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@NogDogJun 06.2005 — #I don't know of anyway to trap that on the server side.
What you can do is create a hidden field in your form and set its value to a unique ID using PHP's uniqid() function. When the form-handler receives the form data, it can store that ID in a session variable, and check subsequent requests for a duplicate ID and reject it if so:
Form:
Handler:
checking if a "refresh" was done!
how can i check if the user pressed “F5” (refresh?)
beacuse for example if he has filled out data in a table and after i hhave aupdated he presses F5 the update will be done again!
how can i find thatout and even prevent it?
thnaks i nadvance
peleg
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@NogDogJun 06.2005 — #I don't know of anyway to trap that on the server side.What you can do is create a hidden field in your form and set its value to a unique ID using PHP's uniqid() function. When the form-handler receives the form data, it can store that ID in a session variable, and check subsequent requests for a duplicate ID and reject it if so:
Form:
[code=php]
<input type=hidden name=id value="<?php echo uniqid() ?>">
[/code]Handler:
[code=php]
<?php
session_start();
if(isset($_SESSION['id']) and $_SESSION['id'] == $_POST['id'])
{
echo "<p>ERROR: Transaction already processed. Please do not resubmit the formn";
echo "or refresh the page.</p>n";
}
else
{
$_SESSION['id'] = $_POST['id'];
# do your form processing here.
}
?>
[/code]