PHP simply implements querying the database and returning json data_PHP tutorial

PHP simply implements querying the database and returning json data

Sample code one:

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// 设置返回json格式数据 header('content-type:application/json;charset=utf8');   //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!");   // 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"]; }   // 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[] = $row; }   // 将数组转成json格式 echo json_encode($results);   // 关闭连接 mysql_free_result($result);   mysql_close($link);

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//Set to return json format data header('content-type:application/json;charset=utf8'); //Connect to database $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!"); //Get paging parameters $page = 0 ; $pageSize = 3; if(!is_null($_GET["page"])) { $page = $_GET["page"]; } if(!is_null($_GET["pageSize"])) { $pageSize = $_GET["pageSize"]; } //Query data into array $result = mysql_query("select username,password from userinfo limit " . $page . ", ". $pageSize .""); $results = array(); while ($row = mysql_fetch_assoc($result)) { $results[] = $row; } //Convert the array into json format echo json_encode($results); //Close connection mysql_free_result($result); mysql_close($link);

Sample code two:

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//需要执行的SQL语句 //单条 $sql="select id,name from tbl_user where id=1"; //多条数据 //$sql="select id,name from tbl_user"; //调用conn.php文件进行数据库操作 require('Conn.php'); //提示操作成功信息，注意：$result存在于conn.php文件中，被调用出来 if($result) { // $array=mysql_fetch_array($result,MYSQL_ASSOC); /*数据集 $users=array(); $i=0; while($row=mysql_fetch_array($result,MYSQL_ASSOC)){ echo $row['id'].'-----------'.$row['name'].' '; $users[$i]=$row; $i ;   } echo json_encode(array('dataList'=>$users));   */   /*单条数据*/   $row=mysql_fetch_row($result,MYSQL_ASSOC);   echo json_encode(array('jsonObj'=>$row)); }   mysql_free_result($result); //释放结果 mysql_close(); //关闭连接   ?>

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<🎜> <🎜> <🎜>//SQL statement to be executed<🎜> <🎜>//Single entry<🎜> <🎜>$sql="select id,name from tbl_user where id=1";<🎜> <🎜>//Multiple pieces of data<🎜> <🎜>//$sql="select id,name from tbl_user";<🎜> <🎜> <🎜> <🎜>//Call the conn.php file to perform database operations<🎜> <🎜>require('Conn.php');<🎜> <🎜> <🎜> <🎜>//Prompt for successful operation information, note: $result exists in the conn.php file and is called out<🎜> <🎜>if($result)<🎜> <🎜>{<🎜> <🎜> <🎜> <🎜>// $array=mysql_fetch_array($result,MYSQL_ASSOC);<🎜> <🎜> <🎜> <🎜> <🎜> <🎜>/*Dataset<🎜> <🎜> <🎜> <🎜>$users=array();<🎜> <🎜>$i=0;<🎜> <🎜>while($row=mysql_fetch_array($result,MYSQL_ASSOC)){<🎜> <🎜> <🎜> <🎜>echo $row['id'].'-----------'.$row['name'].'
'; $users[$i]=$row; $i ; } echo json_encode(array('dataList'=>$users)); */ /*Single piece of data*/ $row=mysql_fetch_row($result,MYSQL_ASSOC); echo json_encode(array('jsonObj'=>$row)); } mysql_free_result($result); //Release results mysql_close(); //Close the connection ?>

http://www.bkjia.com/PHPjc/985142.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/985142.htmlTechArticlephp simple implementation of querying the database and returning json data sample code one: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 // Set return...