Support

Hello,

most likely you do not have the OpenSSL module enabled in your php 8.1 configuration, this is why with previous version it is working. You can install it or you can simply switch to a previous version of PHP like you did.

The message literally says that one of the constants defined by the PHP OpenSSL extension (OPENSSL_RAW_DATA) is undefined. This always means that the OpenSSL extension is not enabled. There are no two ways about it.

Do note that just seeing “openssl” somewhere in the phpinfo() page is not enough. Yes, PHP may be compiled against OpenSSL but the actual OpenSSL extension may not be enabled by default. Yes, you may have cURL compiled with OpenSSL but this again does not mean that you have the PHP OpenSSL extension installed and enabled. We need the actual OpenSSL PHP extension for managing encrypted data.

What you need to see is a section in the phpinfo() page with the header “openssl” (all lowercase) just like you see for other core PHP extensions like “pcre”, “mysqli” and “mysqlnd”. Moreover, the table under that header should have a line with left hand table cell reading ‘OpenSSL Support’ and the right hand cell reading ‘enabled’.

I can tell you the most likely cause for that :) The OpenSSL extension for PHP is compiled against the OpenSSL library. A specific OpenSSL library. Having used WAMP in the past, they are very likely to only bundle it as part of their Apache package. So, if you do not have the “right” Apache version installed on your computer it won't find the OpenSSL library and the extension won't load.

Last time I used WAMP it was in 2016. I would have though that nearly 7 years later they'd have fixed that packaging issue. Well, I guess not?