Re: [PHP] New to PHP form attributes

[Marek Kilimajer]

You should use post method for forms that change state on the server, 
that way the user gets a warning. And you should redirect after 
processing the form to another page.

if($_GET['action']=='submit') {
        INSERT INTO table VALUES (NULL, '$_GET[input]'
        header('Location: ...');
} else {
        <form action="<? PHP_SELF ?>?action=submit" method="POST">
        <input type="text" name="input">
        </form>
}
Matthew Oatham wrote:

Hi,

I am new to PHP and am more used to JSP. My question is - if I submit a 
form to a php3 page using action=="<? PHP_SELF ?>"  for some processing 
all is well I can see that form data. After the processing the page is 
redisplayed - but the data originally sent persits (in the request) this 
can be a pain if the user was to hit the refresh button then the data is 
submitted to the server again and if for example the php page does an 
insert into a database then a new row would be created etc...

Is this normal behaviour of php and jsp ? I am not sure but I am 
noticing it now with php ? Should I be clearing the data from the 
request somehow after I have done my processing?

Thanks

Matt

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