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Multiple variables between pages?
- Thread starter JediDan
- Start date
BigBadDave
Programmer
Like this:
Regards
David Byng
davidbyng@hotmail.com
Code:
### Page 1 ###
<?php
$sessionId = 233;
echo "<a href=\"page2.php?sessionId=$sessionId\">next page</a>";
?>
### Page 2 ###
<?php
$sessionId = $_GET[sessionId];
echo "Your sessionId is: $sessionId";
?>David Byng
davidbyng@hotmail.com
Misunderstanding here, I believe.
JediDan,
You can send many variables in a GET (URL query string, simply by separating them with "&":
You might have to urlencode your variables before sending them, if they contain complex characters, spaces, etc... (
On page2.php, depending on whether you have register_globals enabled, you can either directly refer to $var1, var2, etc... or use the $_GET array: $_GET['var1'], $_GET['var2'], etc...
Note: GET requests usually allow you to send a maximum of 1K characters, or something like that, for most browsers, while a POST often allows for several MB of data. -------------------------------------------
Big Brother: "War is Peace" -- Big Business: "Suspicion is Trust"
(
JediDan,
You can send many variables in a GET (URL query string, simply by separating them with "&":
Code:
echo "<a href=\"page2.php?var1=$var1&var2=$var2&var3=$var3_etc...\">next page</a>";On page2.php, depending on whether you have register_globals enabled, you can either directly refer to $var1, var2, etc... or use the $_GET array: $_GET['var1'], $_GET['var2'], etc...
Note: GET requests usually allow you to send a maximum of 1K characters, or something like that, for most browsers, while a POST often allows for several MB of data. -------------------------------------------
Big Brother: "War is Peace" -- Big Business: "Suspicion is Trust"
(
Read the post. JediDan is wondering how you do it without sessions.
By the way, there is are a couple additional ways to send multiple variables:
1. "argv" which can be nice for sending numerically indexed arrays: "page.php?element1+element2+element3+element4" (notice there is no equals sign here). This will be stored in $_SERVER["argv"], and produces the following array:
2. Fake directory paths: "page.php/string1/string2/string3/string4". This produces a string stored in $_SERVER["PATH_INFO"]. It's just one string, but it can be easily separated into an array:
(Note: PATH_INFO doesn't work with PHP/IIS on Windows, or at least, I haven't been able to find a way. But it does work with Apache on Windows.)
Here's a fun exercise: run the standard "phpinfo" page ( <?php phpinfo(); ?> ), and experiment with putting different values on the query string, as demonstrated here. The output of the phpinfo page will show you how these variables are translated in PHP. You can also submit forms to the phpinfo page as a form handler and see how your form variables are received. -------------------------------------------
Big Brother: "War is Peace" -- Big Business: "Suspicion is Trust"
(
By the way, there is are a couple additional ways to send multiple variables:
1. "argv" which can be nice for sending numerically indexed arrays: "page.php?element1+element2+element3+element4" (notice there is no equals sign here). This will be stored in $_SERVER["argv"], and produces the following array:
Code:
Array
(
[0] => element1
[1] => element2
[2] => element3
[3] => element4
)2. Fake directory paths: "page.php/string1/string2/string3/string4". This produces a string stored in $_SERVER["PATH_INFO"]. It's just one string, but it can be easily separated into an array:
Code:
$my_array = explode('/', $_SERVER["PATH_INFO"]);
//produces array
Array
(
[0] => string1
[1] => string2
[2] => string3
[3] => string4
)(Note: PATH_INFO doesn't work with PHP/IIS on Windows, or at least, I haven't been able to find a way. But it does work with Apache on Windows.)
Here's a fun exercise: run the standard "phpinfo" page ( <?php phpinfo(); ?> ), and experiment with putting different values on the query string, as demonstrated here. The output of the phpinfo page will show you how these variables are translated in PHP. You can also submit forms to the phpinfo page as a form handler and see how your form variables are received. -------------------------------------------
Big Brother: "War is Peace" -- Big Business: "Suspicion is Trust"
(
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