PHP 5.1.6 integration with Apache 2.2.4

-- unzip php to D:/php516 as $PHP

-- copy $PHP/php5ts.dll to $WINDOWS/system32/php5ts.dll

-- rename $PHP/php.ini-dist => $PHP/php.ini

-- open $PHP/php.ini and edit
 
 # find
  extension_dir = "./" => extension_dir = "D:/php516/ext"
  
 # find
  ;extension=php_mbstring.dll => extension=php_mbstring.dll
  ;extension=php_gd2.dll => extension=php_gd2.dll
  ;extension=php_mysql.dll => extension=php_mysql.dll
  add mysqli extension => extension=php_mysqli.dll
  
-- download php5apache2.dll-php5.1.x.zip from http://www.apachelounge.com/download/ and following the instruction in "Readme First.txt"
  # copy php5apache2.dll to php install folder and replace the old one
  # copy httpd.exe.manifest to apache's /bin
  
-- open apache's httpd.conf 
 # find LoadModule and Add
 
  LoadModule php5_module D:/tools/php516/php5apache2.dll
  PHPIniDir D:/tools/php516
  AddType application/x-httpd-php .php