Having trouble with the testlink installation. At the beginning of the installation it's giving me a warning saying:
"Failed! MySQL Database cannot be used." and after I try to install it shows me this "Checking PHP DB extensions Warning!: Your PHP installation don't have the mysql extension mysql- without it is IMPOSSIBLE to use Testlink.Failed!". I installed Xampp before this, so I should have MySql, right? If it matters, I had to switch the Apache port numbers to 8080.
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I faced similar issue, tried all given answers on different forums, but nothing worked for me unless I downgraded the version of Xampp to 32 bit installer version 5.6.36. Link which simply solved the problem.
As per my understanding issue is testlink [mysql] is not compatible with the latest version of PHP.
I followed this article to install but here also people faced similar issue as you can see comment section and there is no response from author on same. Rest of the article was very helpful.
I solved this issue configuring the extensions for SQL in file xampp's php.ini
extension=php_mysql.dll
extension=php_mysqli.dll
extension=php_pdo_mysql.dll
DLLs should be in the path of the xampp installation, in my case C:\xampp\php\ext\**
Some versions of PHP are not compatible with MySQL. Try reinstalling PHP using version 5.6