<?php mb_internal_encoding('UTF-8'); $text = <<<TEXT Павел Дуров fsdf sdf sdf TEXT; $filter = ''; $filter = mb_strtolower($filter); $parts = mb_split('[\x00-\x20]+', $filter); $parts = array_map('trim', $parts); $parts = array_filter($parts); $parts = array_map('preg_quote', $parts); $filter = implode('.*', $parts); echo "~{$filter}~uis";
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