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Re: String Replacement

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  Re: String Replacement Pavel Lepin <p.lepin@dyninno.com> - 2011-02-07 10:17 +0200
    Re: String Replacement Alec <ajtdds@aol.com> - 2011-02-07 22:39 -0800

#11032 — Re: String Replacement

Alec wrote:
> I am not sure where to start on this on.

Read up on XML processing.

> I have a string as follows '<text
> identifier="3ecebe84-8ddd-475e-86ca-300b5298fc34">
>   <value><![CDATA[12345]]></value>'
> 
> The text identifier always remains the same ie. 3ece..... for each
> article. The string is much longer containing several different
> identifiers. I would like to be able to jump to the one shown, and
> then extract the CDATA value shown after ie. 12345. The length of this
> may change, so I need a way to extract the text between the second '['
> and first ']' . I hope that makes sense.

Assuming your actual data is well-formed XML (the above snippet is not):

<?php

  $dom = new DOMDocument;
  $dom->loadXML($string);
  $xpath = new DOMXpath($dom);
  $query = '/text[starts-with(@identifier, \'3ece\')]/value/text()';
  $nodelist = $xpath->evaluate($query);
  if ($nodelist->length === 1)
  {
    print($nodelist->item(0)->nodeValue."\n");
  }
  else
  {
    die('invalid query result: '.
        '['.strval($nodelist->length).'] nodes returned'."\n");
  }

?>

-- 
Pavel Lepin

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#11195

Firstly many thanks both of you for the quick reply.

XML processing is new to me, but I will try to get my head around
this.

Alec

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