Server Technology PPNT Manual do Utilizador descarregar pdf (Página 36)

PHP: Handling Forms(8/8)

Example of security problem with global form variables (continued)

Suppose a following HTML form:

php.ini: register_globals=Off!!!

>=PHP4.2.0 by default oﬀ

Use $HTTP_POST _VAR S or $_POST instead

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Server-side Technologies 1
CGI, PHP, Java Servlets, JSP 1
CGI Speciﬁcation(4/4) 11
CGI Examples(1/7) 12
Example 1: 12
Write HTML to st dout 12
CGI Examples(2/7) 13
Example 1 (continued): 13
Example: 13
CGI Examples(3/7) 14
Example 2: 14
CGI Examples(6/7) 17
Example 4: 17
CGI Examples(7/7) 18
Example 4 (continued): 18
Another CGI example: 18
CGI Applications(1/2) 19
WWW gateways! 19
CGI Applications(2/2) 20
Finger gateway: 20
Mail gateway: 20
1 while s/[(][^()]*[)] //;) 22
... </script> 24
<% ... %> 24
PHP: Hello World(2/3) 25
PHP: Hello World(3/3) 26
PHP: Handling Forms(1/8) 29
PHP: Handling Forms(2/8) 30
PHP: Handling Forms(3/8) 31
Example with GET: 31
Example with POST: 31
Example PHP: 31
Source PHP: 31
PHP: Handling Forms(4/8) 32
PHP: Handling Forms(5/8) 33
PHP: Handling Forms(7/8) 35
>=PHP4.2.0 by default oﬀ 36
Retrieving data with PHP: 40
PHP: XML Manipulation(2/3) 43
PHP: XML Manipulation(3/3) 44
PHP: Image Manipulation(1/3) 45
PHP: Image Manipulation(2/3) 46
PHP: Image Manipulation(3/3) 47
Convinient 52
Huge Java software libraries 52
Servlet Container 55
Apache software foundation 55
Java Servlets - Internal(2/2) 59
Example: Hello World! 60
Hello World: 63
Source code: 63
ECSHelloWorldServlet.java 64
CGI Variables: 66
HTTP Headers: 66
Form for inserting data: 70
Retrieving data with Java 72
XMLRegistrationServlet.java 75
Java Server Pages (JSP) 77
HelloWorld JSP: 77
JSP Elements(1/7) 79
JSP expression 79
</jsp:expression> 79
JSP Elements(3/7) 81
JSP Declaration 81
</jsp:declaration> 81
JSP Elements(4/7) 82
JSP Page Directive 82
JSP Elements(5/7) 83
JSP comments 83
JSP Elements(7/7) 85
Possible solution 87
Session Tracking(1/5) 90
Session Tracking(3/5) 92
Session Tracking(4/5) 93
SessionServlet.java 94
Very hot topic right now 95
.NET from Microsoft 95
Web services 95

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Server Technology PPNT Manual do Utilizador Página 36

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