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07.14.2008 at 12:01PM PDT, ID: 23563786
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8.6

What's the best way to handle this?  Working with DOM XPath parsing XML...

Asked by angelleye in PHP Scripting Language

Tags:

I'm working with XML DOM and XPath to parse specific values out of XML data.  When I began my little project I had everything setup like you see at the bottom of my code snippet where I'm simply loading the session variable on a single line and that's it.

What I discovered with this method is that if by chance an element doesn't come back (Address2 is a frequent one) then PHP returns a Notice message that I was trying to load a non existing element.  Of course, that's just a notice, and the code continues to run just fine.

I began to fix the possible notice(s) by changing it to the way you see at the top of my code where I'm loading the element into an object so I can then check the length to see if it exists and only load the variable if it does indeed exist.  

This solves the problem of seeing Notices on the screen, but then I started wondering how much longer this will take my code to run having to go through all these if/else checks vs. simply loading the value.

Would I be better off leaving it the way I had it and turning down the error message settings on my live server so that Notices don't get shown, or should I go ahead and fix my code to avoid all possible Notices and Warnings in cases like this?

Any information would be greatly appreciated.  Thanks!Start Free Trial 
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$BuyerStreet1 = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:Street1/text()");
if($BuyerStreet1 -> length > 0)
	$_SESSION['BuyerStreet1'] = $BuyerStreet1 -> item(0) -> data;
else
	$_SESSION['BuyerStreet1'] = '';
	
$BuyerStreet2 = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:Street2/text()");
if($BuyerStreet2 -> length > 0)
	$_SESSION['BuyerStreet2'] = $BuyerStreet2 -> item(0) -> data;
else
	$_SESSION['BuyerStreet2'] = '';
	
$BuyerCityName = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:CityName/text()");
if($BuyerCityName -> length > 0)
	$_SESSION['BuyerCityName'] = $BuyerCityName -> item(0) -> data;
else
	$_SESSION['BuyerCityName'] = '';
 
$_SESSION['BuyerStateOrProvince'] = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:StateOrProvince/text()") -> item(0) -> data;
$_SESSION['BuyerPostalCode'] = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:PostalCode/text()") -> item(0) -> data;
$_SESSION['BuyerCountry'] = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:CountryName/text()") -> item(0) -> data;
$_SESSION['BuyerPhoneNumber'] = $eBayItemDataXPath -> query("/ns:GetItemTransactionsResponse/ns:TransactionArray/ns:Transaction/ns:Buyer/ns:BuyerInfo/ns:ShippingAddress/ns:Phone/text()") -> item(0) -> data;
[+][-]07.14.2008 at 12:08PM PDT, ID: 22001009

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[+][-]07.14.2008 at 12:29PM PDT, ID: 22001205

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[+][-]07.14.2008 at 12:33PM PDT, ID: 22001258

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[+][-]07.14.2008 at 12:38PM PDT, ID: 22001312

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[+][-]07.14.2008 at 12:41PM PDT, ID: 22001352

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[+][-]07.14.2008 at 12:49PM PDT, ID: 22001424

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[+][-]07.14.2008 at 02:14PM PDT, ID: 22002196

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About this solution

Zone: PHP Scripting Language
Tags: PHP
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Solution Provided By: Ray_Paseur
Participating Experts: 1
Solution Grade: A
 
 
 
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