we've been successfully using this PHP statement as a part of an AJAX title lookup.
however, when the enduser enters a slash as a part of the title,
it gives the warning below.
how should i quote slashes or change the approach to allow slashes to be entered in the web form input field.
The function of the statement below is to add HTML tags (CSS class) to yellow-highlight
the user-input within the found-results title list items.
$search_string in this situation contains 20/
$HighlightedDisplayTitle = preg_replace(
Warning: preg_replace() [function.preg-replace]: Unknown modifier '1' in /public_html/ajax-title-lookup.php on line 51