What are the advantages of using IDs instead of email addresses as values in dropdown menus in PHP forms?

Using IDs instead of email addresses as values in dropdown menus in PHP forms can provide better security and privacy for users. IDs are unique identifiers that do not reveal personal information like email addresses do. Additionally, using IDs can improve the performance of the form by reducing the amount of data being sent back and forth between the client and server. 

<select name="user_id">
    <option value="1">User 1</option>
    <option value="2">User 2</option>
    <option value="3">User 3</option>
</select>

Keywords

IDs email addresses dropdown menus PHP forms values

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