PHP MySQLi将文件重命名为Insert上的行ID

Question

程序员大家好，

在SQL中插入时如何将文件重命名为行ID？

让我给你举个例子：

<?php

// File Properties
$file_name = $file['name'];
$file_tmp = $file['tmp_name'];

// File extension
$file_ext = explode('.', $file_name);
$file_ext = strtolower(end($file_ext));

// File destination
$file_rename = 'ROW ID' . $file_ext; // THIS IS WHERE THE ROW ID ARE NEEDED
$file_destination = 'uploads/' . $file_rename;

if(move_uploaded_file($file_tmp, $file_destination)) {
    $connect = mysqli_connect('localhost', 'root', '', 'database');
    $query = "INSERT INTO images (image_id, image_url) VALUES ('', '$file_destination')"; // THIS IS THE INSERT WHERE I NEED THE ROW ID
    $result = mysqli_query($connect, $query);
}

?>

所有输入都表示赞赏。

Answer 1

下面给出了几种处理这种情况的方法..

1. 首先，您需要在mysql中找到下一个自动增量值以获取当前图像行ID
2. 将文件移动到具有表行标识的服务器上的所需位置
3. 在mysql中插入记录以在mysql中存储$ file_destination。

如下......

<?php

// File Properties
$file_name = $file['name'];
$file_tmp = $file['tmp_name'];

// File extension
$file_ext = explode('.', $file_name);
$file_ext = strtolower(end($file_ext));

//Perform mysql 
$connect = mysqli_connect('localhost', 'root', '', 'database');
$query = "SELECT AUTO_INCREMENT FROM information_schema.tables WHERE table_name = 'images' AND table_schema = DATABASE( )"; // THIS IS WHERE YOU GET NEXT INCREMENTAL ROW ID VALUE
$next_insert_id = mysqli_query($connect, $query);

// File destination
$file_rename = $next_insert_id . $file_ext; // THIS IS WHERE THE ROW ID ARE NEEDED
$file_destination = 'uploads/' . $file_rename;

if(move_uploaded_file($file_tmp, $file_destination)) {
    //Do update for that record in the database
    $query = "INSERT INTO images (image_url) VALUES ('$file_destination')"; // THIS IS THE UPDATE
    $result = mysqli_query($connect, $query);
}

?>

要么

1. 首先你需要执行没有行id的mysql插入。
2. 使用mysqli_insert_id（）获取最后一个插入ID以获取mysql行id。
3. 将文件移动到具有表行标识的服务器上的所需位置。
4. 在mysql中更新最后插入的记录以在mysql中存储$ file_destination。

如下......

<?php

// File Properties
$file_name = $file['name'];
$file_tmp = $file['tmp_name'];

// File extension
$file_ext = explode('.', $file_name);
$file_ext = strtolower(end($file_ext));

//Perform mysql 
$connect = mysqli_connect('localhost', 'root', '', 'database');
$query = "INSERT INTO images (image_url) VALUES ('')"; // THIS IS THE INSERT WHERE I NEED THE ROW ID
$result = mysqli_query($connect, $query);
$last_insert_id = mysqli_insert_id();

// File destination
$file_rename = $last_insert_id . $file_ext; // THIS IS WHERE THE ROW ID ARE NEEDED
$file_destination = 'uploads/' . $file_rename;

if(move_uploaded_file($file_tmp, $file_destination)) {
    //Do update for that record in the database
    $query = "UPDATE images SET (image_url) VALUES ($file_destination) WHERE image_id = $last_insert_id"; // THIS IS THE UPDATE
    $result = mysqli_query($connect, $query);
}

?>