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Posted by Schmidty on 01/24/07 16:23
On Jan 24, 1:26 am, Erwin Moller
<since_humans_read_this_I_am_spammed_too_m...@spamyourself.com> wrote:
> Schmidty wrote:
> > So if I do a $_SERVER['PHP_SELF'] in a function within a class that
> > will end the execution of that class and restart the same script? Do I
> > need to do all processing in a script before I display a page that will
> > have a $_SERVER['PHP_SELF'] action? Thanks for the help...
>
> > SchmidtyHi,
>
> Please don't toppost. It destroys the order of the conversation.
> $_SERVER['PHP_SELF'] is just a string that contains the script that is being
> executed.
> I do not understand what 'doing a $_SERVER['PHP_SELF'] in a function' means.
> But it will most probably NOT terminated the execution of the script.
> exit(); does.
>
> You must clearly see the difference between the server and the client
> (browser).
>
> Your script produces a form that will be send back to the client (=browser).
> Then your script ends.
> The form action in your example posts back to the same script (because you
> used the target for the action $_SERVER['PHP_SELF']), so if anybody presses
> submit, that form will be posted, and hence the same script will be
> executed as before.
> But the server or PHP couldn't care less, and thinks of it as just another
> call to that script.
>
> http-protocol is stateless, this means that NO lasting connection is build
> between the client and the server. To overcome this you must use sessions.
>
> And as Jerry said: connections to a database are NOT fit to store in a
> session because PHP destroys all existing connections when the script ends.
> So you'll have to rebuild your connection each invocation of a script that
> needs a database.
>
> Hope this helps.
>
> Regards,
> Erwin Moller
>
>
>
>
>
> > On Jan 23, 4:54 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> >> Schmidty wrote:
> >> > If you do a page reload with $_SERVER['PHP_SELF'] will your program
> >> > lose a mysqli connection upon the reload of the page? Would this code
> >> > work? I need to know how to carry over a connection between methods as
> >> > I am new to OOP? Thanks...
>
> >> > Example; ========================================
> >> > <?php
> >> > // webpage
> >> > $newsignon = new newuser();
> >> > logon();
>
> >> > if (isset($_POST['submit'])){
> >> > $newsignon = query("SELECT name, password FROM
> >> > database");
> >> > }
> >> > ?>
> >> > <?php
> >> > // class newuser
>
> >> > class newuser {
> >> > public $name;
> >> > private $passwd;
> >> > private $mysqli;
>
> >> > function __construct(){
> >> > include('dbconn.php');
> >> > $mysqli = new mysqli($dbnet, $dbuser, $dbpass, $dbname);
> >> > if (mysqli_connect_errno()){ printf("Can't connect to MySQL
> >> > Server. Errorcode: %s\n", mysqli_connect_error());
> >> > exit;
> >> > }
> >> > $this->mysqli = $mysqli; // is this right?
> >> > } //end constructor
>
> >> > function query($query){
> >> > if ($result = $this->mysqli->real_query($query)){
> >> > $result = $this->mysqli->store_result();
> >> > if($this->mysqli->error) { echo "ERROR with mysqli stored
> >> > procedure";}
> >> > } // end if
>
> >> > } // end function
>
> >> > function logon(){
> >> > echo "<form action='".$_POST['PHP_SELF']."' method='post' >";
> >> > // Would this work?
> >> > echo "<input type='text' name='user' /><br /><input
> >> > type='password' name='passwd' />";
> >> > echo "<input type='submit' value='submit' />";
>
> >> > } // end function
>
> >> > } //end classSchmidty,
>
> >> As I explained in comp.database.mysql, you can't. Once a page's
> >> processing is completed, all connections (and objects) are released.
>
> >> You can keep information like user ids, etc. in the $_SESSION variable,
> >> but not the connection. Even if you could keep the connection info in
> >> there, the connection itself will be closed.
>
> >> Each page is it's own little program. Any external resources opened by
> >> it are closed at the end of the page processing.
>
> >> --
> >> ==================
> >> Remove the "x" from my email address
> >> Jerry Stuckle
> >> JDS Computer Training Corp.
> >> jstuck...@attglobal.net
> >> ==================- Hide quoted text -- Show quoted text -
Thanks Erwin
The Google Groups editor places your reponse at the top when making a
reply. I went ahead posted at the bottom for you...
I understand that HTTP is stateless and I have been using sessions
variables and understand that you can't carry a database connection
through either one. I was confused on what happens with an
$_SERVER['HTTP_SELF'] in a script. What I meant by "doing a
$_SERVER['PHP_SELF'] in a function" is having a page echoed in a
function and having the 'action' of that page execute a
$_SERVER['HTTP_SELF']. Does it end a mysqli connection even though you
have not exited the script? Your explanation that $_SERVER['PHP_SELF']
is just a string that contains the script that is being executed makes
sense. I wasn't sure if the connection was being terminated by the
$_SERVER['HTTP_SELF'] variable. Thanks for the help in understanding
this. :)
Schmidty
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