使用MySqli和数组返回多行

Question

在过去的两天左右,我一直在将我的功能转换为mysqli.我遇到了一个问题.我有一个函数返回一个包含数据库中一行的数组.但是,我希望数组包含多行而不是一行.另外,我如何能够回应各个帖子.这是我的失败尝试,只显示数组中的一行.

$mysqli = new mysqli("localhost", "user", "password", "database");   

function display_posts ($mysqli, $user_id) {

   $fields = "`primary_id`, `poster_id`, `profile_user_id`, `post`";   

   $user_id = (int)$user_id;

   $query = "SELECT DISTINCT $fields FROM `posts` WHERE `profile_user_id` = $user_id 
   LIMIT 4";                    

   if ($result = $mysqli->query($query)) {

   $row = $result->fetch_assoc();

   return $row;

   $result->free();

   $stmt->close();

}}

在这里,我试图显示数据.

$user_id = 1;

$posts = display_posts($mysqli, $user_id);

//Not sure what to do with $posts. A While loop perhaps to display each post?

Answer 1

你必须使用一个循环来同时获取它们:

<?php
function resultToArray($result) {
    $rows = array();
    while($row = $result->fetch_assoc()) {
        $rows[] = $row;
    }
    return $rows;
}

// Usage
$query = 'SELECT DISTINCT $fields FROM `posts` WHERE `profile_user_id` = $user_id LIMIT 4';
$result = $mysqli->query($query);
$rows = resultToArray($result);
var_dump($rows); // Array of rows
$result->free();

Answer 2

为什么不直接使用这样:

$result = mysqli_fetch_all($mysqli->query($query), MYSQLI_ASSOC);