DOMDocument::saveHTMLFile

(PHP 5, PHP 7, PHP 8)

DOMDocument::saveHTMLFile — Dumps the internal document into a file using HTML formatting

说明

public DOMDocument::saveHTMLFile(string $filename): int|false

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

filename: The path to the saved HTML document.

返回值

Returns the number of bytes written or false if an error occurred.

示例

示例 #1 Saving a HTML tree into a file

<?php

$doc = new DOMDocument('1.0');
// we want a nice output
$doc->formatOutput = true;

$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 'Wrote: ' . $doc->saveHTMLFile("/tmp/test.html") . ' bytes'; // Wrote: 129 bytes

?>

参见

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

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用户贡献的备注 3 notes

down

RiKdnUA at mail dot ru ¶

11 years ago

saveHTMLFile() always saves the file in UTF-8. Even if the DOMDocument->encoding explicitly prescribe different from UTF-8 encoding. All "non-Latin" characters will be converted to HTML-entities. Tested in PHP 5.2.9-2 and PHP 5.2.17. Example:



<?php

$document=new domDocument('1.0', 'WINDOWS-1251');

$document->loadHTML('<html><head><title>Russian language</title></head><body>Русский язык</body></html>');

$document->formatOutput=true;

$document->encoding='WINDOWS-1251';

echo "Записано байт. Recorded bytes: ".$document->saveHTMLFile('html.html');

?>



Method recorded file in UTF-8 encoding. The contents of the file html.html:



<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Russian language</title>

</head>

<body>Ðóññêèé ÿçûê</body>

</html>

down

-1

naebeth at hotmail dot NOSPAM dot com ¶

12 years ago

Not mentioned in the documentation is the fact that using DOMDocument::saveHTMLFile() will automatically overwrite the contents if an existing file is used - with no notice, warning or error thrown.

Make sure you check the filename before using this function so that you don't accidentally overwrite important files.

Example:
<?php

$file = fopen('test.html', 'w');
fwrite($file, 'this is some text');
fclose($file);

$doc = new DOMDocument();
$doc->formatOutput = true;
$doc->loadHTML('<html><head><title>Test</title></head><body></body></html>');
$doc->saveHTMLFile('test.html');

// test.html
/*
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Test</title>
</head>
<body></body>
</html>
*/

?>

If you're dynamically generating a series of pages using DOMDocument objects, make sure you are also dynamically generating the file or directory names using something that can't easily be confused for an existing file/folder, or check if the desired path already exists before saving so that you don't accidentally delete previous files.

down

-1

deep42thouSPAMght42 at y_a_h_o_o dot com ¶

13 years ago

I foolishly assumed that this function was equivalent to
<?php
file_put_contents($filename, $document->saveHTML());
?>
but there are differences in the generated HTML:
<?php
$doc = new DOMDocument();
$doc->loadHTML(
    '<html><head><title>Test</title></head><body></body></html>'
);
$doc->encoding = 'iso-8859-1';

echo $doc->saveHTML();
#<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
#<html>
#<head><title>Test</title></head>
#<body></body>
#</html>

$doc->saveHTMLFile('output.html');
#<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
#<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Test</title></head><body></body></html>

?>
Note that saveHTMLFile() adds a UTF-8 meta tag despite the ISO-8859-1 document encoding.