What are common compatibility issues between PHP versions and IIS?

One common compatibility issue between PHP versions and IIS is related to the FastCGI configuration. Different PHP versions may require different FastCGI settings in IIS to function properly. To solve this issue, you can update the FastCGI settings in IIS to match the requirements of the PHP version you are using. 

// Example FastCGI settings for PHP 7.4 in IIS
fastcgi.impersonate = 1
fastcgi.logging = 0
cgi.fix_pathinfo=1
cgi.force_redirect = 0
fastcgi.logging = 0

Keywords

PHP IIS compatibility version issues

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