php json_encode返回null

如何解决php json_encode返回null

从手册中：

请注意，如果您尝试对包含非UTF值的数组进行编码，则在结果JSON字符串中将获得空值。您可以使用array_map函数批量编码数组的所有元素：

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

解决方法

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

“,” 2010-06-21/nordic-capital-buys-sic-processing

“,”PEHub Media”,”Business”,”completed”,null,” Admin,United States]]}

注意完成后字符串中间的null

为什么要这样做，我需要执行什么转义/操纵才能对此进行编码？

我努力了， addslashes