I want to pass a url as a parameter in my PHP script. The URL is coming from my Android app which passes a url and the PHP script custom formats XML to return to the app. So I would pass the url I wanted to format and the PHP script would do stuff and echo the results.
For instance I want to pass this url:
differentwebpage.com/search/?query=ford%20f150&
in my php script (mywebpage.com/script.php):
$url = $_GET['url'];
$str = file_get_contents($url);
echo $str;
So the full url would be:
mywebpage.com/script.php?url=differentwebpage.com/search/?query=ford%20f150&
But this doesn't work. I think I need to URL encode/decode but I haven't had any success. How can I pass a full URL as a parameter?
Try encoding it in Android when you pass it.
You can encode using the URLEncoder here: http://developer.android.com/reference/java/net/URLEncoder.html
You can then easily unencode it in PHP using urldecode.
$url = urldecode($_GET['url']);
$str = file_get_contents($url);
echo $str;
Simply use the php function urlencode(). It will encode the URL in your example like this:
differentwebpage.com%2Fsearch%2F%3Fquery%3Dford%2520f150%26
Which can be fully decoded. And only contains characters that are valid in a URL.
Related
There is a string XX&YY and I'm passing it to another page. ie, localhost/sample/XX&YY/1 for some processing. Now when I try getting the name value on the other side I'm able to get only XX and not full XX&YY. How to rectify it? Any ideas?
Note : here is my url localhost/sample.php?name=somevalue&pageno=somevalue has been url re-written to localhost/sample/name/pageno.
You have to escape the URL . You can use rawurlencode() or urlencode() to encode your URL.
sidenote: Difference of the 2 functions
If I'm understanding correctly, this is the URL to your script:
http://localhost/sample/name/pageno
Which is then rewritten by your web server to this:
http://localhost/sample.php?name=somevalue&pageno=somevalue
Then, this is how you should format the URL:
$url = sprintf('http://localhost/sample/%s/%s',
urlencode('XX&YY'),
urlencode('1')
);
I have been using URL decode on encoded URL variables from $_get.
The current problem I am facing is I have a URL encoded like this:
blah.php?url=http%3A%2F%2Fm.youtube.com%2F#/watch?feature=player_embedded&v=zd7c5tQCs1I&desktop_uri=%2Fwatch%3Fv%3Dzd7c5tQCs1I%26feature%3Dplayer_embedded
I'm not sure what kind of encoding this is, can someone help me? When I use just "urldecode" on this it just returns m.youtube.com
Edit: My problem is not that url decode isn't working, it works if I manually enter this encoded URL and use urldecode(), but when this encoded url is in the actual pages url and I use the _GET function then I try to decode it it stripes off everything after the "#" in the URL.
<?php print urldecode($_GET["url"]);?>
It returns
"http://m.youtube.com/"
instead of
"http://m.youtube.com/#/watch?feature=player_embedded&v=zd7c5tQCs1I&desktop_uri=/watch?v=zd7c5tQCs1I&feature=player_embedded"
I think the issue is that the pound sign is not encoded, if I refresh the page it strips away the pound sing and everything after it, so how do I get around this? Can I still retrieve the info from "GET" even though there is a pound sign? (#)
The problem is that the full link has multiple = signs, and browser cant determine, that the other = signs refer just to the url= parameter.
in your case, at first, you need to use function before link is given to url= parameter:
========================= 1) JAVASCRIPT ======================
<script type="text/javascript">
var mylink = encodeURIComponent('http://testest.com/link.php?name=sta&car=saab');
document.write("http://yoursite.com/url=" + mylink);
</script>
========================= 2)or PHP ===========================
<?php
$mylink = 'http://testest.com/link.php?name=sta&car=saab';
echo 'http://yoursite.com/url='.urlencode($mylink);
?>
so, your output (url parameter) will get like this
http://yoursite.com/url=http%3A%2F%2Ftest.com%2Flink.php%3Fname%3Dsta%
so, the url parameter will get the encoded url.
after that, your .php file needs to decode that "url" parameter-
<?php
$varr = $_GET['url'];
$varr = preg_replace("/%u([0-9a-f]{3,4})/i","&#x\\1;",urldecode($varr));
$varr = html_entity_decode($varr,null,'UTF-8');
echo $varr;
?>
that will give you the correct value
I read on php.net about urldecode function and they say that superglobal $_get is already decoded, ex: "The superglobals $_GET and $_REQUEST are already decoded. Using urldecode() on an element in $_GET or $_REQUEST could have unexpected and dangerous results."
It is encoded into ASCII format .
see http://www.w3schools.com/tags/ref_urlencode.asp
So here is the problem, the pound sign (#) (Hash) wasn't encoded... since I can't go back and re-encode it I have to use javascript (ex. alert(window.location.hash);) to send me the full URL after the hash then I append it to PHP's version of the URL, I THEN use a find and replace function in PHP to replace the "#" with "%23", then I use the urldecode method and it returns the full proper url decoded.
This encoding is called percent encoding or URL encoding. You can use urldecode for decoding it. (Example: http://phpfiddle.org/lite/code/0nj-198 )
So im trying to get an url from the address bar that looks like this:
http://mysite.com/url.php?name=http://test.com/format.jsp?id=738ths3&secure=false
I'm using the $_GET variable to read it right off the URL my code is as follows
$arc = rawurlencode($_GET['name']);
echo "URL: $arc";
This only returns
URL: http://imgur.com/format.jsp?id=738ths3
It 's missing the &secure=false
What i want it to look:
URL: http://test.com/format.jsp?id=738ths3&secure=false
I have tried urlencode, rawurlencode with no avail, i have looked in google a number of forums and stackoverflow none of the answer help, any ideas? Thanks!
urlencode shows this:
URL: http%3A%2F%2Ftest.com
so i cant have that either!
You'll need to urlencode() before constructing the URL, ie:
$url = "http://mysite.com/url.php?name=".urlencode('http://test.com/format.jsp?id=738ths3&secure=false');
This way, you will be able obtain the full URL as a name GET parameter from $_GET['name'].
Explanation:
Without urlencode() it when constructing the URL, PHP would treat is as 2 separate parameters, separated by &:
$_GET['name']
which is http://imgur.com/format.jsp?id=738ths3 for your case
$_GET['secure']
which is false for your case
Alternatively:
From your comment, it seems that you do not have control for the URL construction. You can get the full $_GET in a single string using http_build_query:
$name = http_build_query($_GET);
You would then obtain:
echo $name; // name=http://test.com/format.jsp?id=738ths3&secure=false
// which you would then may want to strip away the first 'name='
$name = substr($name, strlen('name='));
echo $name; // to obtain http://test.com/format.jsp?id=738ths3&secure=false
The original URL, http://mysite.com/url.php?name=http://test.com/format.jsp?id=738ths3&secure=false, contains two query-string parameters: name and secure. The & in the query-string belongs to the full URL, not the URL in the name parameter.
If you have control over this value, when declaring the link/URL, use PHP's urlencode() to encode the full name value, such as:
$url = "http://mysite.com/url.php?name=" . urlencode("=http://test.com/format.jsp?id=738ths3&secure=false");
This will properly encode the name parameter and your $arc = $_GET['name']; will work as desired.
If you do not have control over setting the value and are simply parsing something you're receiving, you can split the given string on the name= parameter and assume everything else after it is part of name:
$splitQuery = split('name=', $_SERVER['REQUEST_URI']);
$arc = $splitQuery[1];
To decode the encoded URL, after you've accessed it, use PHP's urldecode():
$arc = urldecode($_GET['name']); // assuming you're properly encoding the `name` parameter
If you cannot encode the URL, you can get the current URI with this code:
$url = $_SERVER["REQUEST_URI"];
that in your case, the $url is :
/url.php?name=http://test.com/format.jsp?id=738ths3&secure=false
Then you can split it with explode and validate it and take the GET params from it.
I call a php script http://site.com/process.php that takes a url as one of its parameters. for=
http://site.com/process.php?for=http://www.anotherwebsite.com
I then do this and try to parse_url() but parse_url() gives a parse error.
$uri = $_SERVER['REQUEST_URI']; // /process.php?for=http://www.anotherwebsite.com
parse_url($uri);
How can I encode the for parameter either on the sending side (in the url) or on the receiving side (php) so that parse_url() understands that it's just a parameter that happens to look like a url?
Before including your url as a get parameter, use urlencode
$full_url = 'http://site.com/process.php?for=' . urlencode('http://www.anotherwebsite.com');
This function is convenient when
encoding a string to be used in a
query part of a URL, as a convenient
way to pass variables to the next
page.
To reverse the result of urlencode, use urldecode. As mario pointed out in a comment below, $_GET parameters are already urldecoded.
Well, first you must urlencode() the for= parameter, then in process.php, you can simply do
$url = $_GET["for"];
$url = urldecode($url); // http://www.anotherwebsite.com
Here are the functions:
http://php.net/manual/en/function.urlencode.php
http://php.net/manual/en/function.urldecode.php
I think I have the need to take a uri which has been decoded in PHP, and re-encode it.
Here is the situation:
JavaScript passes encoded uri as query string parameter to php script.
PHP script embeds uri as a hidden input value in an html document, responds with the document to a user agent.
JavaScript reads embedded uri and sets location of current document based on value of hidden input.
On Step 2, I am finding that the Uri is fully decoded after reading it in via $_GET. So when I embed the uri in the hidden input, it becomes un-encoded. So I would like to run a PHP script which re-encodes the Uri properly ex:
http://my.example.com/dog walk?is=very great
==>
http://my.example.com/dog%20walk?is=very%20great
Is there a pre-built php function for this or should I just write my own?
PLEASE NOTE: urlencode and urldecode are not the answer to get the desired input/output I have in the example above.
Thanks,
Macy
Are you looking for : http://fr.php.net/manual/en/function.urlencode.php ?
I don't know if will help you, but PHP have 3 useful functions:
$url = parse_url('put the url here');
parse_str( $url['query'], $query ); // generating an array by reference (yes, kinda weird)
echo $query; //in this line, you can encode or decode.
or, if you want to mount a query, you can use http_build_query(); that accepts values from an array, like:
$url = 'http://my.example.com/dog walk?';
$array = Array (
'is' => 'very_great',
);
$url_created = $url . http_build_query($array);
urldecode:
http://www.php.net/manual/en/function.urldecode.php