Specify A Php Function

ienabellamy

Hello ! i've this portion of code in a file:

validation.php

$paypal->validateOrder($_POST['custom'], _PS_OS_PAYMENT_, $price, $paypal->displayName, $paypal->getL('transaction').$_POST['txn_id']);

That function is declared in another file

PaymentModule.php

public function validateOrder($id_cart, $id_order_state, $amount_paid, $payment_method = 'Unknown',
$message = null, $extra_vars = array(), $currency_special = null, $dont_touch_amount = false,
$secure_key = false, Shop $shop = null)
{CONTENT FUNCTION}

I want that $paypal->validateOrder calls another file, for example PaymentModuleMod.php that will contains the same function little modified.

in which way can i do this ? and for just curiosity, in which way the system KNOWS that validateOrder() is in PaymentModule.php ? is that $paypal-> that specify this ?

Thanks, i'm trying to modify some Prestashop's modules 😉 Thanks to ALL!!

p.s. i tried to integrate the function directly in the validation.php and i also tried to replace the VALUES, but doesn't work 'cause i wrong something :-/

bradgrafelman

ienabellamy;11015643 wrote:
That function is declared in another file

Technically it's not just a function - it's more accurately called a method.

ienabellamy;11015643 wrote:
I want that $paypal->validateOrder calls another file

This makes no sense; PHP can't "call a file". PHP simply executes whatever function/method you tell it to, no matter where that function/method was defined.

ienabellamy;11015643 wrote:
in which way can i do this ?

There are many theoretical ways to do this, but which one is the right way to do this really depends on exactly what it is you're trying to do. For example, you could create a function that takes in whatever arguments it needs, perhaps including an object (e.g. $paypal) so that it can in turn call one of that object's methods (such as validateOrder()). You could also do it in the reverse order; modify the validateOrder() method such that it calls your new function (again, with whatever parameters it needs).

ienabellamy;11015643 wrote:
and for just curiosity, in which way the system KNOWS that validateOrder() is in PaymentModule.php ?

It doesn't. It just knows that for whatever class $paypal is an instance of, there is a method named validateOrder.

ienabellamy;11015643 wrote:
is that $paypal-> that specify this ?

Technically; see response above.

ienabellamy

Thanks bradgrafelman !

your explanation was really useful, so thank you !

my scope is that i can't modify PaymentModule.php because is a system's file, i wish integrate that function in the same file (validation.php), like this:

and in which way can i specify that the function is in the same file when function is called ? like

validateOrder($_POST['custom'], _PS_OS_PAYMENT_, $price, $paypal->displayName, $paypal->getL('transaction').$_POST['txn_id']);

public function validateOrder($id_cart, $id_order_state, $amount_paid, $payment_method = 'Unknown', $message = null, $extra_vars = array(), $currency_special = null, $dont_touch_amount = false, $secure_key = false, Shop $shop = null) {CONTENT FUNCTION}

is it correct ? because i tried and it doesn't work :-/

ienabellamy

Hi all ! i solved ! i simply replicated the function, with my fixes, i called it "validateOrderMod" (declared in the same class $paypal), and so, the new method is: $paypal->validateOrderMod

So i call the new "method"

Thanks to all, i'm real new to the Object style programming, i'm coming from old style, Ansi C, and is real difficult understand object oriented php language. Thanks to all again and special thanks to bradgrafelman 😉

dalecosp

Hey, welcome to PHP, and to PHPBuilder!

ienabellamy wrote:
i'm coming from old style, Ansi C, and is real difficult understand object oriented php language.

Old style C? Awesome 🙂

I have a little trouble wrapping my head around OOP concepts as well. Practicing Javascript has actually helped somewhat with that. You may not be familiar with that either, of course.

I've actually seen OOP-type code in C ... occasional use of the "->" operator, anyway, and "new Foo" with constructors and so on. My C's pretty poor and I'm not exactly sure what it was doing 😃

You probably are aware that JS notates things like "document.forms.form3.input" or "object.method()" and so on.

PHP uses "->" instead: $object->property and $object->method(); You can call a class from somewhere else with "foo::bar();" You probably know that, too!

I've found RT(Friendly)M to be helpful, but so boring 😉 I just keep plugging away, using OOP concepts whenever apropos ... which is what should be done anyway. Although I've done it for the sake of saying so, I see little point in using OOP to render HTML pages! 😃