Json decode removes null and 0

Question

0.00/5 (No votes)

See more:

I use json_decode($content, true) to decode json string to php array. I found null value has been converted to white space. Then I manage it through

if ($cell=='')
{
$values .= 'Null,';
}

But I found that son_decode removes zero also. How do I get zero as zero and null as null from json_decode. Any help?

What I have tried:

json_decode($content, true)

if ($cell=='')
{
$values .= 'Null,';
}

Posted 17-Oct-16 1:45am

Member 10521029

Updated 5-Nov-16 20:00pm

NewPast

v2

Add a Solution

Comments

Suvendu Shekhar Giri 17-Oct-16 11:00am

Can you show the input?
Make sure that it is UTF-8 encoded data.

Member 10521029 28-Oct-16 11:44am

I used the following method to encode in c#. I fill datatable from ms sql server. How can I confirm UTF-8? Please help.

private static string DataTableToJson(DataTable dataTable)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
var rows = (from DataRow d in dataTable.Rows
select dataTable.Columns.Cast<datacolumn>().ToDictionary(col => col.ColumnName, col => d[col])).ToList();

return serializer.Serialize(rows);
}

Member 10521029 18-Oct-16 13:41pm

I have checked the value is zero after serialized to json string. It is removed or replaced to white space after decode it to php array. Thank you

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Member 10521029 · Answer 1 · 2016-11-05T20:00:00

C#

I worked it out. There is no encoding issue. It was in PHP array. PHP array returns empty for Null value. var_dump() returns Null value as Null but print_r() returns empty. I used the following code to get Null value as Null. 

if ($cell==Null)
{
 $values .= 'Null,';
} 

But PHP interpret 0 and false as Null also. So the above code returns 0 and false as null also. Here I changed it as below and got it worked.

if ($cell===Null)
{
 $values .= 'Null,';
}