How to print header

Submitted by twahl on Sat, 2010-02-20 22:21.Magic Parser

I am trying to print not only the records, but also header tags. For example:

<TotalPages>160</TotalPages>

Many thanks, Thomas

Hi Thomas, You just caught

Submitted by support on Sat, 2010-02-20 22:38.

Hi Thomas,

You just caught me! I'll answer now but it may be tomorrow before I can follow up if necessary...

What you need to do is parse your XML at a higher level to extract any "header" information you want that is higher up the tree than the repeating records that you are primarily interested in before parsing the repeated records. Because this involves parsing twice, it's more efficient to load your XML into a string rather than read the file / URL twice.

As an example, consider the following XML:

<Results>

  <Query>Bar</Query>

  <TotalPages>160</TotalPages>

  <CurrentPage>1</CurrentPage>

  <Result>

    <Foo>Bar1</Foo>

  </Result>

  <Result>

    <Foo>Bar2</Foo>

  </Result>

  <Result>

    <Foo>Bar3</Foo>

  </Result>

</Results>

To extract TotalPages before displaying each Result, you would do something like this:

<?php
  require("MagicParser.php");
  function myHeaderRecordHandler($record)
  {
    global $TotalPages;
    $TotalPages = $record["TOTALPAGES"];
  }
  function myRecordHandler($record)
  {
    // display each record here
  }
  $xml = file_get_contents("results.xml"); // could be URL
  MagicParser_parse("string://".$xml,"myHeaderRecordHandler","xml|RESULTS/");
  print "Total Pages:".$TotalPages;
  MagicParser_parse("string://".$xml,"myRecordHandler","xml|RESULTS/RESULT/");
?>

Hope this helps!
Cheers,
David.

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