DOMDocument::loadHTML
<?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";
}
}
}
?>
DOMDocument::loadHTMLFile
(PHP 5)
DOMDocument::loadHTMLFile — Load HTML from a file
Descrierea
bool DOMDocument::loadHTMLFile
( string
$filename
)
The function parses the HTML document in the file named
filename. Unlike loading XML, HTML does not have
to be well-formed to load.
Parametri
-
filename -
The path to the HTML file.
Valorile întoarse
Întoarce valoarea TRUE în cazul
succesului sau FALSE în cazul eșecului. If called statically, returns a
DOMDocument sau FALSE în cazul eșecului.
Erori/Excepții
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.
Această metodă poate fi apelată în mod static, dar va emite
o eroare E_STRICT.
Cu toate că codul HTML deteriorat ar trebui să se încarce cu succes, această
funcție poate să genereze erori de tip E_WARNING atunci când
întâlnește un marcaj greșit.
Funcțiile de gestiune a erorilor libxml pot fi utilizate pentru a prelucra
aceste erori.
Exemple
Example #1 Creating a Document
<?php
$doc = new DOMDocument();
$doc->loadHTMLFile("filename.html");
echo $doc->saveHTML();
?>
Vedeți de asemenea
- DOMDocument::loadHTML() - Load HTML from a string
- DOMDocument::saveHTML() - Dumps the internal document into a string using HTML formatting
- DOMDocument::saveHTMLFile() - Dumps the internal document into a file using HTML formatting
add a note
User Contributed Notes
DOMDocument::loadHTMLFile - [5 notes]
Mark Omohundro, ajamyajax dot com ¶
4 years ago
andy at carobert dot com ¶
7 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!
gzech at SPAMFILTER dot eso dot org ¶
6 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);
?>
Lachlan Hunt ¶
7 years ago
Andy, the code you gave should not give that result. In your code, $tag is an <a> element and the nodeValue of elements is null, according to the DOM2 spec. You need to get at the text node first, before getting the node value.
<?
...
foreach ($tags as $tag) {
echo $tag->getAttribute('href').' | '.$tag->childNodes->item(0)->nodeValue."\n";
}
?>
This should output:
/mypage1 | Hello World!
/mypage2 | Another Hello World!
bens at effortlessis dot com ¶
8 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.