DOMDocument::saveHTML

(PHP 5, PHP 7)

DOMDocument::saveHTML — Dumps the internal document into a string using HTML formatting

说明

public string DOMDocument::saveHTML ([ DOMNode $node = NULL ] )

Creates an HTML document from the DOM representation. This function is usually called after building a new dom document from scratch as in the example below.

参数

node: Optional parameter to output a subset of the document.

返回值

Returns the HTML, or FALSE if an error occurred.

更新日志

版本	说明
5.3.6	The `node` parameter was added.

范例

Example #1 Saving a HTML tree into a string

  <?php

$doc  = new  DOMDocument ( '1.0' );

 $root  =  $doc -> createElement ( 'html' );
 $root  =  $doc -> appendChild ( $root );

 $head  =  $doc -> createElement ( 'head' );
 $head  =  $root -> appendChild ( $head );

 $title  =  $doc -> createElement ( 'title' );
 $title  =  $head -> appendChild ( $title );

 $text  =  $doc -> createTextNode ( 'This is the title' );
 $text  =  $title -> appendChild ( $text );

echo  $doc -> saveHTML ();

 ?>

参见

DOMDocument::saveHTMLFile() - Dumps the internal document into a file using HTML formatting
DOMDocument::loadHTML() - Load HTML from a string
DOMDocument::loadHTMLFile() - Load HTML from a file

用户评论:

[#1] RiKdnUA at mail dot ru [2015-04-29 15:49:33]

Tested in PHP 5.2.9-2 and PHP 5.2.17.
saveHTML() ??????????? ????????? DOMDocument->encoding. ??????? saveHTML() ?????????? html-????????? ?? ??????????, ???????? ???????? ?? ????? <meta> ?????????? (?????????????) html-??????????.
saveHTML() ignores property DOMDocument->encoding. Method saveHTML() saves the html-document encoding, which is specified in the tag <meta> source (downloaded) html-document.
Example:
file.html. ??????????? ?????? ??????? ?????????? ?? ?????????? ?? ????? <meta>. The encoding of the file must match the specified tag <meta>.
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
<title>Russian language</title></head>
<body>????????? ??????</body></html>

<?php error_reporting(-1); $document=new domDocument('1.0', 'UTF-8'); $document->preserveWhiteSpace=false; $document->loadHTMLFile('file.html'); $document->formatOutput=true; $document->encoding='UTF-8'; $htm=$document->saveHTML(); echo"?????????? ?????. Recorded bytes: ".file_put_contents('file_new.html', $htm); ?>
file_new.html ?????? ?? ?????????? Windows-1251 (???? ?? UTF-8).
file_new.html will be encoded in Windows-1251 (not in UTF-8).

saveHTML() ?? file_put_contents() ?????????? ??????????? ??????????? ??????? saveHTMLFile().
?????????? ???? ???????????? ?? ??????? saveHTMLFile().
saveHTML() and file_put_contents() allows you to overcome the lack of a method saveHTMLFile().
See my comment on the method saveHTMLFile().
http://php.net/manual/ru/domdocument.savehtmlfile.php

[#2] qrworld.net [2014-11-11 16:34:39]

In this post http://softontherocks.blogspot.com/2014/11/descargar-el-contenido-de-una-url_11.html I found a simple way to get the content of a URL with DOMDocument, loadHTMLFile and saveHTML().

function getURLContent($url){
    $doc = new DOMDocument;
    $doc->preserveWhiteSpace = FALSE;
    @$doc->loadHTMLFile($url);
    return $doc->saveHTML();
}

[#3] alvaro at demogracia dot com [2011-03-29 11:04:18]

Since PHP/5.3.6, DOMDocument->saveHTML() accepts an optional DOMNode parameter similarly to DOMDocument->saveXML():

http://bugs.php.net/bug.php?id=39771

[#4] Yajo [2010-11-24 07:21:13]

Another way to workaround the <script/> problem is putting a semicolon (;) inside the script element.

[#5] Anonymous [2010-02-09 07:52:04]

If you want a simpler way to get around the <script> tag problem try:

<?php $script = $doc->createElement ('script');\ // Creating an empty text node forces <script></script> $script->appendChild ($doc->createTextNode ('')); $head->appendChild ($script); ?>

[#6] Anonymous [2009-05-12 19:35:54]

To avoid script tags from being output as <script />, you can use the DOMDocumentFragment class:

<?php $doc = new DOMDocument(); $doc -> loadXML($xmlstring); $fragment = $doc->createDocumentFragment(); /* Append the script element to the fragment using raw XML strings (will be preserved in their raw form) and if succesful proceed to insert it in the DOM tree */ if($fragment->appendXML("<script type='text/javascript' src='$source'></script>") { $xpath = new DOMXpath($doc); $resultlist = $xpath->query("//*[local-name() = 'html']/*[local-name() = 'head']"); /* namespace-safe method to find all head elements which are childs of the html element, should only return 1 match */ foreach($resultlist as $headnode) // insert the script tag $headnode->appendChild($fragment); } $doc->saveXML(); /* and our script tags will still be <script></script> */ ?>

[#7] Bart Feenstra [2009-01-18 10:17:23]

I am using this solution to prevent tags and the doctype from being added to the HTML string automatically:

<?php $html = '<h1>Hello world!</h1>'; $html = '<div>' . $html . '</div>'; $doc = new DOMDocument; $doc->loadHTML($html); echo substr($doc->saveXML($doc->getElementsByTagName('div')->item(0)), 5, -6) // Outputs: "<h1>Hello world!</h1>" ?>

[#8] m at hbblogs daught calm [2008-08-18 08:41:41]

This method, as of 5.2.6, will automatically add <html><body> and <!DOCTYPE> tags to the document if they are missing, without asking whether you want them. In my application, I needed to use the DOM methods to manipulate just a fragment of html, so these tags were rather unhelpful.

Here's a simple hack to remove them in case, like me, all you wanted to do was perform a few operations on an HTML fragment.

$html_fragment = preg_replace('/^<!DOCTYPE.+?>/', '', str_replace( array('<html>', '</html>', '<body>', '</body>'), array('', '', '', ''), $dom->saveHTML()));

[#9] Anonymous [2008-04-25 20:15:25]

<?php function getDOMString($retNode) { if (!$retNode) return null; $retval = strtr($retNode-->ownerDocument->saveXML($retNode), array( '></area>' => ' />', '></base>' => ' />', '></basefont>' => ' />', '></br>' => ' />', '></col>' => ' />', '></frame>' => ' />', '></hr>' => ' />', '></img>' => ' />', '></input>' => ' />', '></isindex>' => ' />', '></link>' => ' />', '></meta>' => ' />', '></param>' => ' />', 'default:' => '', // sometimes, you have to decode entities too... '"' => '"', '&' => '&', ''' => ''', '<' => '<', '>' => '>', ' ' => ' ', '©' => '©', '«' => '«', '®' => '®', '»' => '»', '™' => '™' )); return $retval; } ?>

[#10] mjaque at ilkebenson dot com [2008-02-19 11:34:37]

DOMDocument->saveXML() doesn't generate a proper XHTML format either.

There is a problem with "script" empty elements. For example:

This will be the code generated by saveXML, with an empty script tag.

<html>
  <head>
    <script type="text/JavaScript" src="myScript.js"/>
  </head>
  <body>
    <p>I will not appear</p>
    <script type="text/JavaScript">
alert("Not working");
    </script>
  </body>
</html>

I don't know if this is valid XHTML (W3C Validator doesn't complain), but both FF 2.0 and IE 6 will not render it properly. Both will use </script> as the closing tag for the first script causing js errors and ignoring in between elements.

You can post-process saveXML string in order to close empty tags with the following function:

<?php     function cerrarTag($tag, $xml){         $indice = 0;         while ($indice< strlen($xml)){             $pos = strpos($xml, "<$tag ", $indice);             if ($pos){                 $posCierre = strpos($xml, ">", $pos);                 if ($xml[$posCierre-1] == "/"){                     $xml = substr_replace($xml, "></$tag>", $posCierre-1, 2);                 }                 $indice = $posCierre;             }             else break;         }         return $xml;     } ?>

At least script and select empty elements should be closed. This example shows how it can be used:

<?php     define("CABECERA_XHTML", '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">');   $xhtml = $docXML->saveXML($docXML->documentElement);   $xhtml = cerrarTag("script", $xhtml);   $xhtml = cerrarTag("select", $xhtml);   $xhtml = CABECERA_XHTML."\n".$xhtml;   echo $xhtml; ?>

[#11] archanglmr at yahoo dot com [2007-11-27 15:28:44]

If created your DOMDocument object using loadHTML() (where the source is from another site) and want to pass your changes back to the browser you should make sure the HTTP Content-Type header matches your meta content-type tags value because modern browsers seem to ignore the meta tag and trust just the HTTP header. For example if you're reading an ISO-8859-1 document and your web server is claiming UTF-8 you need to correct it using the header() function.

<?php header('Content-Type: text/html; charset=iso-8859-1'); ?>

[#12] xoplqox [2007-11-20 11:07:44]

XHTML:

If the output is XHTML use the function saveXML().

Output example for saveHTML:

<select name="pet" size="3" multiple>
    <option selected>mouse</option>
    <option>bird</option>
    <option>cat</option>
</select>

XHTML conform output using saveXML:

<select name="pet" size="3" multiple="multiple">
    <option selected="selected">mouse</option>
    <option>bird</option>
    <option>cat</option>
</select>

[#13] tyson at clugg dot net [2005-04-21 17:44:56]

<?php // Using DOM to fix sloppy HTML. // An example by Tyson Clugg <tyson@clugg.net> // // vim: syntax=php expandtab tabstop=2 function tidyHTML($buffer) { // load our document into a DOM object $dom = @DOMDocument::loadHTML($buffer); // we want nice output $dom->formatOutput = true; return($dom->saveHTML()); } // start output buffering, using our nice // callback funtion to format the output. ob_start("tidyHTML"); ?>
<html>
<p>It's like comparing apples to oranges.
</html>
<?php // this will be called implicitly, but we'll // call it manually to illustrate the point. ob_end_flush(); ?>

The above code takes out sloppy HTML:
<html>
<p>It's like comparing apples to oranges.
</html>

And cleans it up to the following:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p>It's like comparing apples to oranges.
</p></body></html>