I have a some data in JSON format(which comes from php) to be passed to a javascript function. I'm getting 'invalid property id' error when I try to do this.
Error: invalid property id
Source File: http://localhost/MathVoyager/index.php/test
Line: 1, Column: 15
Source Code:
draw_quadratic({
Below is the js function signature(both data and options are in JSON format)
function draw_quadratic(data, options, alpha, beta)
Below is a sample function call.
draw_quadratic({"label":"(((1)*x^((1))+(4))*((1)*x^((1))+(6))) = (0)","data":[[-8,8],[-7.5,5.25],[-7,3],[-6.5,1.25],[-6,0],[-5.5,-0.75],[-5,-1],[-4.5,-0.75],[-4,0],[-3.5,1.25],[-3,3],[-2.5,5.25],[-2,8]],"xaxis":1,"yaxis":1}, {"series":{"points":{"show":true},"lines":{"show":true}},"grid":{"hoverable":true,"clickable":true}}, 4, 8);
(I'm trying to plot some graph using flot js library)
Thanks in advance
mydata= JSON.parse('{"label":"(((1)*x^((1))+(4))*((1)*x^((1))+(6))) = (0)","data":[[-8,8],[-7.5,5.25],[-7,3],[-6.5,1.25],[-6,0],[-5.5,-0.75],[-5,-1],[-4.5,-0.75],[-4,0],[-3.5,1.25],[-3,3],[-2.5,5.25],[-2,8]],"xaxis":1,"yaxis":1}');
myoptions= JSON.parse('{"series":{"points":{"show":true},"lines":{"show":true}},"grid":{"hoverable":true,"clickable":true}}');
draw_quadratic( mydata,myoptions,4,8);
Don't forget '' or "" when sending parameters to jsonparse it takes a string
www.JSON.org/json2.js
www.JSON.org/js.html
In php you can use:
.json_decode — Decodes a JSON string
.json_encode — Returns the JSON representation of a value
The code I wrote works with me in Chrome.
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 am trying to make an external API call to fetch JSON data and return it within my web app.
Here is what the data looks like from the API call:
JSON returned from URL:
{
"results":[
{
"name":"Company1",
"ProviderName": "ProviderName1",
"ProviderLogo": "/images/some_image1.jpg",
"GetURL": "/some_url_path",
"Costs": 10000.50
},{
"name":"Company2",
"ProviderName": "ProviderName2",
"ProviderLogo": "/images/some_image2.jpg",
"applyURL": "/some_url_path",
"Costs": 12000.50
}]
}
Since I am using PHP, I am using the following code:
$api_data = file_get_contents('MY URL');
// Had to use 'encoded_json()' since 'json_decode()' was initially returning NULL
$encoded_json = json_encode($api_data);
$decoded_json = json_decode($encoded_json);
// Now I want to get the specific values from the JSON result but nothing is being returned
// I tried using something like this but I'm not getting anything
foreach($decoded_json->results as $mydata)
{
echo 'Decoded Name: ' . $mydata->name . "\n";
}
Any help is greatly appreciated!
EDIT:
So this what was actually happening and I'm going to apologize to everyone in advance right now because I didn't include what was actually throwing the error off in the first place!
I used JSON Lint and put all of the API Json data that I was receiving and it showed me where the error was occurring.
Error:
"SomeCostUpper": $some_variable.rawUpperCost
I tested out my PHP code using valid JSON and was able to return the results without a problem.
Everyone, I'm really sorry for the confusion but thanks for your efforts!
$api_data = file_get_contents('MY URL');
You now have a string containing the data in that URL.
// Had to use 'encoded_json()' since 'json_decode()' was initially returning NULL
If json_decode returns NULL, then the string you had does not contain valid JSON.
$encoded_json = json_encode($api_data);
You now have a string representation of a string containing the data from the URL.
$decoded_json = json_decode($encoded_json);
And now you have reversed that, so you have your original string back.
foreach($decoded_json->results as $mydata)
It is a string. You can't do that.
You need to fix the data you are getting from MY URL.
Use a tool like JSON Lint, which will give you an error like:
Error: Parse error on line 7:
..."Costs": 10000.50, }, { "name": "Comp
----------------------^
Expecting 'STRING', got '}'
You have a rogue comma after the last entry in your object.
This is likely caused by generating JSON by mashing together strings or by writing it by hand. Avoid that. Use tools and libraries designed to generate JSON.
I don't know from which website you get that JSON data, but it isn't valid JSON, that is why json_decode() initially returned NULL. There are 2 commas (each costs value has one) that shouldn't be there.
You "fixed" that by using first json_encode() and then json_decode() on the JSON data returned from the API call. You might think that that fixed your problem but no, if you take a look at what is inside $decoded_json you will see that there isn't an object or an array which you can use.
That means that when you try to do
foreach($decoded_json->results as $mydata)
{
echo 'Decoded Name: ' . $mydata->name . "\n";
}
It fails because it cannot iterate over the 'string' inside $decoded_json.
If you had turned on error reporting you would have seen the following errors:
E_NOTICE : type 8 -- Trying to get property of non-object -- at line n
E_WARNING : type 2 -- Invalid argument supplied for foreach() -- at line n
the json is ok, you don't need to encode and then decode again...
just do:
$api_data = file_get_contents('MY URL');
$decoded_json = json_decode($api_data );
foreach($decoded_json->results as $mydata)
{
echo 'Decoded Name: ' . $mydata->name . "\n";
}
Your JSON data is not valid. Here is the valid JSON structure.
Remove the ',' from the last elemp "Costs": "10000.50" and use double quote for the value as "10000.50".
I send a QueryString formatted text like bellow to a php Script via Ajax:
title=hello&custLength=200&custWidth=300
And I want to convert this text to a JSON Object by this result in PHP:
{
"title" : "hello",
"custLength" : 200,
"custWidth" : 300
}
How can i do that. Does anyone have a solution?
Edit :
In fact i have three element in a form by title , custLength and custWidth names and i tried to send these elements via serialize() jquery method as one parameter to PHP script.
this code is for Send data to php:
customizingOptions = $('#title,#custLength,#custWidth').serialize();
$.post('cardOperations',{action:'add','p_id':p_id,'quantity':quantity,'customizingOptions':customizingOptions},function(data){
if (data.success){
goBackBtn('show');
updateTopCard('new');
}
},'json');
in PHP script i used json_encode() for convert only customizingOptions parameter to a json.
But the result was not what I expected and result was a simple Text like this:
"title=hello&custLength=200&custWidth=300"
I realize this is old, but I've found the most concise and effective solution to be the following (assuming you can't just encode the $_GET global):
parse_str('title=hello&custLength=200&custWidth=300', $parsed);
echo json_encode($parsed);
Should work for any PHP version >= 5.2.0 (when json_encode() was introduced).
$check = "title=hello&custLength=200&custWidth=300";
$keywords = preg_split("/[\s,=,&]+/", $check);
$arr=array();
for($i=0;$i<sizeof($keywords);$i++)
{
$arr[$keywords[$i]] = $keywords[++$i];
}
$obj =(object)$arr;
echo json_encode($obj);
Try This code You Get Your Desired Result
The easiest way how to achiev JSON object from $_GET string is really simple:
json_encode($_GET)
this will produce the following json output:
{"title":"hello","custLength":"200","custWidth":"300"}
Or you can use some parse function as first (for example - save all variables into array) and then you can send the parsed output into json_encode() function.
Without specifying detailed requirements, there are many solutions.
I was created JSON array from json_encode using PHP. I gave my array to json_encode . It's created JSON array very well. And i feed this JSON array to my android apps. When i am gonna read this url at android it's return following EXCEPTION ERROR.
Error parsing data org.json.JSONException: Value  of type java.lang.String cannot be converted to JSONObject
But when i am gonna create jason object at android adding this following line
jObj=new JSONObject(json.substring(json.indexOf("{"), json.lastIndexOf("}") + 1));
It's working perfectly.
But i don't want to need the my second type solution. I need the php solution when i am put my json_encode on php.
And also at IOS the JSON return NULL values. How can i fix in both IOS and Android
Thanks advance
The java.text.Normalizer is intended to do exactly this: remove unwanted unicode characters.
The normalize method will allow you to pass your CharSequence and return the "normalized", ASCII-only String.
In PHP, I'm trying to read an Excel file using COM():
$rrc_app = new COM("Excel.application");
$rrc_workbook = $rrc_app->Workbooks->Open($filename);
$rrc_worksheet = $rrc_workbook->Worksheets('Top sheet');
$rrc_worksheet->activate;
I tried to extract the value of a cell containing a "Time" value:
$review_time = $rrc_worksheet->Range("C30")->value;
However, it returns a decimal number:
0.604166666667
I know I can use the Format() function of VB, but I don't know from what object in PHP to call it from. The following:
$review_time = Format($rrc_worksheet->Range("C30")->value, "hh:mm:ss");
Gives:
Fatal error: Call to undefined function Format() in C:\xampplite\htdocs\pmc\index.php on line 40
Do you happen to know how I can call this Format() function using PHP?
Thanks in advance
Format is a function of the VBA.String module, so it's not part of the Excel COM library and I'm not sure if it is accessible via COM at all.
However, you can use the Text property instead of Value: This returns a formatted string (according to the cell format in Excel) rather than the underlying value:
$review_time = $rrc_worksheet->Range("C30")->Text;
EDIT: If the cell does not have the correct format yet, you can change the format before reading the Text property (untested):
$rrc_worksheet->Range("C30")->Select();
$rrc_app->Selection->NumberFormat = "hh:mm:ss";
$review_time = $rrc_worksheet->Range("C30")->Text;
Format() looks like a Visual Basic function. It is not necessarily available to you throught the Excel COM object you are communicating with - only if that object declares it somewhere. The VB function range is not imported automatically into PHP when talking to a COM object.
Can you try $rrc_app->Format()?
If nothing works, I recommend figuring out what the time value stands for (I'm sure you can find out here on SO) and converting it in PHP.