jellybob Fri Jul 23 14:15:29 2004 EDT
Modified files:
/phpdoc/en/reference/classobj/functions is-subclass-of.xml
Log:
Added an example.
http://cvs.php.net/diff.php/phpdoc/en/reference/classobj/functions/is-subclass-of.xml?r1=1.3&r2=1.4&ty=u
Index: phpdoc/en/reference/classobj/functions/is-subclass-of.xml
diff -u phpdoc/en/reference/classobj/functions/is-subclass-of.xml:1.3
phpdoc/en/reference/classobj/functions/is-subclass-of.xml:1.4
--- phpdoc/en/reference/classobj/functions/is-subclass-of.xml:1.3 Thu May 30
10:02:40 2002
+++ phpdoc/en/reference/classobj/functions/is-subclass-of.xml Fri Jul 23 14:15:29
2004
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
<!-- splitted from ./en/functions/classobj.xml, last change in rev 1.4 -->
<refentry id="function.is-subclass-of">
<refnamediv>
@@ -19,6 +19,46 @@
This function returns &true; if the object
<parameter>object</parameter>, belongs to a class which is a
subclass of <parameter>class_name</parameter>, &false; otherwise.
+ </para>
+ <para>
+ <example>
+ <title><function>is_subclass_of</function> example</title>
+ <programlisting role="php">
+<![CDATA[
+<?php
+// define a class
+class WidgetFactory
+{
+ var $oink = 'moo';
+}
+
+// define a child class
+class WidgetFactory_Child extends WidgetFactory
+{
+ var $oink = 'oink';
+}
+
+// create a new object
+$WF = new WidgetFactory();
+$WFC = new WidgetFactory_Child();
+
+if (is_subclass_of($WFC, 'WidgetFactory')) {
+ echo "yes, \$WFC is a subclass of WidgetFactory\n";
+} else {
+ echo "no, \$WFC is not a subclass of WidgetFactory\n";
+}
+// Outputs "yes, $WFC is a subclass of WidgetFactory\n";
+
+if (is_subclass_of($WF, 'WidgetFactory')) {
+ echo "yes, \$WF is a subclass of WidgetFactory\n";
+} else {
+ echo "no, \$WF is not a subclass of WidgetFactory\n";
+}
+// Outputs "no, $WF is not a subclass of WidgetFactory\n"
+?>
+]]>
+ </programlisting>
+ </example>
</para>
<simpara>
See also <function>get_class</function>,
