php把mysql數(shù)據(jù)轉(zhuǎn)成json格式的方法：首先mysql測試數(shù)據(jù)庫表，并新建【testmysql.php】文件來測試；然后用數(shù)據(jù)庫執(zhí)行查詢語句；接著將數(shù)據(jù)放到user對象中；最后用【json_encode】函數(shù)將數(shù)據(jù)轉(zhuǎn)換成json格式。

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php把mysql數(shù)據(jù)轉(zhuǎn)成json格式的方法：

1、首先mysql測試數(shù)據(jù)庫表

CREATE TABLE `t_user` (   `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '用戶編號',   `login_name` varchar(50) NOT NULL COMMENT '用戶名',   `usable` int(11) NOT NULL DEFAULT '1' COMMENT '是否可用 0：不可用；1：可用',   `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '創(chuàng)建時間',   `last_login_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '最后登錄時間',   PRIMARY KEY (`id`),   UNIQUE KEY `login_name` (`login_name`) ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 COMMENT='用戶表';

2、在idea開發(fā)工具中新建一個testmysql.php文件來測試

創(chuàng)建mysql連接 $link = mysql_connect('xxx:3306', 'root', 'xxx'); if (!$link) {     echo "fail"; }

3、選擇數(shù)據(jù)庫，執(zhí)行查詢語句，$result接收返回的數(shù)據(jù)內(nèi)容

mysql_select_db("study"); $result = mysql_query("select * from t_user");

4、定義一個user對象

class User {    public $login_name;    public $usable;    public $create_time; }

5、循環(huán)讀出數(shù)據(jù)放到user對象中

$data = array(); while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {     $user = new User();     $user->login_name = $row["login_name"];     $user->usable = $row["usable"];     $user->create_time = $row["create_time"];     $data[] = $user; }

6、使用json_encode函數(shù)將數(shù)組數(shù)據(jù)轉(zhuǎn)換成json格式，然后echo打印出來

$json = json_encode($data);echo "{" . '"user"' . ":" . $json . "}";

7、右擊選擇Run運行，看看控制臺運行之后打印結(jié)果

{"user":[{"login_name":"aa1","usable":"2","create_time":"2017-08-29 18:21:35"},{"login_name":"aa","usable":"1","create_time":"2017-08-29 18:22:30"}]}

信息成功從mysql中讀出并轉(zhuǎn)換成json格式打印了出來

完整示例代碼如下：

<?php error_reporting(E_ALL || ~E_NOTICE); $link = mysql_connect('xxx:3306', 'root', 'xxx'); if (!$link) {     echo "fail"; } mysql_select_db("study"); $result = mysql_query("select * from t_user"); class User {     public $login_name;     public $usable;     public $create_time; } $data = array(); while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {     $user = new User();     $user->login_name = $row["login_name"];     $user->usable = $row["usable"];     $user->create_time = $row["create_time"];     $data[] = $user; } $json = json_encode($data); echo "{" . '"user"' . ":" . $json . "}";

想了解