(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL xmlwriter >= 0.1.0)
XMLWriter::startElementNs -- xmlwriter_start_element_ns — Create start namespaced element tag
Object-oriented style
Procedural style
$writer,$prefix,$name,$namespaceStarts a namespaced element.
writerOnly for procedural calls. The XMLWriter instance that is being modified. This object is returned from a call to xmlwriter_open_uri() or xmlwriter_open_memory().
prefix
       The namespace prefix.
       If prefix is null, the namespace will be omitted.
      
nameThe element name.
namespace
       The namespace URI.
       If namespace is null, the namespace declaration will be
       omitted.
      
| Version | Description | 
|---|---|
| 8.0.0 | writerexpects an XMLWriter
  instance now; previously, a resource was expected. | 
