phpxpath-users — General user discussion of Php.XPath

[phpXML] Re: [phpXML] Shortcut to attributes.

[<nig...@us...>]

> I am looking for an alternative to the following syntax
>
> $courts = $xml->evaluate($result . '/COURTS_SEARCHED/COURT');
> foreach ($courts as $court):
>                  $courtinfo = $xml->get_attributes($court);
>                print $courtinfo['NAME'];
> endforeach;
>
> is there a shorter way of getting at that attribute.
> I triad a variety of @ syntax but nothing I did seems to work.

    $courts = $xml->evaluate($result . '/COURTS_SEARCHED/COURT');
    foreach ($courts as $court):
        print  $xml->getAttributes($court, 'NAME');
    endforeach;

Is slightly neater.  With the current XPath support, I think it's the best
you will get.

Ultimately there should be some kind of solution where you call getData()
instead of getAttribute() with evaluate() returning an array of
absoluteXPaths to attribute nodes, but if there is we currently aren't
supporting it.  ie evaluate would return
"/COURTS_SEARCH[1]/COURT[1]/attribute::NAME", and you'd pass this to
getAttributes().  You'd end up with the same no. lines of code though, so
perhaps it isn't really any neater?

Nigel

===========================
For the most recent version of phpxml, V1.N.X, and an archive of this list
visit:  http://www.sourceforge.net/projects/phpxmldb

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[phpXML] [xpath.class.php] Question (stupid one ?)

[<lu...@sa...>]

Hello,

I'm still fighting with xpath.class.php

I don't buy the fact the problems I have with xpath.class.php are related 
to my ISP because xml.php 1N6 works like a charm) and I use it a lot.

So I'd to have a detailed explanation of the meaning of the following error :
phpXML error: While parsing an XPath expression there was an error in the 
predicate "Gerhard", because it was the null string. If you wish to seach 
for the empty string, you must use ''.


Context
========
xpath.class.php

Line 1996
     if (ereg('^\w*$', $predicate)) {
       // Display an error message.
       $this->_displayError("While parsing an XPath expression ".
         "there was an error in the predicate \"$predicate\", ".
         "because it was the null string.  If you wish to seach ".
         "for the empty string, you must use ''.");
       return FALSE;
     }

The error occurs when I try to use xpath.class.php  with government example 
in this case searching for Gerhard::

phpXML error: While parsing an XPath expression there was an error in the 
predicate "Gerhard", because it was the null string. If you wish to seach 
for the empty string, you must use ''.

Question
===========
How can the string "Gerhard" be a "null string" ???

Luc

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[phpXML] Need example for 'context'

[<tom...@di...>]

Hello all,

I need a very specific example for the use of  'context'  in the original 
distro examples.

What are inputs that show a highlighted result ?
"XPath Expression:"
"XPath Context:"

E.g. what input for each field in the form testsuite.php (processing the 
'government.xml' file)

Whaterver combination I use (just one example)
Example (my entries)
XPath Expression:  //prename	
XPath Context:      /government/person
- I get no result highlighted

Many thanks,
Tom


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[phpXML] a few questions

[<nig...@us...>]

> Is it possible to count the number of nodes matching a certain
> pattern...

Call evaluate(), then count the entires in the array of XPath addresses
returned.

> is it possible to retrieve the contents of a search...like
> take a chunk out of the xml data to store in another variable or
> object...

Currently no, but I think the print_as_xml() function will be expanded in
the future to allow you to print part of the xml file.  I think someone may
have already written this but I don't have the source.

> so that you can then get subsets of that in later calls.
> Perhaps I could contact you a few times to get started on writing my
> first application with your parser so that I can be off and running?

Nothing is stopping you from mailing us.  There is nothing binding us to
answer though ;o)

> My second question is, what is the status of development on the
> project...are you working on Xpath more or are you beginning to focus on
> other aspect of the xml?

Yes.  It's still very much in development.
http://www.sourceforge.net/projects/phpxmldb has the latest version,
currently 1.N.4.  You'll find change log and outstanding issues there too.
You'll also find links to the archive for this list held at
www.geocrawler.com

Nigel

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[phpXML] miss-match

[<rot...@ne...>]

How can I get around phpXML's tendency to place tags inside regular text
after the tag containing the text.
 i.e.,
    <blah1>
            Text<blah2>more</blah2>text.
    </blah>
Comes out

Text text.more


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[phpXML] Other projects around phpXML...

[<nig...@us...>]

>     I recently entered the phpXML forum and I would like to know which
> projects are there under development that have as base object the phpXML
> object. Is anybody working on XSLT? DTD's? Schemas?
>     I also made some very simple changes to some functions inside the
phpXML
> object, so now you can use strings to create the XML object and also get a
> string representation in order to be able to save it to a DB. If anyone is
> interested in the code, just ask for it

Welcome to Phpxml :o)  Follow the link below, you'll find a version 1.N.5,
and an archive with 300 ish messages that have been sent to this list since
it's creation.  I think you'll be pleased with what you find.  Get the
version from CVS, not from the download, as 1.N.5 was very buggy... :o(

I believe there are at least 3 projects that stem from this work, namely
phpxmldb (xml database), a user manager I'm not sure of the project name of,
and there's some other project too that is also listed at sourceforge.  Do a
search for phpxml at sourceforge and you'll find them.

Nigel

===========================
For the most recent version of phpxml, V1.N.X, and an archive of this list
visit:  http://www.sourceforge.net/projects/phpxmldb


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[phpXML] [HELP !] Feeding phpxml with a string instead of a file ?

[<lu...@sa...>]

Hello,

void XML ([string $file])  loads a file.

How to process a XML stream coming from another processing ?

I need to do something like :

$file = 'foo.xml';
$xml_data = $tpl->fetch($file);
$xml = new XML($xml_data);

But this fails... I don't find in the doc a constructor taking a XML file 
as a string as argument.

Thanks in advance

Luc


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[phpXML] Dealing with HTML entities

[<lu...@sa...>]

Hello,

With xml.php to have a correct rendering of HTML enclosed in XML tags (in CDATA 
sections) the array entities () might be emptied. If it was not the case the 
HTML entities where converted and then displayed by the browser in their 
literal form.

It seem to be the same with xpath.class.php

I’m not in front of my development computer so I can’t check the 
xpath.class.php but the result shows that the behavior is the same.

Instead of letting the user empty the array containing entities to translate, 
perhaps it would be a good thing to have a property to set (TRUE or FALSE) 
depending the behavior we need/want.


To go back to my test bed site :-)

In the following example both the paragraph displayed in the center of the 
screen and the contextual menu in the left block came form the same XML file.

Here is the xml.php version with entities() emptied :
http://www.interpasnet.com/xmlprocess.php?
screen=cvs&section=wincvs&file=cvs.xml&id=1
HTML rendering is OK

Here is the xpath.class.php version
http://www.interpasnet.com/xmlprocess.xpath.php?
screen=cvs&section=wincvs&file=cvs.xml&id=1
HTML entities contained in CDATA sections are converted so the browser displays 
them in their literal form


Luc

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[phpXML] [phpXML] I did some modifications...

[<flo...@co...>]

I did some modifications to the phpxml librarie v1.0, as I have
discovered a minor bug and missing some feature I needed.

For more details see http://www.kzar.net/testxml.php

First, now you can do a XPath expression like this one:

//document/keyword[contains(text(),'some text')]/parents::*

Formerly, this expression did an error as the lib guess that it was a
XPtah function like "contains(text()" because of fails inclusive
parenthesis detection (sorry for my poor english...)

I also added a new method: count_nodes($path) that returns numbers of
elements within the path.
e.g. you can do:

$nodes =3D $xml->count_nodes("/document[$j]/keyword");
for($i=3D1; $i<=3Dnodes; $i++)
	echo "Keyword =3D
".$xml->get_content("/document[1]/keyword[$i]")."<br>";

This way you don't evaluate a path like that :

$test =3D $xml->evaluate("//document[$j]/keyword);
foreach($test as $node)
	echo "Keyword =3D ".$xml->get_content($test)."<br>";

This is usefull and time execution saving as you don't have to evaluate
again a path.

Any comments and suggestions are welcome.


I have a question: is phplib found on the www.phpxml.org site is
uptodate?

Thank's!



Florent Gilles
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[phpXML] Re: [phpXML] AW: [phpXML] get_file() function

[<nig...@us...>]

> > I am relatively new to the XML realm but have some good
> > experience with PHP.
> > I was wondering if anyone could send a code sample of a simple use of
the
> > get_file() function used as follows:
> >
> > 1.  Read in XML and write out the contents to a new XML document.  I am
> > really just look for the behavior of the function.
> > 2.  Using a form to submit data, formatting that based on a coded
template
> > in XML string and writing out to file.
> >
> > If anyone has some code samples of this, I would greatly
> > appreciate viewing
> > them.
> >
> > Thank you,
> >
> > Robby
> >

If you are new to phpxml, then the very first thing you should do is get
V1.N.4 from the below link.  Otherwise you'll just end up finding all the
bugs we found in the last 3 months.

Also phpxmldb will give you examples of quite a lot of the calls, and
there's quite good debugging to be found too.

V1.0 won't do a very good job of read in and write back out to another XML
file, but V1.N.4 will.

Nigel

===========================
For the most recent version of phpxml, V1.N.X, and an archive of this list
visit:  http://www.sourceforge.net/projects/phpxmldb


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[phpXML] RE: [phpXML]

[<le...@en...>]

It should work with Windows NT too. It doesn't matter.

The problem is something else...

Dejan


______________________________
Dejan Lekic
developer, MySQL DBA, sysadmin
http://dl.9mb.net

[phpXML] RE: [phpXML] [Fwd: Just a very small quick hack]

[<le...@en...>]

Finally someone that's sending DIFFs :)

Best regards to all!

______________________________
Dejan Lekic
developer, MySQL DBA, sysadmin
http://dl.9mb.net

[phpXML] Re: [phpXML] Re: Basic question about xpath.class.php use

[<nig...@us...>]

> I'm not sure the problem lies in my XML files, I think it lies in the way
I
> didn't modify my php file.

Didn't think it did.  Was trying to recreate the problem on my local
machine.

> At : http://www.interpasnet.com/1.N.5/examples/government/index.php
> You'll find Michael P. Mehl. government example with only two changes :
> 1) call to (include) php file xplath.class.php instead of xml.php
> 2) call to class XPath instead of XML (like in $xml = new XPath($file);)
>
> try it with for example the key word "Gerhard"
>
> The result is the same :
> phpXML error: While parsing an XPath expression there was an error in the
> predicate "Gerhard", because it was the null string. If you wish to seach
> for the empty string, you must use ''.

Fails at your site, I go through the same procedure on my own PC and it
works.  Sounds like either an OS issue, or a implementation issue of PHP.
As I can't recreate this error yet, I can't fix it, and it's going to be
difficult for me to recreate this one, you might have to try to fix this
yourself I'm afraid :o(

If anyone has ideas, or experiences the same issue, please let us all know.

Nigel

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[phpXML] [BUG] Quote removal

[<jb....@ca...>]

Hi!

I like  <phpXml/>.  It's a  great class, I use  it because expat  is not
installed on my company's web server.

Is there a mailing-list, forum,  ChangeLog, anything available?  The web
site lacks information :(

I noticed strange things (bugs IMHO):

/item[@id='']  does not  work because  xml.php removes  all quotes  thus
breaking the predicate meaning.

/item[@id='03-2001'] does  not work  because xml.php removes  all quotes
thus breaking the  predicate meaning: left hand  expression evaluates to
03-2001 whereas right hand expression evaluates to -1998...

Is it easily (self-)fixable?  Is it a known issue?

TIA
-- 
Jean-Baptiste Quenot

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[phpXML] <blah>0</blah>

[<jw...@sh...>]

Hi,

Two questions:

1. If I want a node like this: <blah>0</blah>, why it becomes <blah/> ? "0"
is definately content imho...
2. I was thinking to use <phpxml/> for creating some kind of cache file
between a MySQL databse and a GUI, but now I read deleting nodes is very
slow. This worries me. Would it be faster to completely regenerate an XML
tree of about 50K from a MySQL database every time than to keep the XML file
and delete nodes to keep the cache size limited to 50K?

JW


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[phpXML] Re: [phpXML] [phpXML] I did some modifications...

[<nig...@us...>]

>First, now you can do a XPath expression like this one:
>
>file://document/keyword[contains(text(),'some text')]/parents::*
>
>Formerly, this expression did an error as the lib guess that it was a
>XPtah function like "contains(text()" because of fails inclusive
>parenthesis detection (sorry for my poor english...)

I think this bug was fixed in 1.N.4

>I also added a new method: count_nodes($path) that returns numbers of
>elements within the path.
>e.g. you can do:
<snip>
>This is usefull and time execution saving as you don't have to evaluate
>again a path.

Yip.  Execution speed is currently crippling this project.  Dietrich has
done some really interesting work that uses regexes to speed up the
evaluate() as opposed to all the horrid recursion that it currently does.
I'm currently in discussion with him to see if we can merge the xmltree and
phpxml projects so that we can take advantage of the speed increases that he
has made.

> I have a question: is phplib found on the www.phpxml.org site is
> uptodate?

No.  The one at the http://sourceforge.net/projects/phpxmldb is more
uptodate.

Nigel

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[phpXML] RE: [phpXML] Design questions...

[<le...@en...>]

Go immediately over

http://www.w3.org


______________________________
Dejan Lekic
developer, MySQL DBA, sysadmin
http://dl.9mb.net

[phpXML] Re: [phpXML] parsing large files -- memory ?

[<a.t...@fl...>]

Hi,

> : Allowed memory size of 8388608 bytes exhausted (tried to
allocate 35
> bytes) in

You should change this value in your php.ini file.

HTH,

Axel Tietje
--
FLYnet     FLYer Kommunikationsgesellschaft mbH
Weender Landstr. 46 37073 Göttingen 0551-499750
http://www.flynet.de         a.t...@fl...


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[phpXML] bugs with character entities?

[<yf...@co...>]

Hello,

I have the following in an XML file:

<title>DTD&apos;s &amp; schema</title>

Using <phpXML/>, I extract that string using get_content() and 
display it on a web page. For some reason, the spaces around the 
ampersand are removed.

Does someone have a fix for this? Any help would be really 
appreciated.

Also, there is a bug on line 125: "&apos" should be "&apos;". To 
make things more troublesome, it looks like Internet Explorer (at 
least mine!) doesn't recognize &apos; but will recognize &#39;.

Young

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[phpXML] Re: [phpXML] Basic question about xpath.class.php use

[<nig...@us...>]

> Error is :
> phpXML error: While parsing an XPath expression there was an error in the
> predicate "1", because it was the null string. If you wish to seach for
the
> empty string, you must use ''.

Try replacing line 1997 with:

    if (ereg('^[[:space:]]*$', $predicate))


it was:

    if (ereg('^\w*$', $predicate))


But I'm not sure if \w is trying to match a word, not whitespace.  I can't
find a useful posix reference, but I know that it should be \s in perl
regexes...

If you could hone down which evaluate() call makes this error, and perhaps
send a small subset of xml and evaluate call that makes the error, then we
can add a test to catch this error.  As such I haven't been able to
reproduce the error, and I'm forbidden to access
http://www.interpasnet.com/xml_files/cachecache/cachecache.xml directly.

Keep the bug reports rolling, it's looking like a 1.N.6 will be needed very
soon...

Nigel

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visit:  http://www.sourceforge.net/projects/phpxmldb

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[phpXML] RE: [phpXML] Re: [phpXML] RE: [phpXML] Subscription successful

[<sh...@co...>]

Thanks, my question has been answered and I have
it working now!!


Amy Strycula, Creative Director
Coolshopping.com
http://www.coolshopping.com
http://www.coolshopping.tv
(412) 366-7545   voice
(412) 366-8528   fax 



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[phpXML] SKIP WHITE

[<fra...@vi...>]

 DOes somebody know why does when I put a 0 instead of 1 in the
XML_OPTION_SKIP_WHITE in the xml_parser_set_option it still skip white?
IN the xml.php file?

 xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 0); 

An other thing why do we need /test[1] shouldn't it be /test? For 
<test>untest</test>

-- 
Francis Fillion, BAA SI
Broadcasting live from his linux box.
And the maintainer of http://www.windplanet.com

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[phpXML] Re: set_content

[<lu...@sa...>]

Hello Florent,

There is a documentation but not really complete as some fucntions have been 
added since v1.0 


Browsing old messages (is there somewhere an archive for the list by the 
way ??) you'll find some good tips for parsing.

regarding doc and examples the problem is more on the editing side..

Luc

En réponse à flo...@co...:

> Hi!
> 
> Is there any explicit documentation about phpxml, 
> with some usefull exemples?
> 
> Thank's!

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[phpXML] Re: [phpXML] Before 1N6

[<lu...@sa...>]

At 11:39 26/09/01 +0000, lu...@sa... wrote:
>Nigel,
>
>Before releasing 1N6 it would be a Good Thing (tm) to release a 1N5-style
>version of original examples (government for example) to avoid the zillions
>of question I have about : "how does this new way of Xpath.class.php-ing
>work ???"
>
>Luc

Or if you don't have enough time, just tell me what is now the right 
version of this code that worked with xml.php/1N4 :

<buddy_list>
     <buddy id="1">
         <lastname>Doe</lastname>
         <firstname>John</firstname>
         <isniceguy>Yes</isniceguy>
    </buddy>
</buddy_list>

$myatrributesarray = array();
$listofmybuddies = $xml->evaluate('/buddy_list/buddy');
foreach ( $listofmybuddies as $buddy )
{
     $myatrributesarray  = $xml->get_attributes($buddy);
     $id                 = $myatrributesarray['id']
     $firstname        = $xml->get_attributes($buddy ."/firstname[1]");
     $lastname          = $xml->get_content($buddy ."/lastname[1]");
     $isniceguy         = $xml->get_content($buddy ."/isniceguy[1]");
}

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[phpXML] Re: set_content

[<lu...@sa...>]

Hello,

I second this request, having done part of my site with phpxml using parsing 
fucntion, I'm now going to do the admin part.. and that's not really easy.

Luc

En réponse à jan...@im...:

> Hi!
> 
> I am looking for an working example of set_content or 
> other edit xml functions.
> Reading/Parsing is no problem - but my script does 
> not like to edit my xml file :(
> 
> Thanks for help!!!
> 
> 	Jan

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