php json_encode returning null

Question

Array
(
    [sEcho] => 1
    [iTotalRecords] => 7521
    [iTotalDisplayRecords] => 1
    [aaData] => Array
        (
            [0] => Array
                (
                    [0] => Nordic Capital Buys SiC Processing
                    [1] => 2010-06-21/nordic-capital-buys-sic-processing
                    [2] => PEHub Media
                    [3] => Business
                    [4] => completed
                    [5] => Nordic Capital has acquired a 70% stake in SiC Processing AG, a German industrial recycling company, from Frog Capital. No sale price was disclosed.  SiC Processing’s founding family retains a 25% holding, while former lead investor Zouk Ventures retains a 5% stake.

                    [6] => Admin, China, Frog Capital, Germany, Italy, Iyad Omari, Manufacturing, Norway, PEHub Media, Photovoltaic Wafer Manufacturing, Renewable Energy, Semiconductor, United States
                )

        )

)

echo json_encode($myArr);

{"sEcho":"1","iTotalRecords":7521,"iTotalDisplayRecords":"1","aaData":[[" Nordic Capital Buys SiC Processing</a></div>"," 2010-06-21/nordic-capital-buys-sic-processing</div>","PEHub Media","Business","completed",null," Admin, China, Frog Capital, Germany, Italy, Iyad Omari, Manufacturing, Norway, PEHub Media, Photovoltaic Wafer Manufacturing, Renewable Energy, Semiconductor, United States]]}

Note the null in the middle of the string after completed

Why is this, what escape/manipulation do I need to perform in order to encode this?

I have tried, addslashes

Works for me. Check your PHP configuration, I think json_* stuff can be disabled. — Jani Hartikainen
– Jani Hartikainen, Commented Jul 5, 2010 at 15:38
Please provide the PHP code used to construct the example array (and please check your questions carefully when posting - examples provided should do what you intend them to!) — AllenJB
– AllenJB, Commented Jul 5, 2010 at 16:06

robjmills · Accepted Answer · 2010-07-05 16:04:11Z

24

From the manual:

Note that if you try to encode an array containing non-utf values, you'll get null values in the resulting JSON string. You can batch-encode all the elements of an array with the array_map function:

$encodedArray = array_map(utf8_encode, $myArr);
echo json_encode($encodedArray);

answered Jul 5, 2010 at 16:04

robjmills

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2 Comments

Dustin Graham Over a year ago

Thanks seengee, perfect. I actually used array_map(htmlentities... for my situation, but this saved the day.

TML Over a year ago

It should be noted that suggesting utf8_encode() is not usually a great idea, as it blindly assumes the input is ISO-8859-1. If you're facing the problem, it's important that you first figure out what your character set IS, and only THEN convert (php.net/iconv can help with the second part if you're NOT dealing with ISO-8859-1).

Luca Matteis · Accepted Answer · 2010-07-05 15:39:31Z

1

Actually it doesn't return null, http://codepad.org/A34KdUf5.

Maybe your PHP version doesn't support json_encode().

answered Jul 5, 2010 at 15:39

Luca Matteis

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2 Comments

Lizard Over a year ago

Please check my question again i have updated with full code, as json_encode is working with rest of array.

devios1 Over a year ago

In copying and pasting, you probably inadvertently put it in UTF-8 form, while the original string likely wasn't.

AllenJB · Accepted Answer · 2010-07-05 15:39:35Z

1

Works for me on 5.2.13. Ensure you're using at least PHP 5.2.0 and that PHP wasn't compiled with --disable-json. You may also want to check that error reporting (and/or logging) is enabled.

answered Jul 5, 2010 at 15:39

AllenJB

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1 Comment

Lizard Over a year ago

Please check my question again i have updated with full code, as json_encode is working with rest of array.

franklin joseph · Accepted Answer · 2015-06-29 12:50:11Z

0

The simpler way is $store_name = utf8_encode(name_of_varaible) but please make sure that your character set is ISO-8859-1.

answered Jun 29, 2015 at 12:50

franklin joseph

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