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DOMDocument::loadHTMLFile

(PHP 5)

DOMDocument::loadHTMLFile Load HTML from a file

Descrizione

public bool DOMDocument::loadHTMLFile ( string $filename [, int $options = 0 ] )

The function parses the HTML document in the file named filename. Unlike loading XML, HTML does not have to be well-formed to load.

Elenco dei parametri

filename

The path to the HTML file.

options

Since PHP 5.4.0 and Libxml 2.6.0, you may also use the options parameter to specify additional Libxml parameters.

Valori restituiti

Restituisce TRUE in caso di successo, FALSE in caso di fallimento. If called statically, returns a DOMDocument o FALSE in caso di fallimento.

Errori/Eccezioni

If an empty string is passed as the filename or an empty file is named, a warning will be generated. This warning is not generated by libxml and cannot be handled using libxml's error handling functions.

Questo metodo può essere chiamato in modo statico, ma genererà un errore E_STRICT.

Anche se un HTML malformato potrebbe essere caricato con successo, questa funzione può generare errori E_WARNING quando incontra un markup errato. le funzioni di gestione errore di libxml possono essere usate per gestire questi errori.

Esempi

Example #1 Creating a Document

<?php
$doc 
= new DOMDocument();
$doc->loadHTMLFile("filename.html");
echo 
$doc->saveHTML();
?>

Log delle modifiche

Versione Descrizione
5.4.0 Added options parameter.

Vedere anche:

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User Contributed Notes 5 notes

up
3
Mark Omohundro, ajamyajax dot com
5 years ago
<?php
// try this html listing example for all nodes / includes a few getElementsByTagName options:

$file = $DOCUMENT_ROOT. "test.html";
$doc = new DOMDocument();
$doc->loadHTMLFile($file);

// example 1:
$elements = $doc->getElementsByTagName('*');
// example 2:
$elements = $doc->getElementsByTagName('html');
// example 3:
//$elements = $doc->getElementsByTagName('body');
// example 4:
//$elements = $doc->getElementsByTagName('table');
// example 5:
//$elements = $doc->getElementsByTagName('div');

if (!is_null($elements)) {
  foreach (
$elements as $element) {
    echo
"<br/>". $element->nodeName. ": ";

   
$nodes = $element->childNodes;
    foreach (
$nodes as $node) {
      echo
$node->nodeValue. "\n";
    }
  }
}
?>
up
1
andy at carobert dot com
9 years ago
This puts the HTML into a DOM object which can be parsed by individual tags, attributes, etc..  Here is an example of getting all the 'href' attributes and corresponding node values out of the 'a' tag. Very cool....

<?php
$myhtml
= <<<EOF
<html>
<head>
<title>My Page</title>
</head>
<body>
<p><a href="/mypage1">Hello World!</a></p>
<p><a href="/mypage2">Another Hello World!</a></p>
</body>
</html>
EOF;

$doc = new DOMDocument();
$doc->loadHTML($myhtml);

$tags = $doc->getElementsByTagName('a');

foreach (
$tags as $tag) {
       echo
$tag->getAttribute('href').' | '.$tag->nodeValue."\n";
}
?>

This should output:

/mypage1 | Hello World!
/mypage2 | Another Hello World!
up
0
onemanbanddan at gmail dot com
7 months ago
The options for surpressing errors and warnings will not work with this as they do for loadXML()
e.g.
<?php
$doc
->loadHTMLFile($file, LIBXML_NOWARNING | LIBXML_NOERROR);
?>
will not work.
you must use:
<?php
libxml_use_internal_errors
(true);
$doc->loadHTMLFile($file);
?>
and handle the exceptions as neccesarry.
up
-3
gzech at SPAMFILTER dot eso dot org
7 years ago
If you want to suppress output warnings from loadHTMLFile($url), put an @ sign in front. This even works in:
<?php
$load
= @$dom->loadHTMLFile($url);
?>
up
-6
bens at effortlessis dot com
9 years ago
Note that this function doesn't parse the individual tags WITHIN the html file - it's all loaded as a "black box", and you end up with an XML widget that comprises nothing but the complete chunk of HTML.

I was hoping it would function as a sort of HTML-validator/parser, but that doesn't seem to be the case.
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