[SOLVED] repost $_GET variables

[bruce080]

I have a search tool that allows filtering by a couple of different categories.  You select a value from a dropdown menu and it will filter the results to only show that specific product or system that was chosen.

 

I also have pagination set up so that it will only display 20 documents per page but it will not repost the variables that were used for the filter.  Is there a simple way to resubmit the current filter variables with another variable for page number?

 

Thanks in advance for your help,

Steven

[WolfRage]

Going to need to see some code in order to tell you the best solution for your issue.

[ignace]

Make sure your query part never gets removed from the url:

 

Change from:

<a href="page.php">

 

To:

<a href="page.php<?php print $_SERVER['QUERY_STRING'] ? '?' . $_SERVER['QUERY_STRING'] : '';?>">

[jcrew]

---

Just make sure the variables are on each page.

 

?category=apples&color=red&page=3

 

Blue being what they selected (SELECT * FROM harvest WHERE category='$_GET[category]' AND color='$_GET' LIMIT $x,$y). $x and $y being the limits determined by $_GET

---

.

[bruce080]

Oh great, I think that $_SERVER['QUERY_STRING'] is what I was looking for.  That will make it a lot easier than my nested if statements... haha, I'm worthless.

 

Anyway, I tried this code:

echo "<dd class=\"next\"><a href=\"cc-nse-search.php<?php print $_SERVER['QUERY_STRING'] ? '?' . $_SERVER['QUERY_STRING'] : '';?>\"></dd>";

 

and it gave me this error:

Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING

 

Anyone care to enlighten me on what exactly that piece of code is supposed to be doing?  In the meantime I'm going to try and incorporate QUERY_STRING into my code.

 

Thanks for the help guys

[haku]

You are already in php (it's an echo statement', and you are trying to open new php tags. That doesn't work.

[bruce080]

Great, I solved the problem.  Here is the code that I am using to create a link to the next page in my search.

 

										
echo "<dd class=\"next\"><a href=\"cc-nse-search.php";
print ($_SERVER['QUERY_STRING'] ? '?' . $_SERVER['QUERY_STRING'] . "&pageno=$next" : '');
echo "\">next</a></dd>";

 

Thanks,

Steven

[bruce080]

Wait, no, that didn't quite solve it either.  How do I handle the $pageno variable.

 

If I have:

?category=apples&color=red&pageno=3

 

and I want to make a link to the next page, how do I remove the pageno=3 variable and replace it with pageno=4?

[haku]

$next = $next + 1;

[bruce080]

Sorry, I might have phrased that poorly.  I know how to increment the page numbers, but I don't know how to change a variable when creating the link

 

If my current QUERY_STRING is:

?category=apples&color=red&pageno=3

 

my code will just add a variable and create this new QUERY_STRING:

?category=apples&color=red&pageno=3&pageno=4

 

Is it possible to replace or change the original $pageno variable from the string so that I don't keep adding to it?

[jcrew]

Sorry, I might have phrased that poorly.  I know how to increment the page numbers, but I don't know how to change a variable when creating the link

 

If my current QUERY_STRING is:

?category=apples&color=red&pageno=3

 

my code will just add a variable and create this new QUERY_STRING:

?category=apples&color=red&pageno=3&pageno=4

 

Is it possible to replace or change the original $pageno variable from the string so that I don't keep adding to it?

 

Yeah, just set $_GET[pageno] = $_GET[pageno] + 1;

[bruce080]

You're right, setting $_GET[pageno]=4 will change the pageno variable.  However, this does not solve the problem because $_SERVER['QUERY_STRING'] will still be:

?category=apples&color=red&pageno=3 even if ($_GET[pageno] == 4) now.

 

Instead, I fixed it using substr().  While, admittedly is not the best solution, it will work for now.  Here is my code:

$qString = $_SERVER['QUERY_STRING'];
$newqString = substr($qString, 0, strrpos($qString, '=') +1);
echo "<dd class=\"next\"><a href=\"cc-nse-search.php";
print ($qString ? '?' . $newqString . "$next" : "?pageno=$next");
echo "\"> </a></dd>";

 

This code will remove anything past the last '=' sign and will replace it with the new number.  This currently works because pageno is always the last variable in the URL, however, its probably not a permanent solution.

 

If someone comes up with a better idea, can you post please?

 

Thanks again guys,

Steven

[ignace]

If someone comes up with a better idea, can you post please?

 

function createQueryString($array = array(), $kvSep = '=', $varSep = '&') {
    $get = array_merge($_GET, $array);
    $getVars = array();
    foreach ($get as $key => $value) {
        if (is_string($key)) {
             $getVars[] = implode($kvSep, array($key, $value));
        }
    }
    return implode($varSep, $getVars);
}

 

<a href="page.php?<?php print createQueryString(); ?>">

<?php $_GET['pageno']++; ?>

<a href="page.php?<?php print createQueryString(); ?>">

<a href="page.php?<?php print createQueryString(array('pageno' => 5)); ?>">

 

Outputs:

<a href="page.php?category=apples&color=red&pageno=3">

<a href="page.php?category=apples&color=red&pageno=4">

<a href="page.php?category=apples&color=red&pageno=5">

[bruce080]

Wow.  I like that a lot.  Thanks Ignace.