[PHP] XPath Query Exressions and Quote Characters
I've got a problem with quote characters and building XPath query expressions (PHP 5.0.3). What do I need to do to get them to work? I've tried various encoding functions but cannot figure it out. Given this expression, if $id contains one or more double quotes, an error is thrown. $query = '//book/chapter' . '[EMAIL PROTECTED]:id="' . $id . '"]'; Given this expression, if $id contains one or more single quotes, an error is thrown. $query = "//book/[EMAIL PROTECTED]:id='$id']"; I need to be able to build an exression that contains either double or single quotes in the search regarding of how I programatically build the expression. Any insight would be appreciated. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: XPath Query Exressions and Quote Characters
It's just a coincidence that I used xml:id as part of my query
expression. If I use following code method to build my expression:
$query = '//book/chapter[section="' . $section . '"]';
or say
$query = '//book/[EMAIL PROTECTED]"' . $title . '"]';
I get an "Invalid Predicate..." error when either the $section or
$title variable contains a double quote.
However, here's an example:
XML:
home
1
"Home"
XPath Expression:
$query = '//table/row[mod_name="' . $name . '"]';
Variable Assignment:
$name = utf_encode('"Home"');
Using the expression throws the "Invalid Predicate" Error.
On 2005-03-16 12:06:24 -0500, [EMAIL PROTECTED] (Jason Barnett) said:
C Drozdowski wrote:
...
$query = '//book/chapter' . '[EMAIL PROTECTED]:id="' . $id . '"]';
First of all check the XPath documentation:
http://www.w3.org/TR/xpath
http://www.w3.org/TR/xpath#path-abbrev
AFAIK your expression above is the way to build this query. Give us a
link to the XML doc if you want us to take a look at that specific doc.
Also make sure you referenced the correct DTD. And (just to be sure)
try to validate you document against the DTD.
Given this expression, if $id contains one or more single quotes, an
error is thrown.
$query = "//book/[EMAIL PROTECTED]:id='$id']";
I need to be able to build an exression that contains either double or
single quotes in the search regarding of how I programatically build the
expression.
A couple of things that may be in play here...
- First of all I recall there was a specific bug with xml:id, although I
can't recall off the top of my head what it was...
- Secondly the XPath querying interface in PHP will only return simple
data at this point. In fact, I think it will only return strings.
http://www.w3.org/TR/xpath#attribute-nodes
But if your ID is simple data (integer / string), I can't imagine it
would be a problem for XPath to return it.
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[PHP] PHP 5 DOM, XPath, UTF-8, and Form Input
I have been doing some testing and need confirmation that the following is correct. You have a DOMDocument that potentially contains UTF-8 encoded data (it might not however). You want to search it via DOMXpath->query() using a value that comes from a $_POST value. If the page that posts the data via a form to the search script IS NOT encoded in UTF-8, then the value must be converted to UTF-8 before it is used in the query expression. Else, if the posting page IS UTF-8 encoded, then the $_POST data does not need to be converted before being used in the expression. Is this correct? Also, if the $_POST data comes from a UTF-8 encoded page, and it needs to be sanitized before use, will the basic PHP string functions work on the data (e.g. htmlentities, stripslashes, trim, preg_replace, etc)? If not what do I have to do? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
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I'd like to be able to "timeout" a user if they are inactive for X
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Is there any reason that using the header() function as below wouldn't
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[PHP] Why do I have to declare __set if I declare __get for read-only properties?
Howdy,
I'd like to access some of the private members of my classes as
read-only properties without resorting to function calls to access
them. (e.g. $testClass->privateMember instead of
$testClass->privateMember(), etc)
Based on my research and testing, using the __get and __set overloading
methods appears to be the only way to do so. It also, based on testing,
appears that these private members must be in an array.
What I do not understand is that if I declare a __get method I MUST
also declare a "do nothing" __set method to prevent the read-only
properties from being modified in code that uses the class.
For example, the code below allows me to have read-only properties.
However, if I remove the "do nothing" __set method completely, then the
properties are no longer read-only.
I'm curious as to why I HAVE to implement the __set method?
Example:
class testClass
{
private $varArray = array('one'=>'ONE', 'two'=>'TWO');
public function __get($name)
{
if (array_key_exists($name, $this->varArray)) {
return $this->varArray[$name];
}
}
public function __set($name, $value)
{
}
}
$test = new testClass();
$test->one = 'TWO'; // doesn't work
echo $test->one; // echo s 'ONE'
?>
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I need to be able to store UTF-8 characters from a form into a MySQL table. But I need to support pre-UTF-8 MySQL (< 4.1). So I'm converting UTF-8 characters into their numeric entities (e.g. ñ = ñ). The problem is that if the user enters a character that gets converted to an entity, the string might end up being longer than the field definition in the table allows. For example, if I have a varchar(5) column and try to insert "señor" (which has been converted to "senñor"), I get "sen&#" in the table which is useless. Has anyone dealt with this and if so how? Thanks in advance for any advice, or pointers to any code that deals with this. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
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I'm using Exceptions and variously handling them in try..catch blocks
or defaulting to my set_exception_handler handler.
When I create an Exception I'd like to prepend the class of the
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hard code the name of the Exception class into the message every time I
throw the exception?
For Example:
I'd like to turn this...
throw new myException("myException: So this is it, we're going to die");
into...
throw new myException( CODE . ": So this is it, we're going to die");
where CODE is some php code that refers to the class of the exception
being thrown.
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[PHP] PHP Source File Encoding
Gotta a question whose answer should be really obvious to me but, for some reason, is just eluding me. Which encodings can PHP handle for source files? I've been using iso-8859-1 but what about utf-8? Thanks, C Drozdowski -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
