Subverter

index.html Give the "Text Input" a name not an ID. <!-- This section is for: Take a quick Godzilla survey /--> <div id="survey-div"> <form id="survey-form" class="MainPgTxtBckgColor" action = "GetFormData.php" method = "post"> <fieldset id="survey-fieldset"> <legend>Take one of our quick surveys.</legend> <p> <label>1. Who is your <strong>favorite monster</strong> character (Godzilla related or not):</label> <input name="favmonster" type = "text" value = "" /> </p> <p> <label>Press 'Submit' when you are done.</label> <input type="submit" value="Submit" name="submit_button"> </p> </fieldset> </form> </div> GetFormData.php Watch here how to print code output <?php // define variables and set to empty values $favmonsterErr = ""; $favmonster = ""; // verify that field is not empty if ($_SERVER['REQUEST_METHOD'] == 'POST') { if (empty($_POST['favmonster'])) { echo "Favorite Monster is required"; echo '<input type="button" style="display: block" value="Back" onclick="window.history.back()" />'; } else { $favmonster = test_input($_POST['favmonster']); echo "You Favorite Monster is: " .$favmonster; echo '<input type="button" style="display: block" value="Back" onclick="window.history.back()" />'; } } function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); if (!preg_match('/^[a-zA-Z ]*$/',$data)) { $data = "Only letters and white space allowed"; } return $data; } ?>

Seems you are missing a double quotation there