- Example of a
GET form:
<html> <head> <title> HTML Form 1</title> </head> <body> <HR> <HR> <B> Form: </B> <HR> <P> <FORM ACTION="http://holland.mathcs.emory.edu/~cs377001/Web/echo-get.php" METHOD="GET"> <p>Enter input: <input type="text" name="inp" size=40></p> <p><input type="submit" value="Press to send"></p> </FORM> </body> </html>
What the Form tag look like in a webpage:
Type some text in the input box
Press on the Press to send button
- Result:
- The browser will
display the following URL:
http://holland.mathcs.emory.edu/~cs377001/Web/echo-get.php?inp=your-input-text
- The browser will
display the following URL:
- Conclusion:
- The GET method
transmits a request:
- As a part of the URL
- The GET method
transmits a request:
- How a
PHP program
receives input
using the GET method:
- The web server passes
the inputs to the
PHP interpreter using:
- the
associative array
named
$_GET[ ]
- Initialize the element $_GET['input-field-name'] with the value entered corresponding input field in the form tag.
- the
associative array
named
$_GET[ ]
- The web server passes
the inputs to the
PHP interpreter using:
- A concrete example:
- Here again is the web page
with the FORM tag:
<html> <head> <title> HTML Form 1</title> </head> <body> <HR> <HR> <B> Form: </B> <HR> <P> <FORM ACTION="http://holland.mathcs.emory.edu/~cs377001/Web/echo-get.php" METHOD="GET"> <p>Enter input: <input type="text" name="inp"></p> <p><input type="submit" value="Press to send"></p> </FORM> </body> </html>
-
What happens when
you press the
Press to send button:
- Your browser will send the
URL:
http://holland.mathcs.emory.edu/~cs377001/Web/echo-get.php?inp="my-text"to the webserver
- The web server will run
the PHP program
(on the machine
holland.mathcs.emory.edu):
/home/cs377001/public_html/Web/echo-get.php
with the following initialation:
$_GET["inp"] = "my-text"
Graphically depicted:
- Your browser will send the
URL:
- Here again is the web page
with the FORM tag:
- Example PHP program
to handle the
request:
<html> <head> <title> PHP program using the GET method (name = 'inp')</title> </head> <body> <?php print "This is a PHP prog to run the request: "; print '_$GET[inp] = '; # Single quoted string: print verbatim !! print $_GET["inp"]; # This will print the received value !! ?> </body> </html>Try it: