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PHP - Database Searchfunction doesn't work as intented


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Hello everyone,

I have a small problem here. I want to create a basic 'searchengine' for my database. Which means: people give an input X for example and this function searches every entry in the database for that input X and shows it in a table to the user.
So far, it's showing me every current entry in the database, which is what I wanted. But the problem is, that whenever I make an input for the search, nothing happens. It's as if the page didn't change at all. I took a look earlier in my variables, but I couldn't find anything.

Heres my source code. You can also find it in the attachment.




$valueToSearch = $_POST['suchfilter'];

$query = "SELECT * FROM `tabelle` WHERE CONCAT(`firstname`, `lastname`, `gender`, `adress`) LIKE'%".$valueToSearch."%'";

$search_result = filterTable($query);



else {

$query = "SELECT * FROM `tabelle`";

$search_result = filterTable($query);



function filterTable($query){

$con = mysqli_connect("localhost","root","","csvtest");

$filt_result = mysqli_query($con, $query);

return $filt_result;

echo $filterTable;




<!DOCTYPE html>








                        <input type="text" name="suchfilter" placeholder="suchwert"><br><br>

                        <input type="submit" name="search" value="Filter"><br><br>









                                    <?php while($row = mysqli_fetch_array($search_result)):?>


                                            <td><?php echo $row['firstname'];?></td>

                                            <td><?php echo $row['lastname'];?></td>

                                            <td><?php echo $row['gender'];?></td>

                                            <td><?php echo $row['adress'];?></td>


                                    <?php endwhile;?>







I'd appreciate an answer since this is something really important to me. 

Best regards



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