如何连接code多行从MySQL到使用PHP JSON [英] how to encode multiple rows from mysql into json using php

问题描述

我想带code数据的所有行我从DB进入JSON，然后在客户端处理，但我似乎无法得到它work..My code低于

I am trying to encode all the rows of data i get from the DB into JSON and then process it at the client side but i can't seem to get it to work..My code is below

function getTopic($conn){
    $response = array("error" => 0);
    $qry = "SELECT original_title, content, time FROM topic WHERE vis = 1";
    $result = $conn->prepare($qry);
    $result->execute();
    if($result->rowCount() > 0){
        $output = $result->fetchall();
        $response['text'] = $output['original_title'];
        $response['test'] = $output['content'];
        return json_encode($response);
        //return $output;
    }

然后我尝试打印的var_dump（$响应），但我得到空值。虽然如果我的var_dump（$输出）我在array..accessing阵列获取所有的行是这里的问题now..i认为

Then i try to print the var_dump($response) but i get null values.. Although if i var_dump($output) i get all the rows in an array..accessing the array is the problem here now..i think

注：我使用的PDO

推荐答案

的问题是$输出是，你需要经过一个数组。这样的：

The problem is the $output is an array that you need to go through. Like:

function getTopic($conn){
    $response = array("error" => 0);
    $qry = "SELECT original_title, content, time FROM topic WHERE vis = 1";
    $result = $conn->prepare($qry);
    $result->execute();
    if($result->rowCount() > 0){
        $output = $result->fetchall();
        foreach ($output as $o){
           $response['text'] = $o['original_title'];
           $response['test'] = $o['content'];
        }
        return json_encode($response);
    }
}

这是最后的反应，但如果你希望所有，这样做：

This is for the last response, but if you want all, do:

function getTopic($conn){
    $response = array('error'=>0);
    $qry = "SELECT original_title, content, time FROM topic WHERE vis = 1";
    $result = $conn->prepare($qry);
    $result->execute();
    if($result->rowCount() > 0){
        $output = $result->fetchall();
        foreach ($output as $o){
           $response[] = array('text'=>$o['original_title'],'test'=>$o['content']);
        }
        return json_encode($response);
    }
}

如果你只想要一个行加限制你的MySQL声明。

If you are only want one row add a limit to your MySQL statement.

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