Check if user is exist in the table
<p>I have table name <strong>articles_likes</strong> with 3 columns</p>

<pre><code>id   user   article
1    73      23
2    76      43
3    75      35
4    73      41
</code></pre>

<p>Then user login into system for example with </p>

<p><code>$_SESSION['user_id'] = 73</code></p>

<p>How can i check if user 73 is already existed and already liked articles in that table?
Could anyone help me to solve that? Thank you so much</p>