component, $sids = array()) {
  $placeholders = count($sids) ? array_fill(0, count($sids), "'%s'") : array();
  $sidfilter = count($sids) ? " AND sid in (" . implode(",", $placeholders) . ")" : "";
  $query = 'SELECT data ' . ' FROM {webform_submitted_data} ' . ' WHERE nid = %d ' . ' AND cid = %d ' . $sidfilter;
  $nonblanks = 0;
  $submissions = 0;
  $wordcount = 0;
  $result = db_query($query, array_merge(array(
    $component['nid'],
    $component['cid'],
  ), $sids));
  while ($data = db_fetch_array($result)) {
    if (drupal_strlen(trim($data['data'])) > 0) {
      $nonblanks++;
      $wordcount += str_word_count(trim($data['data']));
    }
    $submissions++;
  }
  $rows[0] = array(
    t('Left Blank'),
    $submissions - $nonblanks,
  );
  $rows[1] = array(
    t('User entered value'),
    $nonblanks,
  );
  $rows[2] = array(
    t('Average submission length in words (ex blanks)'),
    $nonblanks != 0 ? number_format($wordcount / $nonblanks, 2) : '0',
  );
  return $rows;
}