title: need help modifying PHP create user code into editing user code
body: <p>This is my php code below and I need to write some code for editing the user details, I need to write code and I have done create user but don't know how to, do editing,please help me</p>
  
  <pre><code>// Handle user request
       $create_user =  "INSERT INTO details (username, password, first_name, last_name, gender,email,nationality,ethnicity,address,postcode,tel_number,employment_type,start_of_employment, bio)" . 
      "VALUES ('{$username}', '{$password}', '{$first_name}', '{$last_name}', '{$gender}','{$email}', '{$nationality}','{$ethnicity}','{$address}','{$postcode}','{$tel_number}','{$employment_type}','{$start_of_employment}','{$bio}');";
  </code></pre>