cvs: phpdoc /en/language oop.xml

mfischer Mon Jun 10 04:43:11 2002 EDT Modified files: /phpdoc/en/language oop.xml Log: - Document that order of class definition is important (closes #13165). # Though the zend engine CAN handle class definitions not in the right order # this is not always true, especially when extending classes which extend # classes. See the report. Index: phpdoc/en/language/oop.xml diff -u phpdoc/en/language/oop.xml:1.34 phpdoc/en/language/oop.xml:1.35 --- phpdoc/en/language/oop.xml:1.34 Wed May 15 16:41:17 2002 +++ phpdoc/en/language/oop.xml Mon Jun 10 04:43:11 2002 @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.34 $ --> +<!-- $Revision: 1.35 $ --> <chapter id="language.oop"> <title>Classes and Objects</title> @@ -255,6 +255,25 @@ </programlisting> </informalexample> + <para> + This is also called a "parent-child" relationship. You create a class, + parent, and use <literal>extends</literal> to create a new class + <emphasis>based</emphasis> on the parent class: the child class. You can + even use this new child class and create another class based on this child + class. + </para> + <note> + <para> + Classes must be defined before they are used! If you want the class + <literal>Named_Cart</literal> to extend the class + <literal>Cart</literal>, you will have to define the class + <literal>Cart</literal> first. If you want to create another class called + <literal>Yellow_named_cart</literal> based on the class + <literal>Named_Cart</literal> you have to define + <literal>Named_Cart</literal> first. To make it short: the order in which + the classes are defined is important. + </para> + </note> </sect1> <sect1 id="language.oop.constructor">