Get the Value from another PHP page - php

Question

Hello I have the below form in my page viewsensordata.php
...
$refresh = ($_POST['refresh']);
$link_address="viewsensordata.php?view=".$view;
?>
<form method="post" action="<?php echo $link_address;?>">
<select id="refresh" name="refresh">
<option value="-">Select Seconds</option>
<option value="1">1 Second</option>
<option value="2">2 Seconds</option>
<option value="3">3 Seconds</option>
<option value="4">4 Seconds</option>
<option value="5">5 Seconds</option>
<option value="10">10 Seconds</option>
<option value="15">15 Seconds</option>
<option value="30">30 Seconds</option>
<option value="60">60 Seconds</option>
</select>
<input type="submit" value="Refresh" name="refresh_rate"/>
</form>
<meta http-equiv="Refresh" content="<?php echo $refresh;?>;URL=refreshsensorData.php">
<br />
And I want to get the value of the $refresh to another page named viewsensordata2.php
In my viewsensordata2.php i have $refresh = ($_GET['refresh']); in order to GET it from the other page but it doesnt work. How can I fix that?

Answer 1

<?php
$link_address="viewsensordata.php?view=".$view;
?>
<form method="post" action="<?php echo $link_address;?>">
<select id="refresh" name="refresh">
<option value="-">Select Seconds</option>
<option value="1">1 Second</option>
<option value="2">2 Seconds</option>
<option value="3">3 Seconds</option>
<option value="4">4 Seconds</option>
<option value="5">5 Seconds</option>
<option value="10">10 Seconds</option>
<option value="15">15 Seconds</option>
<option value="30">30 Seconds</option>
<option value="60">60 Seconds</option>
</select>
<input type="submit" value="Refresh" name="refresh_rate"/>
</form>
Then in your second page, you can refresh it like this:
<?php
if(isset($_POST) && isset($_POST['refresh'])){
$sec = $_POST['refresh'];
}
elseif(isset($_GET) && isset($_GET['seconds'])){
$sec = $_GET['seconds'];
}
else{
$sec = 10; // your defualt seconds, if it is not set from form or URL
}
?>
<meta http-equiv="Refresh" content="<?php echo $sec ;?> URL=<?php echo $_SERVER['PHP_SELF']; ?>?seconds=$sec">