php json_encode返回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购买SiC加工</a> </ div>","2010-06- 21/nordic-capital-buys-sic-processing </ div>","PEHub Media","Business","completed",null,"Admin,China,Frog Capital,德国,意大利,Iyad Omari,制造业,挪威,PEHub Media,光伏晶圆制造,可再生能源,半导体,美国]]}

注意完成后字符串中间的null

为什么这样,我需要执行什么转义/操作才能对其进行编码？

我试过了, addslashes

Answer 1

从手册:

请注意,如果您尝试对包含非utf值的数组进行编码,则会在生成的JSON字符串中获取空值.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);