[Resolved] Passing Values to a new PHP page?

grantc2

How do I pass a value to another php page and set a variable == to the passed value in the recieving page?

Thanks for you help.

stolzyboy

on page with form

you have form element named variable

on php page you will then be able to grab variable like

<?
$variablefromfirstpage = $_POST['variable'];?>

RedDragon

make sure to test that the data really has been submitted eg:

if(!$submit) {
echo 'You cant call this script directly';
} else {
//do somthing
}

grantc2

Do I have to use a form, or can I just pass a variable in a link? I am generating my navigational hierarchy by pulling values out of mysql. Here is my code to build the scheme:

<?php>

//Build your SQL query
$result = mysql_query("SELECT distinct type_name FROM type");
//Fill the list/selection box
while ($info = mysql_fetch_array($result, MYSQL_ASSOC)) {
        echo("<a href=\"\" class = hp>");
        echo("".$info["type_name"]."<br>");
        echo("</a>");
}

?>

This code generates something like:

Switches
Routers
UPS
MDA
Wireless Access Points

The categories above will be links to their respective topics. I will use the variable passed to run a query against mysql to pull up all the available items when a link is selected. Make sense?

Grant

leatherback

Hi,

Using a link:

<a href=\"page.php?var1=$var21&var2=$va2\">sometext</a>

In the receiving page:

$var1 = $GET['var1'];
$var2 = $GET['var2'];

and you can use $var1 and $var2 in your queries

grantc2

I think this is it

Thanks

grantc2

Can you give me more info on this:

page.php?var1=$var21&var2=$va2\

I know page.php is the requested page. Whats the rest saying?

leatherback

Basically:

? - End pf page, start of added variables
Then firs the variable name: var1
then value declaration: = defines the end of variable name and start of value
$var1: I placed it like this, since this is the way you will build your link. This hold the value of var1 you want to pass. You could also have used: ..?var1=mydog...
Then in the next page $var1 would hold the value 'mydog'.

Finally: & seperates individual variable declarations.

Ah, I see what mixed things up for you:

The url should have been:

page.php?var1=$var1&var2=&var2

juschillinnow

page.php?var1=$var21&var2=$va2

In the link he is setting variables.

he is saying that var1 = $var21 and var2 = $va2

This is so you can capture them on the receiving page.

On the receiving page, if you type:

echo $var1;

it will output whatever the value of $var21 is.

$var21 can be replaced with the rows of of your mysql database or whatever value you want.

From the database you can use $row[0] for the first column in the database.