PHP XMLWriter::writePi方法代碼示例

 private function writeReaderImpl(XMLWriter $writer, XMLReader $reader)
 {
     switch ($reader->nodeType) {
         case XMLReader::ELEMENT:
             $writer->startElement($reader->name);
             if ($reader->moveToFirstAttribute()) {
                 do {
                     $writer->writeAttribute($reader->name, $reader->value);
                 } while ($reader->moveToNextAttribute());
                 $reader->moveToElement();
             }
             if ($reader->isEmptyElement) {
                 $writer->endElement();
             }
             break;
         case XMLReader::END_ELEMENT:
             $writer->endElement();
             break;
         case XMLReader::COMMENT:
             $writer->writeComment($reader->value);
             break;
         case XMLReader::SIGNIFICANT_WHITESPACE:
         case XMLReader::TEXT:
             $writer->text($reader->value);
             break;
         case XMLReader::PI:
             $writer->writePi($reader->name, $reader->value);
             break;
         default:
             XMLReaderNode::dump($reader);
     }
 }

 /**
  * @return \XMLWriter
  */
 public function getObject()
 {
     $xmlWriter = new \XMLWriter();
     $xmlWriter->openMemory();
     $xmlWriter->startDocument('1.0', 'UTF-8');
     $xmlWriter->setIndent(true);
     $xmlWriter->writePi('xml-stylesheet', 'type="text/xsl" href="./sitemap_css.xsl"');
     $xmlWriter->startElement('sitemapindex');
     $xmlWriter->writeAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');
     return $xmlWriter;
 }

 /**
  * @return \XMLWriter
  */
 public function getObject()
 {
     $xmlWriter = new \XMLWriter();
     $xmlWriter->openMemory();
     $xmlWriter->startDocument('1.0', 'UTF-8');
     $xmlWriter->setIndent(true);
     $xmlWriter->writePi('xml-stylesheet', 'type="text/xsl" href="./sitemap_css.xsl"');
     $xmlWriter->startElement('urlset');
     $xmlWriter->writeAttribute('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
     $xmlWriter->writeAttribute('xmlns:image', 'http://www.google.com/schemas/sitemap-image/1.1');
     $xmlWriter->writeAttribute('xsi:schemaLocation', 'http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd');
     $xmlWriter->writeAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');
     return $xmlWriter;
 }

 /**
  * Creates an XML tree of the view data.
  * @param array $data Array of keys and values to be interpreted.
  * @param string $xslt <b>Optional</b>. Path of the XSL template.
  * @param boolean $iscompressed <b>Optional</b>. compresses the output if <b>TRUE</b>.
  */
 public function build($data, $xslt = null, $iscompressed = true)
 {
     $xml = new XMLWriter();
     $xml->openMemory();
     $xml->setIndent(true);
     $xml->setIndentString(' ');
     $xml->startDocument('1.0', 'UTF-8');
     if (!empty($xslt)) {
         $xml->writePi('xml-stylesheet', "type=\"text/xsl\" href=\"{$xslt}\"");
     }
     $xml->startElement('root');
     $this->fromArray($xml, $data);
     $xml->endDocument();
     $contents_x = $xml->outputMemory();
     return !$iscompressed ? $contents_x : $this->xmlCompress($contents_x);
 }

<?php

/* $Id$ */
/*
Libxml 2.6.24 and up adds a new line after a processing instruction (PI)
*/
$xw = new XMLWriter();
$xw->openMemory();
$xw->setIndent(TRUE);
$xw->startDocument("1.0", "UTF-8");
$xw->startElement('root');
$xw->writeAttribute('id', 'elem1');
$xw->startElement('elem1');
$xw->writeAttribute('attr1', 'first');
$xw->writeComment('start PI');
$xw->startElement('pi');
$xw->writePi('php', 'echo "hello world"; ');
$xw->endElement();
$xw->startElement('cdata');
$xw->startCdata();
$xw->text('<>&"');
$xw->endCdata();
$xw->endElement();
$xw->endElement();
$xw->endElement();
$xw->endDocument();
// Force to write and empty the buffer
$output = $xw->flush(true);
print $output;

 /**
  * Writes Google sitemap index for generated sitemap files
  *
  * @param string $loc Accessible URL path of sitemaps
  * @param string|int $lastmod The date of last modification of sitemap. Unix timestamp or any English textual datetime description.
  */
 public function createSitemapIndex($loc, $lastmod = 'Today')
 {
     $this->endSitemap();
     $indexwriter = new \XMLWriter();
     $indexwriter->openURI($this->getPath() . $this->getFilename() . self::SEPERATOR . self::INDEX_SUFFIX . self::EXT);
     $indexwriter->startDocument('1.0', 'UTF-8');
     $indexwriter->setIndent(true);
     if ($this->getStyle() != '') {
         $indexwriter->writePi('xml-stylesheet', 'type="text/xsl" href="' . $this->getStyle() . '"');
     }
     $indexwriter->startElement('sitemapindex');
     $indexwriter->writeAttribute('xmlns', self::SCHEMA);
     for ($index = 0; $index < $this->getCurrentSitemap(); $index++) {
         $indexwriter->startElement('sitemap');
         $indexwriter->writeElement('loc', $loc . $this->getFilename() . ($index ? self::SEPERATOR . $index : '') . self::EXT);
         $indexwriter->writeElement('lastmod', $this->getLastModifiedDate($lastmod));
         $indexwriter->endElement();
     }
     $indexwriter->endElement();
     $indexwriter->endDocument();
 }

    }
    function handlePostBack()
    {
        if (isset($_POST[$this->name])) {
            $this->value = $_POST[$this->name];
        }
    }
    function render($writer)
    {
        parent::render($writer);
        $writer->startElement('input');
        $writer->writeAttribute('type', 'text');
        $writer->writeAttribute('name', $this->name);
        $writer->writeAttribute('value', $this->value);
        $writer->endElement();
    }
}
//////////////////////////////////////
header('Content-type: text/xml');
$writer = new XMLWriter();
$writer->openURI('php://output');
$writer->startDocument('1.0');
$writer->setIndent(4);
$writer->writePi('xml-stylesheet', 'type="text/xsl" href="template.xsl"');
$controller = new PageVersionEditController();
if (isPostBack()) {
    $controller->handlePostBack();
}
$controller->view->render($writer);
$writer->endDocument();
$writer->flush();

* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB')) {
    exit;
}
$xml = new XMLWriter();
$xml->openMemory();
$xml->setIndent(true);
$xml->setIndentString("\t");
// The header
$xml->startDocument('1.0', 'UTF-8', 'yes');
$xml->writePi('xml-stylesheet', 'type="text/xsl" href="' . (!empty($preview) ? $phpbb_root_path . 'modx_files/' : '') . 'modx.prosilver.en.xsl"');
$xml->writeComment('NOTICE: Please open this file in your web browser. If presented with a security warning, you may safely tell it to allow the blocked content.');
$xml->writeComment('For security purposes, please check: http://www.phpbb.com/mods/ for the latest version of this MOD.\\nAlthough MODs are checked before being allowed in the MODs Database there is no guarantee that there are no security problems within the MOD.\\nNo support will be given for MODs not found within the MODs Database which can be found at http://www.phpbb.com/mods/');
// <mod>
$xml->startElement('mod');
$xml->writeAttribute('xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
$xml->writeAttribute('xmlns', 'https://www.phpbb.com/mods/xml/' . MODX_LATEST);
// <header>
$xml->startElement('header');
// Need to reset the counters.
$parser->modx_reset();
// <meta>
// Start with the own meta tag
write_element('meta', '', array('name' => 'generator', 'content' => META), false, false);
while ($meta = $parser->get_modx_meta()) {
    write_element('meta', '', array('name' => $meta['name'], 'content' => $meta['content']), false, false);