So you want to dedug PHP within Visual Studio.
You went ahead and installed extension 1 PhpTools from downloaded msi “PhpTools.xxxx.msi” from visualstudiogallery.
And for complete the installation, you also installed extension 2(like I did) Vs.php from installer “php vsphp_en_xxxx_web_installer.exe downloaded from URL
Then Visual Studio throws up below exception.
Microsoft Visual Studio
Conflicting extensions for PHP development have been detected:
Continuing using of Visual Studio may result in an unpredictible behaviour. To fix this issue, please uninstall conflicting extension above and restart Visual Studio.
Because both these extensions are not supported by Visual Studio at same time, as they are conflicting in nature.
Why conflicting? Because both extensions extend same features of Visual Studio and studio is saying that configuration of extension 1 has been or may be overwritten by extension 2.
So we need to uninstall one of these to use another.