search_simplify
modules/search/search.module, строка 336
- Версии
- 5 – 6
search_simplify($text)
Simplifies a string according to indexing rules.
Код
<?php
function search_simplify($text) {
// Decode entities to UTF-8
$text = decode_entities($text);
// Lowercase
$text = drupal_strtolower($text);
// Call an external processor for word handling.
search_preprocess($text);
// Simple CJK handling
if (variable_get('overlap_cjk', TRUE)) {
$text = preg_replace_callback('/['. PREG_CLASS_CJK .']+/u', 'search_expand_cjk', $text);
}
// To improve searching for numerical data such as dates, IP addresses
// or version numbers, we consider a group of numerical characters
// separated only by punctuation characters to be one piece.
// This also means that searching for e.g. '20/03/1984' also returns
// results with '20-03-1984' in them.
// Readable regexp: ([number]+)[punctuation]+(?=[number])
$text = preg_replace('/(['. PREG_CLASS_NUMBERS .']+)['. PREG_CLASS_PUNCTUATION .']+(?=['. PREG_CLASS_NUMBERS .'])/u', '\1', $text);
// The dot, underscore and dash are simply removed. This allows meaningful
// search behaviour with acronyms and URLs.
$text = preg_replace('/[._-]+/', '', $text);
// With the exception of the rules above, we consider all punctuation,
// marks, spacers, etc, to be a word boundary.
$text = preg_replace('/['. PREG_CLASS_SEARCH_EXCLUDE .']+/u', ' ', $text);
return $text;
}
?>
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