title: php code to connect with Mysql database not apply
body: <p><a href="https://i.stack.imgur.com/SANGp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/SANGp.png" alt="enter image description here"></a></p>
  
  <p>when i click in submit in form </p>
  
  <p><strong>Error</strong>: </p>
  
  <p><code>insert into user (user_name,tel,password,isAdmin) VALUES ('dfd','555,' 443434','0')</code></p>
  
  <p>You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '443434','0')' at line 2 </p>