Phát triển web với PHP và MySQL - p 36 pot
Phát triển web với PHP và MySQL - p 36 pot
... 15
15
I
MPLEMENTING
S
ECURE
TRANSACTIONS
333
HTTP FTP SMTP …
TCP/UDP
IP
Various
Application Layer
Transport Layer
Network Layer
Host to Network Layer
FIGURE 15.2
The protocol stack used by an application ... an application layer protocol. There are many other application layer protocols
such as FTP, SMTP and telnet (as shown in the figure), and others such as POP and IMAP.
TCP is one of two t...
Phát triển web với PHP và MySQL - p 8 potx
... the previous page!<br>”;
exit;
}
The call to exit stops PHP from executing the remainder of the script.
PHP Crash Course
C
HAPTER 1
1
PHP CRASH
COURSE
47
03 7842 CH01 3/6/01 3:39 PM Page ... the
include_path (set in your PHP configuration—see Appendix A, “Installing PHP 4 and
MySQL ) for a file. If you want to do this, set this parameter to
1. If you tell PHP to search the...
Phát triển web với PHP và MySQL - p 10 pot
... offered by file permissions, there is no easy way of enforcing different
levels of access to data.
Using PHP
P
ART I
66
04 7842 CH02 3/6/01 3:37 PM Page 66
Using PHP
P
ART I
70
This chapter shows ... array, giv-
ing us a total of four elements:
$products[3] = “Fuses”;
To display the contents, we could type
echo “$products[0] $products[1] $products[2] $products[3]”;
Like other PHP va...
Phát triển web với PHP và MySQL - p 13 pot
... up your PHP installation to point at your mail-sending
program. If the script doesn’t work for you in its current form, double-check Appendix A,
“Installing PHP 4 and MySQL. ”
Through this chapter, ... $total_shipping.
Each conversion specification follows the same format, which is
%[‘padding_character] [-] [width][.precision]type
Using PHP
P
ART I
98
06 7842 CH04 3/6/01 3:41 PM Pa...
Phát triển web với PHP và MySQL - p 14 pot
... expression syntax: POSIX and Perl. The POSIX style of
regular expression is compiled into PHP by default, but you can use the Perl style by compil-
ing in the PCRE (Perl-compatible regular expression) ... until the end of the string, which encodes as fol-
lows:
^[a-zA-Z 0-9 _]+@[a-zA-Z 0-9 \-] +\.[a-zA-Z 0-9 \-\ .]+$
The subexpression ^[a-zA-Z 0-9 _]+ means “start the string wit...
Phát triển web với PHP và MySQL - p 17 pot
... that spaces do not affect
how PHP processes the code.
In some languages, code blocks affect variable scope. This is not the case in PHP.
Recursion
Recursive functions are supported in PHP. A recursive ... loop. The output from this example is as follows:
Using PHP
P
ART I
142
07 7842 CH05 3/6/01 3:35 PM Page 142
Line 1
Line 2
Line 1
Line 2
Line 1
Line 2
Because the code in these exam...
Phát triển web với PHP và MySQL - p 24 pot
... quantity |
+ + + +
| 1 | 0-6 7 2-3 169 7-8 | 2 |
| 2 | 0-6 7 2-3 176 9-9 | 1 |
| 3 | 0-6 7 2-3 176 9-9 | 1 |
| 3 | 0-6 7 2-3 150 9-2 | 1 |
| 4 | 0-6 7 2-3 174 5-1 | 3 |
+ + + +
Retrieving Data with Specific Criteria
In ... “02-Apr-2000”),
(NULL, 1, 49.99, “15-Apr-2000”),
(NULL, 2, 74.98, “19-Apr-2000”),
(NULL, 3, 24.99, “01-May-2000”);
insert into books values
(“...
Phát triển web với PHP và MySQL - p 25 pot
... the out-
put is row number zero.
This is very useful for Web applications, such as when the customer is browsing through prod-
ucts in a catalog, and we want to show 10 items on each page.
Updating ... orders placed by a particular customer matched up with that cus-
tomer.
We achieve this by placing a join condition in the WHERE clause. This is a special type of condi-
tional statement that...
Phát triển web với PHP và MySQL - p 27 potx
... mysql_ num_rows($result);
13 7842 CH10 3/6/01 3 :36 PM Page 236
Further Reading
For more information on connecting MySQL and PHP together, you can read the appropriate
sections of the PHP and MySQL ... using MySQL databases from PHP. We’ll just briefly look at some of
the other useful functions that we haven’t talked about yet.
Other Useful PHP- MySQL Functions
There are some...
Phát triển web với PHP và MySQL - p 28 pot
... to implement the projects in Part 5, “Building
Practical PHP and MySQL Projects.”
User Privileges
Knowledge is power. Make sure that you understand MySQL s privilege system, and the con-
sequences ... be
interpreted as PHP so that the details cannot be viewed in a Web browser.
Don’t store passwords in plain text in your database. MySQL passwords are not stored that
way, but commonl...
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