PHP within an Iframe not working in IE

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I have a program, that searches a database from a PHP file, linking back to the some file with the output.It works perfectly in all browsers, excluding IE. I have no idea why. Here is my code:\[code\]<?phpif( isset( $_POST['schoolname'] ) && strlen( trim( $_POST['schoolname'] ) ) > 0 ){ $school = filter_input(INPUT_POST, 'find', FILTER_SANITIZE_STRING); $school = $_POST['schoolname']; #connecting to the database $conn = mysql_connect("localhost", "root"); mysql_select_db("finalproject"); $sql = "select * from presentations where school like '%$school%'"; $result = mysql_query($sql, $conn) or die(mysql_error()); #this is the array that stores and displays the results of the search if ( mysql_num_rows($result) >0) { while ($newArray = mysql_fetch_array($result)) { $school = $newArray['school']; $date = $newArray['date']; $place = $newArray['place']; $time = $newArray['time']; echo $school . ", " . $place . ", " . $date . ", " . $time . "<br />" . "<br />"; } } else { echo "Record not found" . "<br />" . "<br />"; } mysql_close($conn);}?><!-- The form in which the search happens --><form action=" " method="post">School's name: <input type="text" name="schoolname"><input type="submit" name="button" value="http://stackoverflow.com/questions/14445770/Search"></form>\[/code\]This is just my code for within the IFrame.