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   1. drupal6
   2. drupal7

Extract a module-specific search option from a search query. e.g. 'type:book'

Code

modules/search/search.module, line 671

<?php
function search_query_extract($keys, $option) {
  if (preg_match('/(^| )' . $option . ':([^ ]*)( |$)/i', $keys, $matches)) {
    return $matches[2];
  }
}
?>