(PHP 5 >= 5.1.2, PHP 7, PECL xmlwriter >= 0.1.0)
XMLWriter::startPi -- xmlwriter_start_pi — Create start PI tag
Object oriented style
public XMLWriter::startPi ( string $target ) : bool
Procedural style
xmlwriter_start_pi ( XMLWriter $writer , string $target ) : bool
Starts a processing instruction tag.
writer
Only 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().
target
The target of the processing instruction.
 Returns true on success or false on failure. 
| Version | Description | 
|---|---|
| 8.0.0 |  writer expects an XMLWriter instance now; previously, a resource was expected.  |  
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    https://www.php.net/manual/en/function.xmlwriter-start-pi.php