Проблемы с алфавитным поиском

$tempArray[] = "tags REGEXP '[[:<:]](" . $value  . ")[[:>:]]'";

$tempArray[] = "tags REGEXP '\\\\b(" . $value  . ")\\\\b'";

$where_approve . " ORDER BY " . PREFIX . "_comments.id " . $comm_msort;

$where_approve . " ORDER BY " . PREFIX . "_comments.rating " . $comm_msort;

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