reading a url in PHP that has been encoded in javascript

Question

In Javascript i encode parts of the request parameter like this

window.location.href = "search.php?qry=" + encodeURIComponent("m & l");

In my Search.php i reach this like this

$url = urldecode($_SERVER['REQUEST_URI']);
echo ."Full URL: " .$url ."<br>";
$parts = parse_url($url);
parse_str($parts['query'], $query);
$qry = "Just Query: " .trim($query['qry']);
echo $qry ."<br>";

This prints out:

Full Url: /Search.php?qry=m & l
Just Query: m

Looks like the stuff after the & is being dropped in the 'm & l`

What changes do i need to make in PHP or Javascript?

the Just Query: echo statement should have printed Just Query: m & l — codeNinja
– codeNinja, Commented Feb 9, 2019 at 4:14
You just asked this question, shouldn't this have been an edit? — Jack Bashford
– Jack Bashford, Commented Feb 9, 2019 at 4:15
possibly, but i thought that one was about encoding and this one is about decoding. What help can i get with this please? — codeNinja
– codeNinja, Commented Feb 9, 2019 at 4:26
@Jack Bashford - I actually chose to answer because it seemed like a separate, but related question to me. I could also see why decoding the result separately and then passing that to parse_url might not behave the way the asker was expecting. — EPB
– EPB, Commented Feb 9, 2019 at 4:33

EPB · Accepted Answer · 2019-02-09 04:45:24Z

3

Just change:

$url = urldecode($_SERVER['REQUEST_URI']);

to

$url = $_SERVER['REQUEST_URI'];

You're basically double-decoding as parse_url will decode it as well.

Worth noting that PHP has already done this for you so there's not really a reason to parse your own URL. $_GET['qry'] will contain 'm & l'

If you're doing this for several query variables, you'll need to run encodeURIComponent separately for each.

Example:

window.location.href = "search.php?qry=" + encodeURIComponent("m & l") + "&subcat="+encodeURIComponent("hello & there");

You're explicitly telling it to encode the & after all.

edited Feb 9, 2019 at 4:45

answered Feb 9, 2019 at 4:26

EPB

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2 Comments

codeNinja Over a year ago

i tried the using the PHP way like you recommended. Works if i only have one paramenter in the url. But when i have two this is what happens. $qry = trim($_GET['qry']); echo $qry ; this prints out. M & L&subcat= so the second query param is being clubbed in

EPB Over a year ago

I added an edit for situations where you want to send several query variables. Since you'd be encoding the separator, you'll need to encode them separately.

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