php 查询数据库返回json数据

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// 设置返回json格式数据 header('content-type:application/json;charset=utf8');

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//连接数据库 $link = mysql_connect("localhost", "root", "root") or die("Unable to connect to the MySQL!");

mysql_query("SET NAMES 'UTF8'");

mysql_select_db("jilinwula", $link) or die("Unable to connect to the MySQL!");

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// 获取分页参数 $page = 0 ; $pageSize = 3;

if(!is_null($_GET["page"])) { $page = $_GET["page"]; }

if(!is_null($_GET["pageSize"])) { $pageSize = $_GET["pageSize"]; }

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// 查询数据到数组中 $result = mysql_query("select username,password from userinfo limit " . $page . ", ". $pageSize ."");

$results = array(); while ($row = mysql_fetch_assoc($result)) { $results[] = $row; }

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// 将数组转成json格式 echo json_encode($results);

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// 关闭连接 mysql_free_result($result);

mysql_close($link);