Adding a captcha plugin for comments in the site

Actually there are a lot of solution for this. Simply a google could answer you the whole. And also WordPress plugin repository could help you. But to pinpoint, you can use Plugins easily. Try anyone of them:

And also, Akismet is a very good plugin to get the spam out of a WordPress site. And the good news is: Akismet is freely distributed with WordPress.

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)