Re: [PHP] Stripping illegal characters out of an XML document
On Thu, Jun 06, 2002 at 12:47:57PM +0100, Daniel Pupius wrote:
Hi there. I'm working with RDF/XML that is strict on what characters are
allowed within the elements and attributes. I was wondering if anyone had a
script that processed a string and replaced all illegal-characters with
their HTML code, for example is converted to and to . It should
also work for characters like é.
Here's what I use. I grab the file and stick it into the $Contents
string. Then, I clean it up with the following regex's. Finally, I
pass it to the parse function.
# Escape ampersands.
$Contents = preg_replace('/(amp;|)/i', 'amp;', $Contents);
# Remove all non-visible characters except SP, TAB, LF and CR.
$Contents = preg_replace('/[^\x20-\x7E\x09\x0A\x0D]/', \n, $Contents);
Of course, you can similarly tweak $Contents to drop or modify any other
characters you wish.
That's snipet is from my PHP XML Parsing Basics tutorial at
http://www.analysisandsolutions.com/code/phpxml.htm
It would be possible to process the strings before they are inserted into
the XML document - if that is easier.
While that's nice, it's not fool proof. What if someone circumvents
your insertion process and gets a bad file into the mix? You still need
to clean things as they come out just to be safe.
Enjoy,
--Dan
--
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Re: [PHP] Stripping illegal characters out of an XML document
Thanks, I've created a delimited file of all the HTML Character references.
I then loop through and do a replace as previously suggested. However,
IE's XML Parser still doesn't like the eacute; which represents é
For all intents and purposes it's ok and works with the RDF processor.
However, I'd like IE to be able to view the XML file just for completeness.
Da
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On Thu, Jun 06, 2002 at 12:47:57PM +0100, Daniel Pupius wrote:
Hi there. I'm working with RDF/XML that is strict on what characters are
allowed within the elements and attributes. I was wondering if anyone
had a
script that processed a string and replaced all illegal-characters with
their HTML code, for example is converted to and to . It should
also work for characters like é.
Here's what I use. I grab the file and stick it into the $Contents
string. Then, I clean it up with the following regex's. Finally, I
pass it to the parse function.
# Escape ampersands.
$Contents = preg_replace('/(amp;|)/i', 'amp;', $Contents);
# Remove all non-visible characters except SP, TAB, LF and CR.
$Contents = preg_replace('/[^\x20-\x7E\x09\x0A\x0D]/', \n,
$Contents);
Of course, you can similarly tweak $Contents to drop or modify any other
characters you wish.
That's snipet is from my PHP XML Parsing Basics tutorial at
http://www.analysisandsolutions.com/code/phpxml.htm
It would be possible to process the strings before they are inserted
into
the XML document - if that is easier.
While that's nice, it's not fool proof. What if someone circumvents
your insertion process and gets a bad file into the mix? You still need
to clean things as they come out just to be safe.
Enjoy,
--Dan
--
PHP classes that make web design easier
SQL Solution | Layout Solution | Form Solution
sqlsolution.info | layoutsolution.info | formsolution.info
T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y
4015 7 Av #4AJ, Brooklyn NY v: 718-854-0335 f: 718-854-0409
--
PHP General Mailing List (http://www.php.net/)
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Re: [PHP] Stripping illegal characters out of an XML document
Heya: On Thu, Jun 06, 2002 at 04:54:15PM +0100, Daniel Pupius wrote: Thanks, I've created a delimited file of all the HTML Character references. I then loop through and do a replace as previously suggested. However, IE's XML Parser still doesn't like the eacute; which represents é For all intents and purposes it's ok and works with the RDF processor. However, I'd like IE to be able to view the XML file just for completeness. Try #233; and see if IE likes that. If not, on the way out to the browser, you can convert your escaping back to an é. Ciao! --Dan -- PHP classes that make web design easier SQL Solution | Layout Solution | Form Solution sqlsolution.info | layoutsolution.info | formsolution.info T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y 4015 7 Av #4AJ, Brooklyn NY v: 718-854-0335 f: 718-854-0409 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
