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Your phpinfo() results should be examined for initial configuration troubleshooting.
PHP samples listed on the eBay Developers Program web site require various PHP XML libraries to be enabled in your PHP installation. Here’s how to check your PHP configuration.
PHP configuration information can be obtained at the command line with :
$ php -i phpinfo() PHP Version => 5.1.2 System => Linux 22.214.171.124-xenU #3 SMP Mon Jan 1 03:55:34 CST 2007 i686 Build Date => Apr 3 2006 19:25:41 ....
<?php phpinfo(); ?>
What is the best way to parse XML with PHP?