DOMElement
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DOMElement::setAttribute

(PHP 5)

DOMElement::setAttribute — Adds new attribute

说明

DOMAttr DOMElement::setAttribute ( string $name , string $value )

Sets an attribute with name name to the given value. If the attribute does not exist, it will be created.

参数

name

The name of the attribute.

value

The value of the attribute.

返回值

The new DOMAttr or FALSE if an error occured.

错误/异常

DOM_NO_MODIFICATION_ALLOWED_ERR

Raised if the node is readonly.

范例

Example #1 Setting an attribute

<?php
$doc = new DOMDocument("1.0");
$node = $doc->createElement("para");
$newnode = $doc->appendChild($node);
$newnode->setAttribute("align", "left");
?>

参见

DOMElement
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PHP手册 - N: Adds new attribute

用户评论:

Rakesh Verma - rakeshnsony at gmail dot com (11-Nov-2010 07:27)

<?php
//Store your html into $html variable.
$html="
<html>
<head>
<title>Untitled Document</title>
</head>

<body>
    <a href='http://example.com'>Example</a><br>
    <a href='http://google.com'>Google</a><br>
   
    <a href='http://www.yahoo.com'>Yahoo</a><br>
</body>

</html>";

$dom = new DOMDocument();
$dom->loadHTML($html);

//Evaluate Anchor tag in HTML
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");

for ($i = 0; $i < $hrefs->length; $i++) {
        $href = $hrefs->item($i);
        $url = $href->getAttribute('href');

        //remove and set target attribute       
        $href->removeAttribute('target');
        $href->setAttribute("target", "_blank");

        $newURL=$url."/newurl";

        //remove and set href attribute       
        $href->removeAttribute('href');
        $href->setAttribute("href", $newURL);
}

// save html
$html=$dom->saveHTML();

echo $html;

?>

address at gmail dot com (03-Jul-2008 03:25)

If wanting to set an attribute of an element with unique id of "1"

<?php
$dom = new DomDocument();
$dom->load('test.xml');
$xp = new DomXPath($dom);
$res = $xp->query("//*[@id = '1']");
$res->item(0)->setAttribute('title','2');
$dom->save('test.xml');
?>

Vasil Rangelov (01-Aug-2007 12:44)

@karvjorm,
Using this method is not exactly a good practice. Infact, I think it may be a bug.
Names beginning with "xml" are reserved (for namespaces in this case).
setAttribute() should return false in this case I think, but I suppose it doesn't.

Still, the right way to do it is with createElementNS().
It lets you specify the namespace when creating the element node.

So the equivalent to yours ($html added to allow word wrapping) is:

$dom = new DomDocument('1.0','iso-8859-15');
$html = $dom->createElementNS('http://www.w3.org/1999/xhtml', 'html');
$ht_ml = $dom->appendChild($html);
$ht_ml->setAttribute('xml:lang','fi');
$ht_ml->setAttribute('lang','fi');

karvjorm at users.sourceforge.net (02-Mar-2007 11:05)

$dom = new DomDocument('1.0','iso-8859-15');

$ht_ml = $dom->appendChild($dom->createElement('html'));
$ht_ml->setAttribute('xmlns','http://www.w3.org/1999/xhtml');
$ht_ml->setAttribute('xml:lang','fi');
$ht_ml->setAttribute('lang','fi');

Result:

<?xml version="1.0" encoding="iso-8859-15"?>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fi" lang="fi">