I'm having a similar problem here if I pass a numeral inside $searchenquiry
$searchenquiry = "1.0.1 Retrospective bibliographies and checklists / bibliographies et répertoires rétrospectifs"; preg_replace ('/('.$searchenquiry.')/i' , "<b>$1</b>", $mydata->RB) error: Unknown modifier 'b' in <b>/www-html/new1/db/display.table.inc</b> on line <b>103</b> -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php