How to query mysql in php and return json

php查询mysql并返回json的方法：首先创建一个PHP示例文件；然后通过mysqli_connect连接数据库；最后通过“decodeUnicode($json);”打印编码后的json字符串即可。

本文操作环境：Windows7系统、PHP7.1版，DELL G3电脑

php怎么查询mysql并返回json？

php读取MySQL数据并返回json数据

id = $row["id"]; $user->name = $row["name"]; $user->age = $row["age"]; $user->sex = $row["sex"]; $data[]=$user; } //打印编码后的json字符串 $json = json_encode($data); echo decodeUnicode($json); }else{ echo "查询失败"; } mysqli_close($con); ?>

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