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3/26/2019
..\demo>c:\xampp\php\php word.php a b c d e f
Direct invocation. Input: command line arguments. Output: text -> standard output.
URL: http://dcm.uhcl.edu/yue/courses/csci5333/current/notes/php/SQL_PHP.html
DCM web server: map URL to a filename.
Map to:
/index.html
URL:
http://localhost/php/csci5333/spring2019/hello.html
map to:
C:\xampp\htdocs\php\csci5333\Spring2019\hello.html
Example:
[1] HTTP request: http://localhost/php/csci5333/spring2019/hello2.php
Apache: map URL to:
C:\xampp\htdocs\php\csci5333\Spring2019\hello2.php
[2] Apache invoke PHP interpreter: steps 2 to 4: CGI
C:\xampp\php\php.exe
Windows: Apache configured to associate .php o C:\xampp\php\php.exe
*nix: shebang as the first tells the location of the interpreter.
[3] Runs hello2.php
[4] Output of helle2.php -> Apache
<html><head> <title>Hello world.</title></head><body> <p>Hello World from CSCI 5333,</p></body></html>
[5] Apache uses [4] -> HTTP Response.
HTTP/1.1 200 OKDate: Tue, 26 Mar 2019 21:46:58 GMTServer: Apache/2.4.17 (Win32) OpenSSL/1.0.2d PHP/5.6.19X-Powered-By: PHP/5.6.19Content-Length: 118Keep-Alive: timeout=5, max=100Connection: Keep-AliveContent-Type: text/html; charset=UTF-8
<html><head> <title>Hello world.</title></head><body> <p>Hello World from CSCI 5333,</p> </body></html>
For:
<?php// We'll be outputting a txt content
header('Content-Type: text/txt');?>
<html><head>… Will create:
HTTP Response header changed:
Note the HTML code will not be interpreted by the browser and is displayed as is.
CGI:
GET Method:
URL: http://localhost/php/csci5333/spring2019/hello.php?name=yue
Query string: name=yue (name value pairs)
Request Header:
…Request URL: http://localhost/php/csci5333/spring2019/hello.php? name=yue …
Input data: part of URL, part of HTTP Request Header
Webword.php:
http://localhost/php/csci5333/spring2019/webword.php?chars=abcdef
Request header:
Request URL: http://localhost/php/csci5333/spring2019/webword.php?chars=abcdef
$chars = preg_split("//",$inputChars);
Split $inputChar (e.g. abcdef) into $chars: ‘a’, ‘b’, ‘c’, ‘d’, ‘e’, ‘f’.
Output:
<html> <body> There are 3 words containing all supplied characters:</ol><li>barefaced</li><li>boldface</li><li>feedback</li></ol></body> </html>
HTTP Response
HTTP/1.1 200 OKDate: Tue, 26 Mar 2019 22:53:36 GMTServer: Apache/2.4.17 (Win32) OpenSSL/1.0.2d PHP/5.6.19X-Powered-By: PHP/5.6.19Content-Length: 162Keep-Alive: timeout=5, max=100Connection: Keep-AliveContent-Type: text/html; charset=UTF-8
<html><body>There are 3 words containing all supplied characters:</ol> <li>barefaced</li> <li>boldface</li> <li>feedback</li></ol></body></html>
