09 web course_-_php_nang_cao
- 1. L?p tr¨¬nh v¨¤ Thi?t k? Web 1
Ba?i 9
PHP n?ng cao
Khoa CNTT ¨C ?H.KHTN
? 2007 Khoa C?ng ngh? th?ng tin
- 2. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
N?i dung
? K? thu?t Upload File b?ng PHP
? K? thu?t g?i mail b?ng PHP
? S? d?ng Cookie trong PHP
? S? d?ng Session trong PHP
? 2007 Khoa CNTT - ?HKHTN
- 3. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
N?i dung
? K? thu?t Upload File b?ng PHP
? K? thu?t g?i mail b?ng PHP
? S? d?ng Cookie trong PHP
? S? d?ng Session trong PHP
? 2007 Khoa CNTT - ?HKHTN
- 4. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
K? thu?t Upload File b?ng PHP
? C? ch? Upload File
? Thi?t k? Form ?? Upload File
? Thi?t k? trang x? l? File ???c upload tr¨ºn server
? Ki?m tra l?i, ??nh d?ng, k¨ªch th??c File upload
? V?n ?? quy?n truy c?p file
? 2007 Khoa CNTT - ?HKHTN
- 5. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
C? ch? Upload File
Y¨ºu c?u trang upload.php
Webserver
file
Disk
driver
Upload.php
? $_FILES[¡°file¡±]["name"]
? $_FILES[¡°file¡±]["type"]
? $_FILES[¡°file¡±]["size"]
? $_FILES[¡°file¡±]["tmp_name"]
? $_FILES["file¡±]["error"]
? 2007 Khoa CNTT - ?HKHTN
- 6. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Thi?t k? Form ?? Upload File
? Thi?t l?p thu?c t¨ªnh Form
¨C Method = POST
¨C Enctype = multipart/form-data
--- UploadForm.htm ---
<form method="POST" action=¡°upload.php¡± enctype=¡°multipart/form-data¡±>
<input type=¡°FILE¡± name =¡°ProductImg¡±><br>
<input type=¡°submit¡± value=¡°Submit">
</form>
? 2007 Khoa CNTT - ?HKHTN
- 7. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Thi?t k? trang x? l? File ???c upload tr¨ºn server
move_uploaded_file(tmp_name, saved_name)
--- Upload.php ---
<?php
move_uploaded_file($_FILES["ProductImg"]["tmp_name"],
"upload/" . $_FILES["ProductImg"]["name"]);
echo "Upload: " . $_FILES["ProductImg"]["name"] . ¡°<br>¡±;
echo "Type: " . $_FILES["ProductImg"]["type"] . ¡°<br>¡±;
echo "Size: " . ($_FILES["ProductImg"]["size¡°]/1024) . ¡°Kb<br>¡±;
echo ¡°Temp. Stored in: " . $_FILES["ProductImg"]["tmp_name"];
?>
? 2007 Khoa CNTT - ?HKHTN
- 8. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Ki?m tra l?i, ??nh d?ng, k¨ªch th??c File upload
? L?u ? :
¨C $_FILES[¡°¡¡±][¡°type¡±]
? ¡°image/gif¡±
? ¡°image/jpeg¡± ? Firefox nh?n ??y l¨¤ file jpeg
? ¡°image/pjpeg¡± ? IE nh?n ??y l¨¤ file jpeg
¨C $_FILES[¡°¡¡±][¡°size¡±] : K¨ªch th??c file t¨ªnh theo byte
¨C $_FILES[¡°¡¡±][¡°error¡±] : M? l?i khi upload File
? = 0 : Kh?ng c¨® l?i
? > 0 : C¨® l?i
? 2007 Khoa CNTT - ?HKHTN
- 9. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
V?n ?? v? quy?n truy c?p File
PHP Warning:
move_uploaded_file(upload/14.jpg
) [function.move-uploaded-file]:
failed to open stream:
Permission denied in.
Account
IUSR_XXX
L?u ? :
? Ch? c?p quy?n ghi cho th? m?c c?n thi?t
? Kh?ng c?p quy?n ghi cho th? m?c WebRoot
? 2007 Khoa CNTT - ?HKHTN
- 10. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
N?i dung
? K? thu?t Upload File b?ng PHP
? K? thu?t g?i mail b?ng PHP
? S? d?ng Cookie trong PHP
? S? d?ng Session trong PHP
? 2007 Khoa CNTT - ?HKHTN
- 11. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
K? thu?t g?i Email b?ng PHP
? S? d?ng th? vi?n open source: PHP Mailer
http://phpmailer.sourceforge.net/
? Ch¨¦p 3 file: class.phpmailer.php, class.smtp.php,
phpmailer.lang-en.php v¨¤o th? m?c web c?a site
? 2007 Khoa CNTT - ?HKHTN
- 12. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
K? thu?t g?i Email b?ng PHP
? G?i email s? d?ng Mail Server c?a GMail
? 2007 Khoa CNTT - ?HKHTN
- 13. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
N?i dung
? K? thu?t Upload File b?ng PHP
? K? thu?t g?i mail b?ng PHP
? S? d?ng Cookie trong PHP
? S? d?ng Session trong PHP
? 2007 Khoa CNTT - ?HKHTN
- 14. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Cookie ¨C Gi?i thi?u
cookie
$_COOKIE
setcookie
Client Webserver
? L¨¤ 1 t?p tin ???c server l?u xu?ng m¨¢y c?a client
? M?i l?n client g?i request 1 trang web, ??ng th?i s? g?i k¨¨m file cookie
?? l?u l?n tr??c l¨ºn server
? Vi?c x? l? th?ng tin (l?u, l?y) trong cookie do server th?c hi?n
? Th??ng ???c s? d?ng ?? l?u th?ng tin c¨¢ nh?n c?a client
? 2007 Khoa CNTT - ?HKHTN
- 15. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Cookie ¨C C¨² ph¨¢p s? d?ng
? L?nh ghi cookie
setcookie(name, value, expire, path, domain);
setrawcookie(name, value, expire, path, domain);
? name : T¨ºn cookie
? value : Gi¨¢ tr? cookie
? expire : Th?i ?i?m m¨¤ cookie h?t hi?u l?c
? path : ???ng d?n tr¨ºn server m¨¤ cookie c¨® hi?u l?c
? domain : X¨¢c ??nh t¨ºn mi?n m¨¤ cookie ???c g?i ?i
? B?t bu?c ph?i xu?t hi?n tr??c th? <html>
? L?y gi¨¢ tr? cookie
echo $_COOKIE[¡°cookieName"];
? X¨®a cookie
setcookie(¡°cookieName", "", time() -3600);
? 2007 Khoa CNTT - ?HKHTN
- 16. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Cookie ¨C V¨ª d?
$_COOKIE[fieldName]
cookie
L?u username & password
setcookie
Client
Webserver
? 2007 Khoa CNTT - ?HKHTN
- 17. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
N?i dung
? K? thu?t Upload File b?ng PHP
? K? thu?t g?i mail b?ng PHP
? S? d?ng Cookie trong PHP
? S? d?ng Session trong PHP
? 2007 Khoa CNTT - ?HKHTN
- 18. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session
$_SESSION[sessionVar]
Cookie: PHPSESSID
session_start
Client Webserver
? L¨¤ th?ng tin v? client ???c server l?u tr¨ºn m¨¢y c?a server
? S? d?ng session l?u ??nh danh duy nh?t cho t?ng client
? M?c ?¨ªch l?u bi?n d? li?u d¨´ng chung cho nhi?u trang trong
1 phi¨ºn l¨¤m vi?c c?a client
? 2007 Khoa CNTT - ?HKHTN
- 19. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session ¨C C¨² ph¨¢p s? d?ng
? Kh?i ??ng Session
session_start();
¨C B?t bu?c ph?i xu?t hi?n tr??c th? <html>
? Ghi & ??c gi¨¢ tr? Session
$_SESSION[¡°sessionVar¡±] = $value ;
$_SESSION[¡°sessionVar¡±] = array();
$_SESSION[¡°sessionVar¡±][] = $value;
if (isset($_SESSION[¡°sessionVar"])
echo $_SESSION[¡°sessionVar"];
? H?y Bi?n trong Session
unset($_SESSION[¡°sessionVar¡±]);
? H?y c? Session
session_destroy();
? 2007 Khoa CNTT - ?HKHTN
- 20. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session ¨C V¨ª d? : ??m s? l?n duy?t trang web
<?php
session_start( );
if (isset($_SESSION["count"]))
$_SESSION["count"] = $_SESSION["count"] + 1;
else
$_SESSION["count"] = 1;
print ¡°You've looked at this page ¡± . $_SESSION['count'] . ¡°times.¡±;
?>
? 2007 Khoa CNTT - ?HKHTN
- 21. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login
? L¨¤m th? n¨¤o ?? ng?n kh?ng cho ng??i d¨´ng truy c?p
v¨¤o c¨¢c trang web n?u ch?a ??ng nh?p?
? ? t??ng
¨C D¨´ng c¨¢c bi?n Session ?? l?u tr?ng th¨¢i ??ng nh?p c?a ng??i
d¨´ng:
$_SESSION[¡°IsLogin¡±] = true/false : L?u tr?ng th¨¢i ??ng nh?p
$_SESSION[¡°Username¡±] : L?u T¨ºn ??ng nh?p
$_SESSION[¡°Authentication¡±] : L?u Lo?i quy?n ??ng nh?p
? 2007 Khoa CNTT - ?HKHTN
- 22. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login ¨C G?m 4 b??c
1. T?o trang login.htm y¨ºu c?u ng??i d¨´ng ??ng nh?p.
2. T?o trang validateuser.php x? l¨ª th?ng tin ??ng nh?p t? trang
login.htm
¨C K?t n?i v?i CSDL, ki?m tra th?ng tin ??ng nh?p c¨® h?p l? hay kh?ng ?
? N?u kh?ng h?p l? th¨¬ cho redirect v? trang login.htm.
? N?u h?p l? th¨¬ d¨´ng m?t bi?n trong Session ?? l?u tr?ng th¨¢i login th¨¤nh c?ng
¨C V¨ª d?: $_SESSION[¡°IsLogin¡±] = true.
¨C L?u ?: Ph?i ??t gi¨¢ tr? m?c ??nh cho bi?n Session n¨¤y l¨¤ false khi kh?i t?o
m?t Session.
3. T?o trang logout.php l¨¤ trang x? l? khi ng??i d¨´ng logout
? Reset tr?ng th¨¢i login l¨¤ ch?a ??ng nh?p ($_SESSION[¡°IsLogin¡±] = false).
? 2007 Khoa CNTT - ?HKHTN
- 23. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login
4. Trong t?t c? c¨¢c trang mu?n b?o m?t, th¨ºm ?o?n m? sau ?? ki?m tra
ng??i d¨´ng ?? ??ng nh?p hay ch?a, n?u ch?a th¨¬ redirect l?i trang
login.htm
<?php
session_start();
if (!isset($_SESSION[¡°IsLogin¡±]) || $_SESSION[¡°IsLogin¡±] == false)
header(¡°Location: login.htm¡±);
?>
? 2007 Khoa CNTT - ?HKHTN
- 24. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Gi? h¨¤ng (shopping cart)
X¨®a bi?n trong Session
{¡®Book1¡¯, ¡®Book2¡¯, ¡®Book3¡¯}
Session : Array : Mathang [ ] Ghi xu?ng CSDL
Session : Array : Soluong[ ]
{13, 2, 7}
? 2007 Khoa CNTT - ?HKHTN
- 25. L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
So s¨¢nh : Session ¨C Cookie ¨C Database
Cookie1
Cookie1
Session 1
Client 1
Cookie2
Cookie2 Web Server
Session 2 Session 3
Internet
Client 2 or Intranet
Database Server
Cookie3
Cookie3 Client 3
Th?ng tin chia s? V? tr¨ª Th?i gian S? client S? trang web
l?u tr? t?n t?i s? d?ng
Database/File Server D¨¤i Nhi?u Nhi?u
Session Server Ng?n 1 Nhi?u
Cookies Client D¨¤i 1 Nhi?u
? 2007 Khoa CNTT - ?HKHTN
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
C? ch? Upload File
Y¨ºu c?u trang upload.php
Webserver
file
Disk
driver
Upload.php
? $_FILES[¡°file¡±]["name"]
? $_FILES[¡°file¡±]["type"]
? $_FILES[¡°file¡±]["size"]
? $_FILES[¡°file¡±]["tmp_name"]
? $_FILES["file¡±]["error"]
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-5-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Thi?t k? trang x? l? File ???c upload tr¨ºn server
move_uploaded_file(tmp_name, saved_name)
--- Upload.php ---
<?php
move_uploaded_file($_FILES["ProductImg"]["tmp_name"],
"upload/" . $_FILES["ProductImg"]["name"]);
echo "Upload: " . $_FILES["ProductImg"]["name"] . ¡°<br>¡±;
echo "Type: " . $_FILES["ProductImg"]["type"] . ¡°<br>¡±;
echo "Size: " . ($_FILES["ProductImg"]["size¡°]/1024) . ¡°Kb<br>¡±;
echo ¡°Temp. Stored in: " . $_FILES["ProductImg"]["tmp_name"];
?>
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-7-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Ki?m tra l?i, ??nh d?ng, k¨ªch th??c File upload
? L?u ? :
¨C $_FILES[¡°¡¡±][¡°type¡±]
? ¡°image/gif¡±
? ¡°image/jpeg¡± ? Firefox nh?n ??y l¨¤ file jpeg
? ¡°image/pjpeg¡± ? IE nh?n ??y l¨¤ file jpeg
¨C $_FILES[¡°¡¡±][¡°size¡±] : K¨ªch th??c file t¨ªnh theo byte
¨C $_FILES[¡°¡¡±][¡°error¡±] : M? l?i khi upload File
? = 0 : Kh?ng c¨® l?i
? > 0 : C¨® l?i
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-8-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
V?n ?? v? quy?n truy c?p File
PHP Warning:
move_uploaded_file(upload/14.jpg
) [function.move-uploaded-file]:
failed to open stream:
Permission denied in.
Account
IUSR_XXX
L?u ? :
? Ch? c?p quy?n ghi cho th? m?c c?n thi?t
? Kh?ng c?p quy?n ghi cho th? m?c WebRoot
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-9-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Cookie ¨C C¨² ph¨¢p s? d?ng
? L?nh ghi cookie
setcookie(name, value, expire, path, domain);
setrawcookie(name, value, expire, path, domain);
? name : T¨ºn cookie
? value : Gi¨¢ tr? cookie
? expire : Th?i ?i?m m¨¤ cookie h?t hi?u l?c
? path : ???ng d?n tr¨ºn server m¨¤ cookie c¨® hi?u l?c
? domain : X¨¢c ??nh t¨ºn mi?n m¨¤ cookie ???c g?i ?i
? B?t bu?c ph?i xu?t hi?n tr??c th? <html>
? L?y gi¨¢ tr? cookie
echo $_COOKIE[¡°cookieName"];
? X¨®a cookie
setcookie(¡°cookieName", "", time() -3600);
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-15-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Cookie ¨C V¨ª d?
$_COOKIE[fieldName]
cookie
L?u username & password
setcookie
Client
Webserver
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-16-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session
$_SESSION[sessionVar]
Cookie: PHPSESSID
session_start
Client Webserver
? L¨¤ th?ng tin v? client ???c server l?u tr¨ºn m¨¢y c?a server
? S? d?ng session l?u ??nh danh duy nh?t cho t?ng client
? M?c ?¨ªch l?u bi?n d? li?u d¨´ng chung cho nhi?u trang trong
1 phi¨ºn l¨¤m vi?c c?a client
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-18-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session ¨C C¨² ph¨¢p s? d?ng
? Kh?i ??ng Session
session_start();
¨C B?t bu?c ph?i xu?t hi?n tr??c th? <html>
? Ghi & ??c gi¨¢ tr? Session
$_SESSION[¡°sessionVar¡±] = $value ;
$_SESSION[¡°sessionVar¡±] = array();
$_SESSION[¡°sessionVar¡±][] = $value;
if (isset($_SESSION[¡°sessionVar"])
echo $_SESSION[¡°sessionVar"];
? H?y Bi?n trong Session
unset($_SESSION[¡°sessionVar¡±]);
? H?y c? Session
session_destroy();
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-19-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session ¨C V¨ª d? : ??m s? l?n duy?t trang web
<?php
session_start( );
if (isset($_SESSION["count"]))
$_SESSION["count"] = $_SESSION["count"] + 1;
else
$_SESSION["count"] = 1;
print ¡°You've looked at this page ¡± . $_SESSION['count'] . ¡°times.¡±;
?>
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-20-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login
? L¨¤m th? n¨¤o ?? ng?n kh?ng cho ng??i d¨´ng truy c?p
v¨¤o c¨¢c trang web n?u ch?a ??ng nh?p?
? ? t??ng
¨C D¨´ng c¨¢c bi?n Session ?? l?u tr?ng th¨¢i ??ng nh?p c?a ng??i
d¨´ng:
$_SESSION[¡°IsLogin¡±] = true/false : L?u tr?ng th¨¢i ??ng nh?p
$_SESSION[¡°Username¡±] : L?u T¨ºn ??ng nh?p
$_SESSION[¡°Authentication¡±] : L?u Lo?i quy?n ??ng nh?p
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-21-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login ¨C G?m 4 b??c
1. T?o trang login.htm y¨ºu c?u ng??i d¨´ng ??ng nh?p.
2. T?o trang validateuser.php x? l¨ª th?ng tin ??ng nh?p t? trang
login.htm
¨C K?t n?i v?i CSDL, ki?m tra th?ng tin ??ng nh?p c¨® h?p l? hay kh?ng ?
? N?u kh?ng h?p l? th¨¬ cho redirect v? trang login.htm.
? N?u h?p l? th¨¬ d¨´ng m?t bi?n trong Session ?? l?u tr?ng th¨¢i login th¨¤nh c?ng
¨C V¨ª d?: $_SESSION[¡°IsLogin¡±] = true.
¨C L?u ?: Ph?i ??t gi¨¢ tr? m?c ??nh cho bi?n Session n¨¤y l¨¤ false khi kh?i t?o
m?t Session.
3. T?o trang logout.php l¨¤ trang x? l? khi ng??i d¨´ng logout
? Reset tr?ng th¨¢i login l¨¤ ch?a ??ng nh?p ($_SESSION[¡°IsLogin¡±] = false).
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-22-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Login
4. Trong t?t c? c¨¢c trang mu?n b?o m?t, th¨ºm ?o?n m? sau ?? ki?m tra
ng??i d¨´ng ?? ??ng nh?p hay ch?a, n?u ch?a th¨¬ redirect l?i trang
login.htm
<?php
session_start();
if (!isset($_SESSION[¡°IsLogin¡±]) || $_SESSION[¡°IsLogin¡±] == false)
header(¡°Location: login.htm¡±);
?>
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-23-320.jpg)
![L?p tr¨¬nh v¨¤ Thi?t k? Web 1 ¨C B¨¤i 9 : PHP n?ng cao
Session - ?ng d?ng cho Gi? h¨¤ng (shopping cart)
X¨®a bi?n trong Session
{¡®Book1¡¯, ¡®Book2¡¯, ¡®Book3¡¯}
Session : Array : Mathang [ ] Ghi xu?ng CSDL
Session : Array : Soluong[ ]
{13, 2, 7}
? 2007 Khoa CNTT - ?HKHTN](https://image.slidesharecdn.com/09webcourse-phpnangcao-130411234251-phpapp02/85/09-web-course_-_php_nang_cao-24-320.jpg)
