cvs: phpdoc /en/reference/classobj/functions is-subclass-of.xml

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>,