Exam 4: Handling User Input

The best way to ensure valid form data is to build the Web form with controls that only allow the user to enter acceptable responses

The mail() function returns a value of TRUE if the message was sent successfully and FALSE if it was not.

The alternate method to escape strings is the stripslashes() function.

____________________ or superglobals are predefined global arrays that contain client, server, and environment information that you can use in your scripts.

The ____ function can be used to ensure that a number has the appropriate number of decimal places.

You must use the global keyword to reference a global variable within the scope of a function.

The $_REQUEST autoglobal is not secure because it also includes the contents of the ____________________ autoglobal.

Which of the following is NOT a required argument of the mail() function?

The get method restricts the number of characters that can be appended to a URL to 255.

When the post method is used to submit a form, the name portion of the name/value pair becomes the value assigned to the array element.

The ____________________ family of functions can be used to ensure that the user enters numeric values where necessary.

In PHP, a(n) e-mail message is sent using the ____ function.

From, Cc, Bcc and Date headers are examples of additional headers.

In PHP, an e-mail message is sent using the email() function.

The get method is useful as a ____________________ technique because it allows you to see the names and values that are being sent to the Web server.

The $_ENV autoglobal contains ____ variables that programs use to interact with the system.

When you click a form's submit button, each field on the form is sent to the Web server as a ____________________ pair.

There are security risks using the $_REQUEST autoglobal because it includes the contents of the ____ autoglobal as well as the $_GET and $_POST autoglobals.

When you use the ____ method to submit form data to the processing script, the form data is appended to the URL specified by the action attribute.

A good programming practice is to stop processing a form when an error is found and display the error to the user.