Notify Url: The URL to which PayPal posts information about the 
transaction via Instant Payment Notification. Must be URL-
encoded. Its an optional field have maximum 256 characters 
length.
Return url: The URL to which the customer's browser is returned 
after completing the payment; for example, a URL on your site 
that displays a "Thank you for your payment" page.
Default: customer is taken to the PayPal website.  Optional  
rm Return method GET or POST: the FORM METHOD used to send data 
to the URL specified by the return variable after payment 
completion.
 More information is available at 
https://www.paypal.com/IntegrationCenter/ic_std-variable-ref-
buy-now.html

yes

value of Last textbox will be received.

i thought it would be the first one

yes... value of last textbox will be received.

no.cannot.

Last value will store

value of Last textbox will be received.

first textbox value only.

PayPal Recurring Payments allows you to bill a buyer for a 
fixed amount of money on a fixed schedule. The buyer signs 
up for recurring payments during checkout from your site. 
Consider the following examples: 

A buyer purchases a subscription to a magazine or 
newsletter from your site and agrees to pay a monthly fee. 
A buyer agrees to pay an Internet Service Provider a flat 
fee on a semi-annual basis to host a website. 
These examples represent payment transactions that reoccur 
periodically and are for a fixed amount.
When you create recurring payments for a buyer, you create 
a recurring payments profile. The profile contains 
information about the recurring payments, including details 
for an optional trial period and a regular payment period. 
Each of these subscription periods contains information 
about the payment frequency and payment amounts, including 
shipping and tax, if applicable.

After a profile is created, PayPal automatically queues 
payments based on the billing start date, billing 
frequency, and billing amount, until the profile expires or 
is canceled by the merchant. The buyer can also cancel the 
recurring payment profile for profiles creating using 
Express Checkout.

Note that for profiles created using Express Checkout, the 
queued payments are funded using the normal funding source 
hierarchy within the buyer's PayPal account.

After the recurring payments profile is created, you can 
view recurring payments details or cancel the recurring 
payments profile from your PayPal account.You can also 
access recurring payments reports from the PayPal Business 
Overview page. 
More information about recurring payment is available at
https://www.paypal.com/IntegrationCenter/ic_recurringpayment
s.html

<?php include("example_script.php"); ?>

You can use require function as well and it is  a 
recommended one..


require("file.php");
reqiure_once("file.php");//will giv a warning msg wen u 
include it, the next time by mistake.

You can use require function as well and it is  a 
recommended one..


require("file.php");
reqiure_once("file.php");//will giv a warning msg wen u 
include it, the next time by mistake.

MySQL has support for full-text indexing and searching. A 
full-text index in MySQL is an index of type FULLTEXT. 
FULLTEXT indexes can be used only with MyISAM tables; they 
can be created from CHAR, VARCHAR, or TEXT columns as part 
of a CREATE TABLE statement or added later using ALTER 
TABLE or CREATE INDEX. For large datasets, it is much 
faster to load your data into a table that has no FULLTEXT 
index, and then create the index afterwards, than to load 
data into a table that has an existing FULLTEXT index. 

Constraints on full-text searching are listed in Section 
12.7.4, “Full-Text Restrictions”. 

Full-text searching is performed with the MATCH() function. 

mysql> CREATE TABLE articles (
    ->   id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY 
KEY,
    ->   title VARCHAR(200),
    ->   body TEXT,
    ->   FULLTEXT (title,body)
    -> );

GD library

yes

imagecreate(W,H)

extension=php_gd2.dll

you need to open an extension for gdlibrary in the php.ini 
file. and then use simple image functions as suggested by 
Munesh

refer this link for uploading
  	

http://php-mysql-javascript-css.blogspot.com/

for files downloading you can use headers .

<?php
// We'll be outputting a PDF
header('Content-type: application/pdf');

// It will be called downloaded.pdf
header('Content-Disposition: attachment;
filename="downloaded.pdf"');

// The PDF source is in original.pdf
readfile('original.pdf');
?>

uploading is down using html file tag and later on moved to 
the destination location.

for downloading we can use the pdf format so once we click 
on the link the pdg format of the file will be downloaded

isset -> this variable handling functions determine whether 
a variable is set . It checks whether a variable is set 
even though it is empty.

empty -> as the term itself has already given a sign that 
it would related to something that's empty, this variable 
handling functions determine whether a variable is empty. 
It checks whether a variable has a value whether it's empty 
string, zero(0), or not set at all.

isset is used for checking whether variable is set or not 
and empty checks whether it is empty

actually, !isset and empty are one and same thing...

procedure_name(a in number,b out varchar)
		(
			script of execution;

		)
		exec procedure_name(first_parameter,second_parameter);

create or replace procedure p_name(p_no in out number)
is begin
{
executable statement
}
end p_name;
/

create or replace procedure <pocedure_name>(x in number,y 
out varchar) is begin
                {
			executable statements;

		}
end <procedure_name>;

exec <procedure_name>(first_parameter,second_parameter);

<procedure_name>(in_parameter_value, 
out_parameter_variable);

create or replace procedure <pocedure_name>(x in number,y 
out number) is begin
                {
			executable statements;

		}
end <procedure_name>;

exec <procedure_name>(10,y);

See the example below...

create or replace procedure addn(a in number,b in number, c 
out number)
 is
 begin
 c:=a+b;
 dbms_output.put_line(c);
 end addn;

Now we can call the in and out parameters as

declare a variable for the out parameter as

var n number;
exec addn(5,10,:n);
print n;

Thanks yaar !!!!!!!!

no. because if we use more than one, it leads to  
duplicate, which effects the fundamental property of unique 
key.

We can insert more than one null into table

No, we can't use more than one null value for unique key. 
Unique means it doesn't accept duplicate values.

We can insert any number of null values in the column which 
contains the unique key
the reason is NULL is not equal to anothere NUll
so each null is different so there is no question of 
duplication

If we use more than one, it leads to  
duplicate, which effects the fundamental property of unique 
key.

But......
We can insert any number of null values in the column which 
contains the unique key.
The reason is NULL is not equal to anothere NUll
so each null is different so there is no question of 
duplication

Yes,We should .That's the significance of Unique Key

If you insert data into Unique Key column it checks for the 
uniqueness of THIS NON NULL UNIQUE COLUMNAR DATA

no, because duplicate value is not allowed in unique. so 
thats why we can enter only one null value.

Unique in similar to primary key  but one difference's
primary key  duplicate records not allow and not null value
and uniquie allow one null value and duplicate records

Yes , More than one field can be NULL in a unique Key 
column. Because a Null values is not equal to another null 
value. So, no duplicate value is there.

yes,we can use more than one null value for unique key.
Bcz all null values are unique,
thing is that null is unknown ,unassignable, 
undefind ,inapplicable value and allwase null is not equal 
to null and any arithimitic operation and logical 
comparision all wase result null

no because primary key is the unique value of the table that
can not allow null&duplicate value.
so it is not possiblity use more than one null value and
duplicate valu

Yes, We can insert more the one NULL with unique key.
cos, Neither null is equal to null Nor null is not equal to
null.

No, we cannot use more than one null value in unique key.
This is the major difference between primary key and unique 
key.

Primary key cannot contain null values

Whereas unique key can contain only one null value

Yes ,we can insert more null value in a table having unique 
key,Bcoz one null vale is different frm another null value.

Fundamental principle is 2 nulls are not unique. U can 
insert N number of nulls in a unique its CONCRETE

form.submit();

document.FORM_NAME.action="page.php";
document.FORM_NAME.submit();

Javascript form submit

document.FORM_NAME.action="page.php";
document.FORM_NAME.submit();

you can call a function in javascript onclick event of any 
form element/link and in the function you  use any 
document.formName.submit(); to submit the form

and above all ans is rights

ys

Using curl

by javascript

1 Function OnChange();
2. Function OnClick()

Use image element instead submit button
<input type="img" src="img_path/img_name.src">
give the action page name as action attribute in form 
element like
<form name="myform' action="myaction.php">
The Image element will work very similar as submit button.

on the page unload event write down the submit coding. or 
use onBlur event thats also the same functionality. and 
call the java script function on Blur. it will submit the 
page on closing you dont need to press submit button.