PHP - Not recieving URL variables with submitting form with GET

Question

I have a form using the GET method and also I'm using the action method to also pass on some URL variables:

<form action="items.php?a=1&b=2" method="get">...</form>

In items.php I use $_REQUEST to parse the contents of a,b vars but unless I use POST as method in the form, the variables appear empty or non-existent.

I've read about the differences between POST, GET, REQUEST but I'm not sure how to tackle this issue. I need the form to use GET so that it caches the results and when a user selects a result and then clicks back in his browser, he returns to the result set.

Try putting these in hidden fields: <input type="hidden" name="a" value="1" /><input type="hidden" name="b" value="2" /> inside the form. — jensgram
– jensgram, Commented Nov 8, 2012 at 11:58
so youre sayin that if you use POST you cant get the value of "$_REQUEST["a"]"? Sounds kinda strange to me.. Maybe you can try adding hidden input fields to store a and b variables in the form. Then use "items.php" as action. You should be able to receive all Input fields in $_REQUEST. edit: @jensgram: same thought same time — user1047248
– user1047248, Commented Nov 8, 2012 at 11:59
@crothass: The form has to use GET, not POST. If I use GET to submit it, I cant retrive a&b with REQUEST. I need the parsing to be via REQUEST because the variables might be sent to this page in other parts of the application as well using other methods as well, ie in a url. — bikey77
– bikey77, Commented Nov 8, 2012 at 12:33
If I use POST then I then get a resultset in items.php, I click on one of them and then click back in my browser. Result: "Confirm Form Resubmission" error which doesnt occur when using GET. Whats the workaround? — bikey77
– bikey77, Commented Nov 8, 2012 at 12:36

Andreas Louv · Accepted Answer · 2012-11-08 12:23:12Z

6

First of all, form will delete variables a and b from the request. To add them to the GET-request, use something like this:

<form action="index.php" method="get" >
<input type="hidden" name="a" value="1" />
<input type="hidden" name="b" value="2" />
....
</form>

From php you can access these variables using $_GET, eg:

$_GET['a'] // 1

edited Nov 8, 2012 at 12:23

Andreas Louv

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answered Nov 8, 2012 at 12:03

IvanT

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Comments

Erwin Moller · Accepted Answer · 2012-11-08 11:59:16Z

2

Switch the Method to POST.

Now you will be able to retrieve BOTH.

-> Find the queryparameters via $_GET.

-> Find the POST parameters via $_POST

And do yourself a favor and never look back at that monstrosity $_REQUEST.

answered Nov 8, 2012 at 11:59

Erwin Moller

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2 Comments

bikey77 Over a year ago

Ok, lets say I stick with POST. I then get a resultset in items.php, I click on one of them and then click back in my browser. Result: "Confirm Form Resubmission" error. Whats the workaround?

Erwin Moller Over a year ago

There are several. But first: Make sure you understand WHY the browser asks you that question: It is for a VERY legitimate reason bugging you. Compare it to this situation: (1) You walk into a bank. (2) You write a check for $100,- to your landlord. (3) Bank employee says to you: Thank you! (4) You walk out. Now suppose you could hit the back-button a few times back to (3). In that situation you are happy if the employee asked you: Are you sure you want to write a check of $100,- again? But the "solution" is called POST/REDIRECT/GET. Read here: en.wikipedia.org/wiki/Post/Redirect/Get

MrByte · Accepted Answer · 2012-11-08 11:58:04Z

1

I think you should use $_GET instead of $_REQUEST.

For example:

$myVar = $_GET['a'];
$myVar2 = $_GET['b'];

answered Nov 8, 2012 at 11:58

MrByte

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Comments

nickhar · Accepted Answer · 2012-11-08 11:58:37Z

1

To see the output vars of your $_GET form:

print_r($_GET);

And just use the following to access the vars:

$a = $_GET['a'];
$b = $_GET['b'];

answered Nov 8, 2012 at 11:58

nickhar

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Comments

bipen · Accepted Answer · 2012-11-08 12:01:26Z

1

use this in your from.... the used contents of a,b vars as hidden field

 <form action="items.php" method="get">
  ...
 <input type="hidden" name="a" value="1" />
 <input type="hidden" name="b" value="2" />
</form>

and get the variable as $_GET['a'] , $_GET['b']

answered Nov 8, 2012 at 12:01

bipen

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