I encode a url having GET parameters using base64 and then decode it back to get the same url back. The string I receive is.
task_type=all&keyword=asdfsd&location=Vasant Kunj&category=17&subcategory=19&price[]=&price[]=100&price[]=300&price[]=500&price[]=above&educations[]=&educations[]=22&educations[]=29&industry[]=&industry[]=1&industry[]=7&experience=6&freshness=1
Now how can I get the original $_GET array back so that I can use it. Or any other way of getting all the parameters so that I can use them. Or any other better way to encode and decode so that original url is not visible to the user.
All help appreciated. Thanx in advance.
As you are encoding the url having GET parameters using base64 you will not be able to get exact GET parameters. But after decoding it you are getting the query string back as you have mentioned, So in this case you can use parse_str(), see doc
Example:
$queryString = "task_type=all&keyword=asdfsd&location=Vasant Kunj&category=17&subcategory=19&price[]=&price[]=100&price[]=300&price[]=500&price[]=above&educations[]=&educations[]=22&educations[]=29&industry[]=&industry[]=1&industry[]=7&experience=6&freshness=1";
parse_str($queryString, $getParamsArray);
var_dump($getParamsArray);
I guess this is what you were looking for...
Related
My API URL Returned code in browser as shown below. but json_decode($api_url,true); returns null.
i checked json_last_error();, it returns 4(json error syntax).
it worked with json_decode(file_get_contents($api_url),true);
why it isn't work with json_decode. please help
{"dataset":{"id":27153572,"dataset_code":"20MICRONS_A_DEBT","database_code":"DEB","name":"20 Microns Limited,Total Debt","description":"\u003cp\u003e20 Microns Limited(NSE:20MICRONS)-Total Debt(Annual)\u003c/p\u003e","refreshed_at":"2018-09-21T08:04:08.278Z","newest_available_date":"2018-03-31","oldest_available_date":"2005-03-31","column_names":["PERIOD","STANDALONE","CONSOLIDATED"],"frequency":"annual","type":"Time Series","premium":true,"limit":null,"transform":null,"column_index":null,"start_date":"2005-03-31","end_date":"2018-03-31","data":[["2018-03-31",128.56,133.68],["2017-03-31",144.9,151.73],["2016-03-31",155.18,163.41],["2015-03-31",152.8,164.62],["2014-03-31",162.01,176.64],["2013-03-31",148.49,164.73],["2012-03-31",144.67,158.6],["2011-03-31",81.42,120.31],["2010-03-31",84.35,87.35],["2009-03-31",58.62,58.62],["2008-03-31",46.52,null],["2007-03-31",42.46,null],["2006-03-31",40.03,null],["2005-03-31",38.98,null]],"collapse":null,"order":null,"database_id":14992}}
What you are trying to do has no sense. $api_url is just an url so when you try to decode it then it doesn't have a json stucture and it will throw an exeption.
What you should decode is the data that this url returns to you.
So First you should get data from url then use json_decode($api_url,true);.
To get data you can use file_get_contents or curl.
Props to u_mulder who hit the nail on the head but I want to break this down for you a little.
Purpose of file_get_contents():
The file_get_contents() function is an inbuilt function in PHP which is used to read the contents of a file into a string.
Please note that the 'file' can be a file residing on your web server or a remote file (URL), which in essence will give you a web document back.
Purpose of json_decode():
The json_decode() function is an inbuilt function in PHP which is used to decode a JSON string. It converts a JSON encoded string into a PHP variable.
With that in mind you can see that performing json_decode on an invalid JSON string or a URL will render your result as NULL.
json_decode('https://www.website.com')
This is essentially what you are doing. performing the file_get_contents inside your json_decode first converts your URL/File ('https://www.website.com') into a string, that string then having JSON is then converted into an array by json_decode.
I have a small problem with my PHP script. I want to be able to have a URL within a query string so it would look like this:
http://example.com/?url=http://google.com/
This works absolutely fine and $_GET['url'] will return http://google.com.
The problem is when the URL in my query string already has query string, for example:
http://example.com/?url=http://www.amazon.com/MP3-Music-Download/b/ref=sa_menu_mp3_str?ie=UTF8&node=163856011
will return:
http://www.amazon.com/MP3-Music-Download/b/ref=sa_menu_mp3_str?ie=UTF8
and I want it to return:
http://www.amazon.com/MP3-Music-Download/b/ref=sa_menu_mp3_str?ie=UTF8&node=163856011
I am using PHP for server side.
Could anybody please help?
Update
I am using Codeigniter, so if this is the reason why it isn't working as it should then please let me know.
You need to encode the url passed as query argument:
If you send it from PHP, use urlencode or rawurlencode.
If you send it from JS, use encodeURIComponent.
Use urldecode() to pass query string
I'm very new to PHP but have a good understanding of C,
When I want to access some post data on an API i'm creating in PHP I use:
$_POST['date_set']
to fetch a value being passed for date - This all works perfectly, however I read I should be fetching it like this:
$date_set = trim(urldecode($_POST['date_set']));
This always returns a 00:00:00 value for the date after it's stored in my DB.
When I access directly using $_POST['date_set'] I get whatever value was posted, for example: 2013-08-28 10:31:03
Can someone tell me what I'm messing up?
You should try it like,
$date_set = $_POST['date_set'].explode(' ');//('2013-08-28 10:31:03').explode(' ')
echo $date_set[1];
or
echo date('H:i:s',strtotime($_POST['date_set'])));
//echo date('H:i:s',strtotime('2013-08-28 10:31:03'));
If you are very new in php the Read date()
You only run urldecode over data is URL encoded. PHP will have decoded it before populating $_POST, so you certainly shouldn't be using that. (You might have to if you are dealing with double-encoded data, but the right solution there should be to not double encode the data).
trim removes leading and trailing white-space. It is useful if you have a free form input in which rogue spaces might be typed. You will need to do further sanity checking afterwards.
urldecode — Decodes URL-encoded string
Description
string urldecode ( string $str )
Decodes any %## encoding in the given string. Plus symbols ('+') are decoded to a space character.
urldecode: is used only for GET requests. you should be fine using $_POST['date_set'] only.
http://php.net/manual/en/function.urldecode.php
You'd better do this way
if(isset($_POST['date_set'])){
$date_set = $_POST['date_set'];
}
then you can use $date_set how you want.
If you still get 00:00:00 for $date_set, the problem is coming from the code which provide you the $_POST value.
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 )
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