[php] How to upgrade safely php version in wamp server

One important step is missing in all answers. I successfully upgraded with following steps:

  • stop apache service with wamp stack manager.
  • rename your wampstack/php dir to wampstack/php_old
  • copy new php dir to wampstack/
  • replace wampstack/php/php.ini by wampstack/php_old/php.ini
  • test and fix any error with php -v (for example missing extensions)
  • [optional] update php version in wampstack/properties.ini
  • Replace wampstack/apache/bin/php7ts.dll by wampstack/php/php7ts.dll
    • This is not mentioned in the other answers but you need this to use the right php version in apache!
  • start apache service