[PHP] use xml_set_character_data_handler outside of scope

[Dan Field]

I've tried a couple of different ways to use this function to set a 
variable outside of the usual scope of my characterData function but I'm 
not having much luck. Heres some sample code:

<?php
$xml_repository = "/var/www/html/mets/sample/";
$depth = array();
$searchable_tags = array("MODS:TITLE");
$current_data = "";
$dir_array = array();
$hits = 0;
$MAXHITS = 100;
$search_term;
$flag = false;
                                                                                                                                              

function startElement($parser, $name, $attrs) {
       global $depth, $searchable_tags, $current_data, $hits, $colour, 
$flag;
                                                                                                                                              

       if (in_array($name,$searchable_tags)) {
               if (preg_match("/".$search_term."/i",$current_data)) {
                       $flag = true;
                       echo "<div 
bgcolor=\"#$colour\">$current_data</div><br />";
                       $hits++;
               }
       }
       $depth[$parser]++;
}
                                                                                                                                              

function characterData($parser, $data) {
       global $current_data;
       $current_data =  $data;
}
                                                                                                                                              

function endElement($parser, $name) {
       global $depth, $flag;
       $depth[$parser]--;
       if ($flag) { $flag = false; }
}
function search_data($term,$data) {
       if (preg_match($term,$data)) { return true; } else { return false; }
}                                                                                                                                              

                                                                                                                                              

// read all the xml files and parse through search engine
if ($handle = opendir($xml_repository)) {
       $i = 0;
       while (false !== ($file = readdir($handle))) {
               $dir_array[$i] = $file;
               $i ++;
       }
       closedir($handle);
}
                                                                                                                                              

for ($i = 2; $i < count($dir_array); $i++) {
       $xml_parser = xml_parser_create("UTF-8");
       xml_set_element_handler($xml_parser, "startElement", "endElement");
       xml_set_character_data_handler($xml_parser, "characterData");
                                                                                                                                              

       if (!($fp = fopen($xml_repository.$dir_array[$i], "r"))) {
               die("could not open XML input");
       }
                                                                                                                                              

       while ($data = fread($fp, 4096)) {
               if ($hits >= $MAXHITS) { echo "<p><b>over 100 
hits!\n</b> Stopping here.</p>"; exit; }
               if (!xml_parse($xml_parser, $data, feof($fp))) {
                       die(sprintf("XML error: %s at line %d",
                               
xml_error_string(xml_get_error_code($xml_parser)),
                               xml_get_current_line_number($xml_parser)));
               }
       }
                                                                                                                                              

       xml_parser_free($xml_parser);
}
                                                                                                                                              

?>
If I use $current_data = $data; I get nothing back at all,
If I use $current_data .= $data; I get the concatenated response as 
expected but is not what I am after.
All I want is the value of $data at that particular point in the parse.

Any help much appreciated.
--
Dan Field <[EMAIL PROTECTED]>
Support Programmer: Cymru ar y we / Wales on the Web
cy_GB: http://www.cymruarywe.org
en_GB: http://www.walesontheweb.org
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