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<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="domdocument.createattributens" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>DOMDocument::createAttributeNS</refname>
<refpurpose>
Create new attribute node with an associated namespace
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="DOMDocument">
<modifier>public</modifier> <type class="union"><type>DOMAttr</type><type>false</type></type><methodname>DOMDocument::createAttributeNS</methodname>
<methodparam><type class="union"><type>string</type><type>null</type></type><parameter>namespace</parameter></methodparam>
<methodparam><type>string</type><parameter>qualifiedName</parameter></methodparam>
</methodsynopsis>
<para>
This function creates a new instance of class
<classname>DOMAttr</classname>. &dom.node.inserted;
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>namespace</parameter></term>
<listitem>
<para>
The URI of the namespace.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>qualifiedName</parameter></term>
<listitem>
<para>
The tag name and prefix of the attribute, as <literal>prefix:tagname</literal>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
The new <classname>DOMAttr</classname> or &false; if an error occurred.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
<variablelist>
<varlistentry>
<term><constant>DOM_INVALID_CHARACTER_ERR</constant></term>
<listitem>
<para>
Raised if <parameter>qualifiedName</parameter> contains an invalid character.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>DOM_NAMESPACE_ERR</constant></term>
<listitem>
<para>
Raised if <parameter>qualifiedName</parameter> is a malformed qualified
name, or if <parameter>qualifiedName</parameter> has a prefix and
<parameter>namespace</parameter> is &null;.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.3.0</entry>
<entry>
Calling this method without specifying a prefix will now choose a prefix instead of assuming the default namespace.
Previously this would create an attribute without a prefix and incorrectly apply the namespace
to the owner element because default namespaces don't apply on attributes.
</entry>
</row>
<row>
<entry>8.3.0</entry>
<entry>
Calling this method using a prefix that was already declared on the owner element with a different namespace URI
will now change the new prefix to avoid creating namespace conflicts. This aligns the behaviour with the DOM specification.
Previously this threw a <classname>DOMException</classname> with code <constant>DOM_NAMESPACE_ERR</constant>.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><methodname>DOMNode::appendChild</methodname></member>
<member><methodname>DOMDocument::createAttribute</methodname></member>
<member><methodname>DOMDocument::createCDATASection</methodname></member>
<member><methodname>DOMDocument::createComment</methodname></member>
<member><methodname>DOMDocument::createDocumentFragment</methodname></member>
<member><methodname>DOMDocument::createElement</methodname></member>
<member><methodname>DOMDocument::createElementNS</methodname></member>
<member><methodname>DOMDocument::createEntityReference</methodname></member>
<member><methodname>DOMDocument::createProcessingInstruction</methodname></member>
<member><methodname>DOMDocument::createTextNode</methodname></member>
</simplelist>
</para>
</refsect1>
</refentry>
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