function search_expression_extract in Drupal 7

Extracts a module-specific search option from a search expression.

Search options are added using search_expression_insert(), and retrieved using search_expression_extract(). They take the form option:value, and are added to the ordinary keywords in the search expression.

Parameters

$expression: The search expression to extract from.

$option: The name of the option to retrieve from the search expression.

Return value

The value previously stored in the search expression for option $option, if any. Trailing spaces in values will not be included.

2 calls to search_expression_extract()

SearchExpressionInsertExtractTestCase::testInsertExtract in modules/search/search.test

Tests search_expression_insert() and search_expression_extract().

SearchQuery::setOption in modules/search/search.extender.inc

Applies a search option and removes it from the search query string.

File

modules/search/search.module, line 871

Enables site-wide keyword searching.

Code

function search_expression_extract($expression, $option) {
  if (preg_match('/(^| )' . $option . ':([^ ]*)( |$)/i', $expression, $matches)) {
    return $matches[2];
  }
}