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 GeeksforGeeks' );
// 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 GeeksforGeeks' );
// End the element $writer ->endElement();
// End the document $writer ->endDocument();
?> |
Output: