cvs: phpweb / zend-engine-2.php

goba Wed Jun 25 02:52:19 2003 EDT Modified files: /phpweb zend-engine-2.php Log: s/PHP4/PHP 4/ Index: phpweb/zend-engine-2.php diff -u phpweb/zend-engine-2.php:1.5 phpweb/zend-engine-2.php:1.6 --- phpweb/zend-engine-2.php:1.5 Wed Jun 25 02:49:40 2003 +++ phpweb/zend-engine-2.php Wed Jun 25 02:52:19 2003 @@ -244,8 +244,8 @@ <h2>Object Cloning</h2> <p> -PHP4 (Zend Engine 1.0) offered no way a user could decide what copy constructor to run -when an object is duplicated. During duplication, PHP4 did a bit for bit copy making an +PHP 4 (Zend Engine 1.0) offered no way a user could decide what copy constructor to run +when an object is duplicated. During duplication, PHP 4 did a bit for bit copy making an identical replica of all the object's properties. </p> <p> @@ -314,8 +314,8 @@ suitable for any initialization that the object may need before it is used. </p> <p> -With PHP4, constructor methods were class methods that had the same name as the class itself. Since -it is very common to call parent constructors from derived classes, the way PHP4 worked made it a bit +With PHP 4, constructor methods were class methods that had the same name as the class itself. Since +it is very common to call parent constructors from derived classes, the way PHP 4 worked made it a bit cumbersome to move classes around in a large class hierarchy. If a class is moved to reside under a different parent, the constructor name of that parent changes as well, and the code in the derived class that calls the parent constructor has to be modified. @@ -352,7 +352,7 @@ <p> Having the ability to define destructors for objects can be very useful. Destructors can log messages for debugging, close database connections and do other clean-up work. No mechanism for object destructors -existed in PHP4, although PHP had already support for registering functions which should be +existed in PHP 4, although PHP had already support for registering functions which should be run on request shutdown. </p> <p> @@ -414,7 +414,7 @@ <h2>Exceptions</h2> <p> -PHP4 had no exception handling. PHP 5 introduces a exception model similar to +PHP 4 had no exception handling. PHP 5 introduces a exception model similar to that of other programming languages. </p> <h3>Example</h3> @@ -440,7 +440,7 @@ <h2>Dereferencing objects returned from functions</h2> <p> -In PHP4 it wasn't possible to dereference objects returned by functions and make further +In PHP 4 it wasn't possible to dereference objects returned by functions and make further method calls on those objects. With the advent of Zend Engine 2, the following is now possible: </p> <p>