How does an XML parser work in PHP?

How does an XML parser work in PHP?

An XML Parser is a program that translates XML an XML document into a DOM tree-structure like document. CDATA is used to ignore special characters when parsing XML documents. PHP uses the simplexml_load_file to read XML documents and return the results as a numeric array PHP DOMDocument class to create XML files.

How to load employees.xml file in PHP?

“$xml = simplexml_load_file (’employees.xml’);” uses the simplexml_load_file function to load the file name employees.xml and assign the contents to the array variable $xml. “$list = $xml->record;” gets the contents of the record node.

How to parse a PHP file in JavaScript?

You can use the DOMDocument from PHP. You load your file and than loop trough the childNodes of the document. To do this parsing in JavaScript you should use jQuery (a small, but powerful library). You can include the library directly from Google Code Repository. The library is cross-browser and very small.

How is XML format used in web services?

Web services such as SOAP and REST use XML format to exchange information. Learning what XML is and how it works will get you competitive advantage as a developer since modern applications make heavy use of web services. It allows you to create your own custom tags which make it more flexible.

Is it possible to use special characters in XML?

Because XML syntax uses some characters for tags and attributes it is not possible to directly use those characters inside XML tags or attribute values. To include special characters inside XML files you must use the numeric character reference instead of that character.

Why do I need to escape control characters in XML?

Adding control characters (‘<‘, ‘>’, ”’, ‘”‘, ‘&’) into xml data can cause the parser to miss understand the resulting data. The solution is to escape the control characters so that the parser can interpret them correctly as data, and not confuse them for markup.

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