Home php教程 php手册 Ajax+PHP边学边练 之五 图片处理

Ajax+PHP边学边练 之五 图片处理

Jun 13, 2016 pm 12:20 PM
form create picture deal with copy

先上个效果图:

 
Sample6_1.php 中创建Form:

复制代码 代码如下:


//显示上传状态和图片


//上传文件需要定义enctype,为了显示图片将target设为uploadframe
enctype="multipart/form-data" target="uploadframe">
Upload a File:


//上传文件




上传图片函数 uploadimg:

复制代码 代码如下:


function uploadimg(theform){
//提交Form
theform.submit();
//在showimg

中显示上传状态
setStatus ("Loading...","showimg");
}
//上传状态函数
function setStatus (theStatus, theObj){
obj = document.getElementById(theObj);
if (obj){
obj.innerHTML = "
" + theStatus + "
";
}
}

process_upload.php 提供文件上传功能:

复制代码 代码如下:


//提供图片类型校验
$allowedtypes = array("image/jpeg","image/pjpeg","image/png", "image/x-png","image/gif");
//文件存放目录
$savefolder = "images";

//如果有文件上传就开始干活
if (isset ($_FILES['myfile'])){
//检查上传文件是否符合$allowedtypes类型
if (in_array($_FILES['myfile']['type'],$allowedtypes)){
if ($_FILES['myfile']['error'] == 0){
$thefile = "$savefolder/".$_FILES['myfile']['name'];
//通过move_uploaded_file上传文件
if (!move_uploaded_file($_FILES['myfile']['tmp_name'], $thefile)){
echo "There was an error uploading the file.";
}
else{
?>
BR>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">






Ajax+PHP边学边练 之五 图片处理


}
}
}
}
?>

上面代码最后部分的doneloading 函数就是用来显示图片及修改图片尺寸大小。其中会用到thumb.php,它会在images目录中生成出源图片的大、中、小三个尺寸,有兴趣可以研究一下。欢迎大家拍砖~
文中源码打包下载
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? Where is the automatically saved image when posting? How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? Where is the automatically saved image when posting? Mar 22, 2024 am 08:06 AM

With the continuous development of social media, Xiaohongshu has become a platform for more and more young people to share their lives and discover beautiful things. Many users are troubled by auto-save issues when posting images. So, how to solve this problem? 1. How to solve the problem of automatically saving pictures when publishing on Xiaohongshu? 1. Clear the cache First, we can try to clear the cache data of Xiaohongshu. The steps are as follows: (1) Open Xiaohongshu and click the "My" button in the lower right corner; (2) On the personal center page, find "Settings" and click it; (3) Scroll down and find the "Clear Cache" option. Click OK. After clearing the cache, re-enter Xiaohongshu and try to post pictures to see if the automatic saving problem is solved. 2. Update the Xiaohongshu version to ensure that your Xiaohongshu

How to post pictures in TikTok comments? Where is the entrance to the pictures in the comment area? How to post pictures in TikTok comments? Where is the entrance to the pictures in the comment area? Mar 21, 2024 pm 09:12 PM

With the popularity of Douyin short videos, user interactions in the comment area have become more colorful. Some users wish to share images in comments to better express their opinions or emotions. So, how to post pictures in TikTok comments? This article will answer this question in detail and provide you with some related tips and precautions. 1. How to post pictures in Douyin comments? 1. Open Douyin: First, you need to open Douyin APP and log in to your account. 2. Find the comment area: When browsing or posting a short video, find the place where you want to comment and click the "Comment" button. 3. Enter your comment content: Enter your comment content in the comment area. 4. Choose to send a picture: In the interface for entering comment content, you will see a "picture" button or a "+" button, click

The operation process of WIN10 service host occupying too much CPU The operation process of WIN10 service host occupying too much CPU Mar 27, 2024 pm 02:41 PM

1. First, we right-click the blank space of the taskbar and select the [Task Manager] option, or right-click the start logo, and then select the [Task Manager] option. 2. In the opened Task Manager interface, we click the [Services] tab on the far right. 3. In the opened [Service] tab, click the [Open Service] option below. 4. In the [Services] window that opens, right-click the [InternetConnectionSharing(ICS)] service, and then select the [Properties] option. 5. In the properties window that opens, change [Open with] to [Disabled], click [Apply] and then click [OK]. 6. Click the start logo, then click the shutdown button, select [Restart], and complete the computer restart.

6 Ways to Make Pictures Sharper on iPhone 6 Ways to Make Pictures Sharper on iPhone Mar 04, 2024 pm 06:25 PM

Apple's recent iPhones capture memories with crisp detail, saturation and brightness. But sometimes, you may encounter some issues that may cause the image to look less clear. While autofocus on iPhone cameras has come a long way, allowing you to take photos quickly, the camera can mistakenly focus on the wrong subject in certain situations, making the photo blurry in unwanted areas. If your photos on your iPhone look out of focus or lack sharpness overall, the following post should help you make them sharper. How to Make Pictures Clearer on iPhone [6 Methods] You can try using the native Photos app to clean up your photos. If you want more features and options

How to make ppt pictures appear one by one How to make ppt pictures appear one by one Mar 25, 2024 pm 04:00 PM

In PowerPoint, it is a common technique to display pictures one by one, which can be achieved by setting animation effects. This guide details the steps to implement this technique, including basic setup, image insertion, adding animation, and adjusting animation order and timing. Additionally, advanced settings and adjustments are provided, such as using triggers, adjusting animation speed and order, and previewing animation effects. By following these steps and tips, users can easily set up pictures to appear one after another in PowerPoint, thereby enhancing the visual impact of the presentation and grabbing the attention of the audience.

What should I do if the images on the webpage cannot be loaded? 6 solutions What should I do if the images on the webpage cannot be loaded? 6 solutions Mar 15, 2024 am 10:30 AM

Some netizens found that when they opened the browser web page, the pictures on the web page could not be loaded for a long time. What happened? I checked that the network is normal, so where is the problem? The editor below will introduce to you six solutions to the problem that web page images cannot be loaded. Web page images cannot be loaded: 1. Internet speed problem The web page cannot display images. It may be because the computer's Internet speed is relatively slow and there are more softwares opened on the computer. And the images we access are relatively large, which may be due to loading timeout. As a result, the picture cannot be displayed. You can turn off the software that consumes more network speed. You can go to the task manager to check. 2. Too many visitors. If the webpage cannot display pictures, it may be because the webpages we visited were visited at the same time.

How to copy lyrics from QQ Music How to copy lyrics How to copy lyrics from QQ Music How to copy lyrics Mar 12, 2024 pm 08:22 PM

We users should be able to understand the diversity of some functions when using this platform. We know that the lyrics of some songs are very well written. Sometimes we even listen to it several times and feel that the meaning is very profound. So if we want to understand the meaning of it, we want to copy it directly and use it as copywriting. However, if we want to use it, we still need to You just need to learn how to copy lyrics. I believe that everyone is familiar with these operations, but it is indeed a bit difficult to operate on a mobile phone. So in order to give you a better understanding, today the editor is here to help you. A good explanation of some of the above operating experiences. If you also like it, come and take a look with the editor. Don’t miss it.​

How to convert pdf documents into jpg images with Foxit PDF Reader - How to convert pdf documents into jpg images with Foxit PDF Reader How to convert pdf documents into jpg images with Foxit PDF Reader - How to convert pdf documents into jpg images with Foxit PDF Reader Mar 04, 2024 pm 05:49 PM

Are you also using Foxit PDF Reader software? So do you know how Foxit PDF Reader converts pdf documents into jpg images? The following article brings you how Foxit PDF Reader converts pdf documents into jpg images. For those who are interested in the method of converting jpg images, please come and take a look below. First start Foxit PDF Reader, then find "Features" on the top toolbar, and then select the "PDF to Others" function. Next, open a web page called "Foxit PDF Online Conversion". Click the "Login" button on the upper right side of the page to log in, and then turn on the "PDF to Image" function. Then click the upload button and add the pdf file you want to convert into an image. After adding it, click "Start Conversion"

See all articles