Calling a PHP function within a form

dleone

I'd like to call a PHP function using the onsubmit() handler but not sure if it is possible to call PHP within Javascript. Or, use another method. My form is such...

What I need to achieve is a way to only execute some small chunk of PHP code if the form is submitted. And, of course NOT executed prior to that...

-Thanks, Don
😕

Natty_Dreadlock

hi,
u can call a php function by settin some http-var and then checkin this inside your script, e.g.
The form

<form method="POST" name="form1" action="run.php">
<input type="hidden" name="action" value="func1" />
<input type="submit" value="Run function 1">
</form>
<form method="POST" name="form2" action="run.php">
<input type="hidden" name="action" value="func2" />
<input type="submit" value="Run function 2">
</form>

The php script check.php

if($_POST["action"] == "func1")
{
// Perform function 1
echo "function 1 doin somethin";
}
else if($_POST["action"] == "func2")
{
// Perform function 2
echo "function 2 doin somethin";
}
else
{
echo "no valid action given";
}

Now, when u click "Run function 1", u'll see the text for func1 etc. So u got the basic idea?
hth

dleone

Thanks - and yes I understand. Not sure if it will apply my specific instance. See the code below that I actually want to convert to make this happen. This is for PayPal on my website. I want when a user hits the "add to cart" button to then update the databse on my site with an inventory change and then send me an email and I can easily do that using PHP. But, using this method the page is not sent to the server, because the action calls Paypal's website. See the code snippent. Any ideas?

Natty_Dreadlock

first, pass the input to some of your pages, i.e.change the forms action to preprocess.php.
In there, read the post values set before and do with em whatever u want. When finished, output the form again - slightly modified, this time with the paypal url as the action, add a name attrib (e.g. orderform) to the form tag and add the following event handler to the body tag: onLoad="document.orderform.submit()"
This will make the form be automagically submitted to paypal when the page has been loaded.
The only drawback is that the user need javascript to send his order, but it's necessary since in php it's not easy (maybe there's some module that can do, have a look at http://de3.php.net/curl ) to pass post data to some other page.
Curl might help u, since it can pass post params (have a look at curl_setopt), but i'm not very experienced with it. however, if u don't want to rely on javascript, it's probably the best alternative.
hth

dleone

Understand perfectly. I'll be uploading some code tonight. Looks like I will automate sales to the point that once an item is bought, I will be notified via email, cell and the item removed from the site so it can't be bought twice !! And, I updated my orderinformation page to let users know that javascript is required to process orders...

THANKS !!!
-Don

dleone

This works to a point; it does all my pre-processing, but then never submits the form. ...

<?php
"pre=processing running correctly, now add to paypal cart..."
?>
<html>
<head>
</head>
<body bgcolor="#FFFFFF" onLoad="paypal.submit();>
<form name="paypal" target="self" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="cart">
<input type="hidden" name="business" value="mine!">
<input type="hidden" name="item_name" value="<?php echo $row['title']; ?>">
<input type="hidden" name="item_number" value="<?php echo $row['item_no']; ?>">
<input type="hidden" name="amount" value="<?php echo $row['price']; ?>">
<input type="hidden" name="return" value="blah blah">
<input type="hidden" name="cancel_return" value="blah blah">
<input type="hidden" name="cn" value="Special Instructions:">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="add" value="1">
</form>
</body>
</html>

Natty_Dreadlock

try replacin onLoad="paypal.submit(); with onLoad="document.paypal.submit();
this should solve your problem...

dleone

Still no go; if you check the source, the form is now in the page but never executed where as before it was not in the source.

dleone

I am an idiot; left off a " at the end of the javascript call...

Thanks again..

ethos

If the problem's been resolved please mark the thread as resolved with the link at the bottom...