File: object.xml

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 288721 $ -->
<sect1 xml:id="language.types.object">
 <title>Objects</title>

 <sect2 xml:id="language.types.object.init">
  <title>Object Initialization</title>

  <para>
   To create a new <type>object</type>, use the <literal>new</literal> statement
   to instantiate a class:
  </para>

  <informalexample>
   <programlisting role="php">
<![CDATA[
<?php
class foo
{
    function do_foo()
    {
        echo "Doing foo."; 
    }
}

$bar = new foo;
$bar->do_foo();
?>
]]>
   </programlisting>
  </informalexample>

  <simpara>
   For a full discussion, see the
   <link linkend="language.oop5">Classes and Objects</link> chapter.
  </simpara>

 </sect2>
 
 <sect2 xml:id="language.types.object.casting">
  <title>Converting to object</title>
  
  <para>
   If an <type>object</type> is converted to an <type>object</type>, it is not
   modified. If a value of any other type is converted to an
   <type>object</type>, a new instance of the <literal>stdClass</literal>
   built-in class is created. If the value was &null;, the new instance will be
   empty. <type>Array</type>s convert to an <type>object</type> with properties
   named by keys, and corresponding values. For any other value, a member
   variable named <literal>scalar</literal> will contain the value.
  </para>

  <informalexample>
   <programlisting role="php">
<![CDATA[
<?php
$obj = (object) 'ciao';
echo $obj->scalar;  // outputs 'ciao'
?>
]]>
   </programlisting>
  </informalexample>

 </sect2>
</sect1>
 
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