cvs: phpdoc /en/language/oop5 final.xml

jellybob Fri Jul 23 14:16:04 2004 EDT Modified files: /phpdoc/en/language/oop5 final.xml Log: Created a reference on using the final keyword. http://cvs.php.net/diff.php/phpdoc/en/language/oop5/final.xml?r1=1.1&r2=1.2&ty=u Index: phpdoc/en/language/oop5/final.xml diff -u phpdoc/en/language/oop5/final.xml:1.1 phpdoc/en/language/oop5/final.xml:1.2 --- phpdoc/en/language/oop5/final.xml:1.1 Sun Jul 11 08:33:25 2004 +++ phpdoc/en/language/oop5/final.xml Fri Jul 23 14:16:04 2004 @@ -1,11 +1,37 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.1 $ --> +<!-- $Revision: 1.2 $ --> <sect1 id="language.oop5.final"> <title>Final Keyword</title> <para> - . + PHP 5 introduces the final keyword, which prevents child classes from + overriding a method or variable by prefixing the definition with final. </para> + + <example> + <title>Abstract class example</title> + <programlisting role="php"> +<![CDATA[ +<?php +class BaseClass { + public function test() { + echo "BaseClass::test() called\n"; + } + + final public function moreTesting() { + echo "BaseClass::moreTesting() called\n"; + } +} +class ChildClass extends BaseClass { + public function moreTesting() { + echo "ChildClass::moreTesting() called\n"; + } +} +// Results in Fatal error: Cannot override final method BaseClass::moreTesting() +?> +]]> + </programlisting> + </example> </sect1>