A common practice in PHP forms is to set an error variable for each field and display the error message next to the field if the ______.

A common practice in PHP forms is to set an error variable for each field and display the error message next to the field if the field value is empty. This approach involves checking the value of each required field, and if any field is found to be empty when the form is submitted, you can set an error variable specific to that field. The error message can then be displayed next to the corresponding field to indicate that it is a required field and needs to be filled in. This approach provides clear and specific error messages for each required field, improving the user experience and aiding in form completion. Learn more: https://www.php.net/manual/en/tutorial.forms.php