multiple inputs - Problems with array - php

Question

it is such that I need to use multiple inputs on my side,
I've tried to do like this but it does not work as it will not show up on the page at all in some manner.
HTML
<div id="onlinetestside">
<div id="onlinetestsidealt"><?php echo $ordet;?></div>
<input type="text" name="ord[]" maxlength="190">
<div style="clear:both;"></div>
</div>
PHP
//ordetalt its coming from database.
$alt = $_POST["ord"];
if($ordetalt == $alt)
{
echo $ordetalt . " og " . $alt;
}
else
{
echo "Error " . $ordetalt . " and " . $alt;
}
error appears like this:
Error Hej and Array
What I want to get to it shall be such that "$ordetalt == $alt" have the same content and it fits together.
EIDT
Here I show the entire code where I need to download some code to the side.
if ($stmt = $this->mysqli->prepare('SELECT id, ordet, ordetalt FROM test WHERE getid = ?')) {
$stmt->bind_param('i', $id);
$id = $_GET['id'];
$stmt->execute();
$stmt->bind_result($id, $ordet, $ordetalt);
while ($stmt->fetch()) {
?>
<div id="onlinetestside">
<div id="onlinetestsidealt"><?php echo $ordet;?></div>
<input type="text" name="ord[]" maxlength="190">
<div style="clear:both;"></div>
</div>
<?php
//ordetalt its coming from database
$alt = $_POST["ord"];
if($ordetalt == $alt)
{
echo $ordetalt . " og " . $alt;
}
else
{
echo "Error " . $ordetalt . " and " . $alt;
}
}
$stmt->close();
}
EIDT EIDT
$i = 0;
$a = $i++;
$alt = $_POST["ord"][$a];
if($ordetalt == $alt)
{
echo $ordetalt . " og " . $alt;
}
else
{
echo "Error " . $ordetalt . " and " . $alt;
}

Answer 1

Barmar is spot on, your line
$alt = $_POST["ord"];
Should read
$alt = $_POST["ord"][0];
OR
change your html like so:
<div id="onlinetestside">
<div id="onlinetestsidealt"><?php echo $ordet;?></div>
<input type="text" name="ord" maxlength="190">
<div style="clear:both;"></div>
</div>