Save Image File with PHP & MySQL - #4

list.php

<?php
require_once('functions.php');

$pdo = connectDB();

if ($_SERVER['REQUEST_METHOD'] != 'POST') {
    // 画像を取得
    $sql = 'SELECT * FROM images ORDER BY created_at DESC';
    $stmt = $pdo->prepare($sql);
    $stmt->execute();
    $images = $stmt->fetchAll();

} else {
    // 画像を保存
    if (!empty($_FILES['image']['name'])) {