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- /**
- * Sanitizes title, replacing whitespace with dashes.
- *
- * Limits the output to alphanumeric characters, underscore (_) and dash (-).
- * Whitespace becomes a dash.
- *
- * @since 1.2.0
- *
- * @param string $title The title to be sanitized.
- * @return string The sanitized title.
- */
- function sanitize_title_with_dashes($title) {
- $title = strip_tags($title);
- // Preserve escaped octets.
- $title = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '---$1---', $title);
- // Remove percent signs that are not part of an octet.
- $title = str_replace('%', '', $title);
- // Restore octets.
- $title = preg_replace('|---([a-fA-F0-9][a-fA-F0-9])---|', '%$1', $title);
- $title = remove_accents($title);
- if (seems_utf8($title)) {
- if (function_exists('mb_strtolower')) {
- $title = mb_strtolower($title, 'UTF-8');
- }
- $title = utf8_uri_encode($title, 200);
- }
- $title = strtolower($title);
- $title = preg_replace('/&.+?;/', '', $title); // kill entities
- $title = str_replace('.', '-', $title);
- $title = preg_replace('/[^%a-z0-9 _-]/', '', $title);
- $title = preg_replace('/\s+/', '-', $title);
- $title = preg_replace('|-+|', '-', $title);
- $title = trim($title, '-');
- return $title;
- }
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