PHP上传多个图片并校验的代码
单张的图片上传是不复杂的,这里涉及到多张图片上传和对图片格式的校验,保证上传的一定是图片,防止上传其他文件到服务器。
基本实现算法是使用数组的形式,把所有的图片提交个一个数组,对数组的元素进行一个个的处理。
以下为引用的内容:
// 图片目录
$img_dir = "../upload/";
// …… html 显示上传界面
/* 图片上传处理 */
// 把图片传到服务器
// 初始化变量
$uploaded = 0;
$unuploaded = 0;
//只允许五张图片上传
for ($i=0; $i
{
//获取当前图片的信息
$is_file = $_FILES['imgfile']['name'][$i];
//如果当前图片不为空
if (!empty($is_file))
{
//把当前图片的信息存储到变量里
$result[$i] = "
". $_FILES['imgfile']['name'][$i] ."
". round($_FILES['imgfile']['size'][$i]/1024, 2) ."K
". $_FILES['imgfile']['type'][$i] ."
";
// 判断上传的图片的类型是不是jpg,gif,png,bmp中的一种,同时判断是否上传成功
if (
$_FILES['imgfile']['type'][$i] == "image/pjpeg" ||
$_FILES['imgfile']['type'][$i] == "image/gif" ||
$_FILES['imgfile']['type'][$i] == "image/x-png" ||
$_FILES['imgfile']['type'][$i] == "image/bmp"
)
{
//如果上传的文件没有在服务器上存在
if (!file_exists($img_dir . $_FILES['imgfile']['name'][$i]))
{
//把图片文件从临时文件夹中转移到我们指定上传的目录中
move_uploaded_file($_FILES['imgfile']['tmp_name'][$i],
$img_dir . $_FILES['imgfile']['name'][$i]);
$result[$i] .= "成功";
$uploaded++;
}
else //如果文件已经在服务器上存在
{

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
