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">
