- in_array: documentation ( source)
<?php
/*
assuming:
<form action='admin.php' name='value' method='POST'>
<input type="radio" name="option" value="employee" checked> View Customers<br>
<input type="radio" name="option" value="upload"> Upload File<br>
<input type="radio" name="option" value="editUser"> Edit Access<br>
<input type="submit" name="submit" value="Enter" class="button" />
</form>
*/
//just simulating
$_POST['option'] = 'employee';
function redirect_to ($to){
echo $to;
}
//code:
$redirectsAllowed = ['employee', 'upload', 'editUser'];
if(isset($_POST['option']) && in_array($_POST['option'],$redirectsAllowed,true)){
redirect_to ($_POST['option'] . '.php');
}