Pass a percent (%) sign in a url and get exact value of it using php

Question

I am trying to pass percent (%) sign in url like

%B6011000995504101^SB

but when I echo, it returns

♦011000995504101^SB

I want exact same value as I pass it in URL.

I have tried to use urlencode() function, but it give me output like this...

%B6011000995504101%5ESB

please help me regarding this

use url_encode() and url_decode() may also require htmlentities() %B6 for example is the code for the blob you got. passing the % is actually a really bad idea you'd be better off passing a different character for percent or not passing it at all and assume that the % is always there and assign it i nyour script after. — Dave, Jun 27 '13 at 12:06
% is used for urlencode, better to pass a specific pattern like $$ or something else and decode it in the php code. — Sudip Pal, Jun 27 '13 at 12:07
possible duplicate of [urlencode but ignore certain chars](http://stackoverflow.com/questions/1676209/urlencode-but-ignore-certain-chars) — Simon M, Jun 27 '13 at 12:08

IanPudney · Accepted Answer · 2017-01-13T03:17:22.000

79

Answer:

To send a % sign in a url, instead send %25.

In your case, in order for php to see a percent sign, you must pass the character string %25B6011000995504101^SB to the server.

Why:

In URLs, the percent sign has special meaning. Is used to encode special characters. For example, & is the separator between parameters, so if you want your parameter to actually contain an &, you instead write %26. Because the percent sign is used to encode special characters, it is also a special character, and so if you want to actually send a percent sign, it must also be encoded. The encoding for a percent sign is %25.

edited Jan 13 '17 at 03:17

answered Jun 27 '13 at 12:09

IanPudney

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it adds another 25 like %2525 – Sharath kumar Mar 08 '18 at 13:20
Awesome!! I was beating myself up because of this problem... thx – Paulo Künzel Dec 12 '18 at 21:38
1

If you end up with %2525, that means you're accidentally encoding the string *twice*. Figure out where the encodings are happening, and remove/avoid one of them. – IanPudney Jun 10 '21 at 20:37
I had the %2525 issue, the fix for me was to just to use the `urldecode('abc%text')` function. – Chris Hayes Aug 22 '21 at 13:01

score 6 · Answer 2 · answered Jun 27 '13 at 12:10

Before including a raw string in a URL it's a good idea to pass it through urlencode like so:

<?php
$original='%B6011000995504101^SB';

$updated=urlencode($original);

echo "<a href=\"some_page.php?$updated\">Link here</a>";
?>

The receiving page will know what to do - give this example a try on your webserver:

<?php

if($_GET['argument']) {
    echo "<p>You passed in the argument &quot;$_GET[argument]&quot;</p>";
}else {
    echo "<p>No argument was passed.</p>";
}
$original='%B6011000995504101^SB';

$updated=urlencode($original);

echo "<a href=\"urlencode.php?argument=$updated\">Link here</a>";
?>

(name the file urlencode.php)

Pass a percent (%) sign in a url and get exact value of it using php

2 Answers2

Answer:

Why:

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