import browser bookmarks.html FAST using a regex with optional named groups

import_bookmarks.php

// href and title are required
// everything else is an optional named group, using format \s*(ATTR="(?P<attr>.*?)")?
$pattern = '|<DT><A HREF="(?P<href>.*?)"\s*(ADD_DATE="(?P<add_date>.*?)")?\s*(LAST_MODIFIED="(?P<last_modified>.*?)")?\s*(ICON_URI="(?P<icon_uri>.*?)")?\s*(ICON="(?P<icon>.*?)")?\s*(PRIVATE="(?P<private>.*?)")?\s*(TOREAD="(?P<toread>.*?)")?\s*(TAGS="(?P<tags>.*?)")?>(.*?)</A>|';
$string = file_get_contents("bookmarks.html");

preg_match_all($pattern, $string, $matches, PREG_PATTERN_ORDER);  // all pattern matches get their own sub-array

$array_filtered = array_filter($matches, "is_string", ARRAY_FILTER_USE_KEY);  // keep only named arrays (our groups)

echo count($array_filtered[href]);  // show count
// print_r($array_filtered);  // print everything

Tested with exported bookmarks HTML from:

• Chrome
• Firefox
• Opera
• Safari
• Pinboard
• Linkding

Supports attributes:

• HREF
• ADD_DATE
• LAST_MODIFIED
• ICON_URI
• ICON
• PRIVATE
• TOREAD
• TAGS
• Title