The XMLWriter::startAttributeNs() function is an inbuilt function in PHP which is used to start namespaced attribute. This attribute can be later closed with XMLWriter::endAttribute() function. Usually styling web pages doesn’t works in a namespace attribute.
Syntax:
bool XMLWriter::startAttributeNs( string $prefix, string $name, string $uri )
Parameters: This function accepts three parameters as mentioned above and described below:
- $prefix: It specifies the prefix for the namespace.
- $name: It specifies the name for the namespace.
- $uri: It specifies the value for the namespace.
Return Value: This function returns TRUE on success or FALSE on failure.
Below examples illustrate the XMLWriter::startAttributeNs() function in PHP:
Example 1:
<?php // Create a new XMLWriter instance $writer = new XMLWriter(); // Create the output stream as PHP // Start the document $writer->startDocument('1.0', 'UTF-8'); // Start a element $writer->startElement('div'); // Start the namespaced attribute $writer->startAttributeNs('pre', 'attrib', 'value'); // Add value to the attribute $writer->text('value'); // End the attribute $writer->endAttribute(); // End the element $writer->endElement(); // End the document $writer->endDocument(); ?> |
Output:
<?xml version="1.0" encoding="UTF-8"?> <div pre:attrib="value" xmlns:pre="value"/>
Example 2:
<?php // Create a new XMLWriter instance $writer = new XMLWriter(); // Create the output stream as PHP // Start the document $writer->startDocument('1.0', 'UTF-8'); // Start a element $writer->startElement('div'); // Start the namespaced attribute with style attribute // This will not work because it is namespaced $writer->startAttributeNs('style', 'attrib', 'value'); // Add value to the attribute $writer->text('color:blue'); // End the attribute $writer->endAttribute(); // Add value to the element $writer->text('Namespaced neveropen'); // End the element $writer->endElement(); // Start a h1 element $writer->startElement('h1'); // Start the style attribute $writer->startAttribute('style'); // Add value to the attribute $writer->text('color:green'); // End the attribute $writer->endAttribute(); // Add value to the element $writer->text('Normal neveropen'); // End the element $writer->endElement(); // End the document $writer->endDocument(); ?> |
Output:
Reference: https://www.php.net/manual/en/function.xmlwriter-start-attribute-ns.php
