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document the change in the first parameter to 'mixed'

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@171390 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Nuno Lopes 2004-10-27 14:38:25 +00:00
parent f647fe15cd
commit d5822b0590
1 changed files with 26 additions and 5 deletions
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31
reference/classobj/functions/is-subclass-of.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/classobj.xml, last change in rev 1.4 -->
<refentry id="function.is-subclass-of">
<refnamediv>
@ -12,7 +12,7 @@
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>is_subclass_of</methodname>
<methodparam><type>object</type><parameter>object</parameter></methodparam>
<methodparam><type>mixed</type><parameter>object</parameter></methodparam>
<methodparam><type>string</type><parameter>class_name</parameter></methodparam>
</methodsynopsis>
<para>
@ -20,6 +20,12 @@
<parameter>object</parameter>, belongs to a class which is a
subclass of <parameter>class_name</parameter>, &false; otherwise.
</para>
<note>
<para>
Since PHP 5.0.3 you may also specify the <parameter>object</parameter>
parameter as a string (the name of the class).
</para>
</note>
<para>
<example>
<title><function>is_subclass_of</function> example</title>
@ -47,18 +53,33 @@ if (is_subclass_of($WFC, 'WidgetFactory')) {
} 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"
// usable only since PHP 5.0.3
if (is_subclass_of('WidgetFactory_Child', 'WidgetFactory')) {
echo "yes, WidgetFactory_Child is a subclass of WidgetFactory\n";
} else {
echo "no, WidgetFactory_Child is not a subclass of WidgetFactory\n";
}
?>
]]>
</programlisting>
</example>
&example.outputs;
<screen>
<![CDATA[
yes, $WFC is a subclass of WidgetFactory
no, $WF is not a subclass of WidgetFactory
yes, WidgetFactory_Child is a subclass of WidgetFactory
]]>
</screen>
</example>
</para>
<simpara>
See also <function>get_class</function>,