php-doc-en/reference/simplexml/simplexmlelement/construct.xml
2012-11-26 21:38:03 +00:00

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<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="simplexmlelement.construct" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>SimpleXMLElement::__construct</refname>
<refpurpose>
Creates a new SimpleXMLElement object
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<constructorsynopsis>
<modifier>final</modifier> <modifier>public</modifier> <methodname>SimpleXMLElement::__construct</methodname>
<methodparam><type>string</type><parameter>data</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>options</parameter><initializer>0</initializer></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>data_is_url</parameter><initializer>false</initializer></methodparam>
<methodparam choice="opt"><type>string</type><parameter>ns</parameter><initializer>""</initializer></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>is_prefix</parameter><initializer>false</initializer></methodparam>
</constructorsynopsis>
<para>
Creates a new <classname>SimpleXMLElement</classname> object.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>data</parameter></term>
<listitem>
<para>
A well-formed XML string or the path or URL to an XML document if
<parameter>data_is_url</parameter> is &true;.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
Optionally used to specify <link linkend="libxml.constants">additional
Libxml parameters</link>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>data_is_url</parameter></term>
<listitem>
<para>
By default, <parameter>data_is_url</parameter> is &false;. Use &true; to
specify that <parameter>data</parameter> is a path or URL to an XML
document instead of <type>string</type> data.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>ns</parameter></term>
<listitem>
<para>
Namespace prefix or URI.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>is_prefix</parameter></term>
<listitem>
<para>
&true; if <parameter>ns</parameter> is a prefix, &false; if it's a URI;
defaults to &false;.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a <type>SimpleXMLElement</type> object representing
<parameter>data</parameter>.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
Produces an <constant>E_WARNING</constant> error message for each error
found in the XML data and additionally throws an <classname>Exception</classname> if the XML data
could not be parsed.
</para>
<tip>
<para>
Use <function>libxml_use_internal_errors</function> to suppress all XML
errors, and <function>libxml_get_errors</function> to iterate over them
afterwards.
</para>
</tip>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<note>
<para>
Listed examples may include <literal>example.php</literal>,
which refers to the XML string found in the first example
of the <link linkend="simplexml.examples-basic">basic usage</link> guide.
</para>
</note>
<example>
<title>Create a SimpleXMLElement object</title>
<programlisting role="php">
<![CDATA[
<?php
include 'example.php';
$sxe = new SimpleXMLElement($xmlstr);
echo $sxe->movie[0]->title;
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
PHP: Behind the Parser
]]>
</screen>
</example>
</para>
<para>
<example>
<title>Create a SimpleXMLElement object from a URL</title>
<programlisting role="php">
<![CDATA[
<?php
$sxe = new SimpleXMLElement('http://example.org/document.xml', NULL, TRUE);
echo $sxe->asXML();
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.2.0</entry>
<entry>Added the <parameter>ns</parameter> and <parameter>is_prefix</parameter> parameters.</entry>
</row>
<row>
<entry>5.1.2</entry>
<entry>Added the <parameter>options</parameter> and <parameter>data_is_url</parameter> parameters.</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><xref linkend="simplexml.examples-basic"/></member>
<member><function>simplexml_load_string</function></member>
<member><function>simplexml_load_file</function></member>
<member><xref linkend="simplexml.examples-errors" /></member>
<member><function>libxml_use_internal_errors</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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