cyberRobot

Since get_the_category() returns an array, you could use implode(). More information can be found here:
http://php.net/manual/en/function.implode.php

You could try something like this:
$matchingIndex = ''; foreach($yourArray as $currIndex => $subArray) {     if($subArray[1] == 'Zurich Life') {         $matchingIndex = $currIndex;         break;  //break out of the loop, since you found Zurich Life     } }

As mac_gyver mentioned, nothing can be outputted to the screen before calling header(). Since you're just redirecting the user, the header() call can be moved to the top of your script.
<?php  //lets check the user is authorised to be here! if ($userLevel > 3){     echo "you are authorised to be here!"; } else {     header('Location: ../index.php');     exit; }     //this is going to be the main section for reporting   include('../header.php'); ?>   Note that I added the "exit" statement after the header() call to prevent the script from doing any further processing.   If you want to display a message before the page is redirects, you could look into using header() and "refresh". An example can be found here: http://php.net/manual/en/function.header.php#97114

You're using "SymptomId" here:
<select name="Symptom" id="SymptomId" onchange="Symselect()"> And "Symptomid" here:
 var x = document.getElementById("Symptomid").value; Those values need to match. Note: the values are case sensitive.
 
 
Note that I moved the topic to the JavaScript forum. 

How is the "birthdate" field stored in your database? If it is stored as a string and only contains the month, you would need to add quotes around the value from $select.
$birthdate = "SELECT CONCAT(FirstName,' ',LastName) AS Birth FROM Members WHERE birthdate = '" . $select . "'"; Side note: you'll want to look into using prepared queries...or use mysqli_real_escape_string() to protect yourself from SQL injection attacks.

One thing that I noticed is that the email entered through the form is being saved to $email.
$email = $_POST['email']; But the if test uses $email_from.
if(!preg_match($email_exp,$email_from)) {