php场景中，需要将数组转为json字符串，就需要用到php自带的json_encode函数；
但是当数组中含有中文字符串时，转出来的结果却是以下结果:
1 <?php 2 ?3 ????$tmpArr = array( 4 ????????‘name‘ => ‘长裤‘, 5 ????????‘color‘ => ‘blue‘, 6 ????????‘size‘ => ‘XL‘, 7 ????????‘title‘ => ‘中年男装 长裤‘ 8 ????); 9 10 ????$tmpJson = json_encode($tmpArr);11 12 ????echo $tmpJson;
输出：{"name":"\u957f\u88e4","color":"blue","size":"XL","title":"\u4e2d\u5e74\u7537\u88c5 \u957f\u88e4"}需要中文不被转换，只需要给json_encode函数中传入一个参数JSON_UNESCAPED_UNICODE即可，如下：
1 <?php 2 ?3 ????$tmpArr = array( 4 ????????‘name‘ => ‘长裤‘, 5 ????????‘color‘ => ‘blue‘, 6 ????????‘size‘ => ‘XL‘, 7 ????????‘title‘ => ‘中年男装 长裤‘ 8 ????); 9 10 ????$tmpJson = json_encode($tmpArr,JSON_UNESCAPED_UNICODE);11 12 ????echo $tmpJson;
输出：{"name":"长裤","color":"blue","size":"XL","title":"中年男装 长裤"}但是PHP版本<5.4.0中并不支持以上参数JSON_UNESCAPED_UNICODE，可通过以下方式解决
1 $tmpArr = array( 2 ????????‘name‘ => ‘长裤‘, 3 ????????‘color‘ => ‘blue‘, 4 ????????‘size‘ => ‘XL‘, 5 ????????‘title‘ => ‘中年男装 长裤‘ 6 ????); 7 ?8 ????$tmpJson = json_encode($tmpArr); 9 ????$tmpJson = preg_replace_callback("#\\\u([0-9a-f]{4})#i",function($matchs){10 ????????return iconv(‘UCS-2BE‘, ‘UTF-8‘, pack(‘H4‘, $matchs[1]));11 ????},$tmpJson);12 13 ????echo $tmpJson;
输出：{"name":"长裤","color":"blue","size":"XL","title":"中年男装 长裤"}最后就可以封装一个函数(主要是测试环境跟生产环境不同所以封装一个函数，可以根据自己的PHP环境只用一种方式即可)：
1 <?php 2 ????$tmpArr = array( 3 ????????‘name‘ => ‘长裤‘, 4 ????????‘color‘ => ‘blue‘, 5 ????????‘size‘ => ‘XL‘, 6 ????????‘title‘ => ‘中年男装 长裤‘ 7 ????); 8 ?9 ????function json_encode_array($array){10 ????????if(version_compare(PHP_VERSION,‘5.4.0‘,‘<‘)){11 ????????????$str = json_encode($array);12 ????????????$str = preg_replace_callback("#\\\u([0-9a-f]{4})#i",function($matchs){13 ????????????????return iconv(‘UCS-2BE‘, ‘UTF-8‘, pack(‘H4‘, $matchs[1]));14 ????????????},$str);15 ????????????return $str;16 ????????}else{17 ????????????return json_encode($array, JSON_UNESCAPED_UNICODE);18 ????????}19 ????}20 21 ????echo json_encode_array($tmpArr);
输出：{"name":"长裤","color":"blue","size":"XL","title":"中年男装 长裤"}php中自带函数 json_encode
原文地址：https://www.cnblogs.com/yuwenbo/p/9595302.html