Similarities and differences of configuration between PHP4 and PHP5

php5| comparing configuration PhP4 or PHP5, the steps of php4,5 configuration are roughly the same, but there are some differences in configuration content. In Linux and other environments, in general, as long as the correct compilation options, configuration is correct; In Windows configuration you need to be aware of the following differences:
1. Php4ts.dll and Php5ts.dll
This file will be copied to the Apache Bin directory or the system directory.
2. httpd.conf File loaded Modules
Examples are as follows:
# for PHP4 + apache1.x.xx
LoadModule Php4_module D:/www/webserver/php4/sapi/php4apache.dll
AddType application/x-httpd-php. php

# for PHP4 + apache2.x.xx
LoadModule Php4_module D:/www/webserver/php4/sapi/php4apache2.dll
AddType application/x-httpd-php. php

# where D:/WWW/WEBSERVER/PHP4 is the directory where PHP resides.

# for PHP5 + apache1.x.xx
LoadModule Php5_module D:/www/webserver/php5/php5apache.dll
AddType application/x-httpd-php. php

# for PHP5 + apache2.x.xx
LoadModule Php5_module D:/www/webserver/php5/php5apache2.dll
AddType application/x-httpd-php. php

# where D:/WWW/WEBSERVER/PHP5 is the directory where PHP resides.

3. Different ways to load MySQL

In PhP4 and previous versions, MySQL was integrated into PHP;
In PHP5 (including beta) versions, MySQL is loaded as a module and needs to be set php.ini to load, for example
Extension_dir = "d:/www/webserver/php5/ext/"
Extension=php_mysql.dll

In addition, PHP4,PHP5 all need the system directory Libmysql.dll support, if the version is incorrect, even if you set the correct extension_dir and Php_mysql.dll parameters, will also cause the Apache boot when prompted Phpp_ Mysql.dll the error that cannot be found.

You are welcome to discuss and correct.