Home Backend Development PHP Tutorial PHP uses iframe to upload and display images

PHP uses iframe to upload and display images

Jan 02, 2018 pm 03:21 PM
iframe php upload

I have been working on an image upload function these days. I originally wanted to use ajax to upload images to achieve instant refresh, but it has never been possible. Later, I used the iframe framework to achieve it. Let me share it with you now and give it as a reference for everyone. I hope to be helpful.

However, there is a problem with using this framework. After I upload the image, I need to return the uploaded path to this framework, so how to take it out? At first, I output the value directly to the iframe, but When I went to take out the path, there was no response. I kept checking the information online, but the various versions did not provide a comprehensive explanation of how to use iframe to upload images and then realize the real-time refresh function, so I had to study it myself. Most of them say how to upload is enough. I know how to do this. It’s really uncomfortable to stop here. I can only study it myself

Since the value is output to the page after the upload is successful in the iframe, it cannot I took it out, tried N methods, and checked N amounts of information. It was really painful.

Later, add a src in the iframe, and then write the output value into a simple javascript statement and output it after the image is uploaded successfully, hehe. Let’s summarize:

html code:

<iframe id="upload_target" name="upload_target" src="upload.php" style="width:0;heigth:0;overflow:hidden;border:0;position: absolute; left:-500px;"></iframe> //iframe设置成隐藏的,src链接的页面为图片上传的后台文件页面,不过加不加影响都不大,只不过为了更精确而已
<img id="tag_img" src="" />
<form enctype="multipart/form-data" action="upload.php" method="post" target="upload_target">
   <input type="file" name="userfile" class="file" value="" />
   <input type="submit" name="uploadimg" value="上传" />
</form> //表单的那么值对应着空框架的那么值,提交后跳转到空框架中,这样就不对父窗口页面进行刷新了

After submission to the background upload.php page for verification. There will be a self-set path generated

Then after we successfully update the image, we can take out this path, change the image path in the picture box in the parent window through JS, and reassign it, which is equivalent to refreshing. Instead of having to go to the database to fetch the saved path address and update it every time the update is successful.

Here I only write the js code to be returned

echo "<script type=&#39;text/javascript&#39;>window.parent.document.getElementByIdx_x(&#39;tag_img&#39;).setAttribute(&#39;src&#39;,&#39;$updurl&#39;);</script>";
    //这就是在框架中输出一段js代码,然后操作父框架中图片地址刷新成我上传的图片地址,$updurl为上传图片的地址

This way, I can easily upload images without refreshing the page, and the images can be refreshed in time.

Related recommendations:

PHP image file upload implementation code

# #php Image thumbnail implementation method

PHP Principle analysis and code of image file upload

The above is the detailed content of PHP uses iframe to upload and display images. For more information, please follow other related articles on the PHP Chinese website!

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

Undress AI Tool

Undress AI Tool

Undress images for free

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.

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)

Hot Topics

PHP Tutorial
1503
276
PHP calls AI intelligent voice assistant PHP voice interaction system construction PHP calls AI intelligent voice assistant PHP voice interaction system construction Jul 25, 2025 pm 08:45 PM

User voice input is captured and sent to the PHP backend through the MediaRecorder API of the front-end JavaScript; 2. PHP saves the audio as a temporary file and calls STTAPI (such as Google or Baidu voice recognition) to convert it into text; 3. PHP sends the text to an AI service (such as OpenAIGPT) to obtain intelligent reply; 4. PHP then calls TTSAPI (such as Baidu or Google voice synthesis) to convert the reply to a voice file; 5. PHP streams the voice file back to the front-end to play, completing interaction. The entire process is dominated by PHP to ensure seamless connection between all links.

How to use PHP to build social sharing functions PHP sharing interface integration practice How to use PHP to build social sharing functions PHP sharing interface integration practice Jul 25, 2025 pm 08:51 PM

The core method of building social sharing functions in PHP is to dynamically generate sharing links that meet the requirements of each platform. 1. First get the current page or specified URL and article information; 2. Use urlencode to encode the parameters; 3. Splice and generate sharing links according to the protocols of each platform; 4. Display links on the front end for users to click and share; 5. Dynamically generate OG tags on the page to optimize sharing content display; 6. Be sure to escape user input to prevent XSS attacks. This method does not require complex authentication, has low maintenance costs, and is suitable for most content sharing needs.

How to use PHP combined with AI to achieve text error correction PHP syntax detection and optimization How to use PHP combined with AI to achieve text error correction PHP syntax detection and optimization Jul 25, 2025 pm 08:57 PM

To realize text error correction and syntax optimization with AI, you need to follow the following steps: 1. Select a suitable AI model or API, such as Baidu, Tencent API or open source NLP library; 2. Call the API through PHP's curl or Guzzle and process the return results; 3. Display error correction information in the application and allow users to choose whether to adopt it; 4. Use php-l and PHP_CodeSniffer for syntax detection and code optimization; 5. Continuously collect feedback and update the model or rules to improve the effect. When choosing AIAPI, focus on evaluating accuracy, response speed, price and support for PHP. Code optimization should follow PSR specifications, use cache reasonably, avoid circular queries, review code regularly, and use X

PHP creates a blog comment system to monetize PHP comment review and anti-brush strategy PHP creates a blog comment system to monetize PHP comment review and anti-brush strategy Jul 25, 2025 pm 08:27 PM

1. Maximizing the commercial value of the comment system requires combining native advertising precise delivery, user paid value-added services (such as uploading pictures, top-up comments), influence incentive mechanism based on comment quality, and compliance anonymous data insight monetization; 2. The audit strategy should adopt a combination of pre-audit dynamic keyword filtering and user reporting mechanisms, supplemented by comment quality rating to achieve content hierarchical exposure; 3. Anti-brushing requires the construction of multi-layer defense: reCAPTCHAv3 sensorless verification, Honeypot honeypot field recognition robot, IP and timestamp frequency limit prevents watering, and content pattern recognition marks suspicious comments, and continuously iterate to deal with attacks.

PHP realizes commodity inventory management and monetization PHP inventory synchronization and alarm mechanism PHP realizes commodity inventory management and monetization PHP inventory synchronization and alarm mechanism Jul 25, 2025 pm 08:30 PM

PHP ensures inventory deduction atomicity through database transactions and FORUPDATE row locks to prevent high concurrent overselling; 2. Multi-platform inventory consistency depends on centralized management and event-driven synchronization, combining API/Webhook notifications and message queues to ensure reliable data transmission; 3. The alarm mechanism should set low inventory, zero/negative inventory, unsalable sales, replenishment cycles and abnormal fluctuations strategies in different scenarios, and select DingTalk, SMS or Email Responsible Persons according to the urgency, and the alarm information must be complete and clear to achieve business adaptation and rapid response.

Beyond the LAMP Stack: PHP's Role in Modern Enterprise Architecture Beyond the LAMP Stack: PHP's Role in Modern Enterprise Architecture Jul 27, 2025 am 04:31 AM

PHPisstillrelevantinmodernenterpriseenvironments.1.ModernPHP(7.xand8.x)offersperformancegains,stricttyping,JITcompilation,andmodernsyntax,makingitsuitableforlarge-scaleapplications.2.PHPintegrateseffectivelyinhybridarchitectures,servingasanAPIgateway

How to build a PHP Nginx environment with MacOS to configure the combination of Nginx and PHP services How to build a PHP Nginx environment with MacOS to configure the combination of Nginx and PHP services Jul 25, 2025 pm 08:24 PM

The core role of Homebrew in the construction of Mac environment is to simplify software installation and management. 1. Homebrew automatically handles dependencies and encapsulates complex compilation and installation processes into simple commands; 2. Provides a unified software package ecosystem to ensure the standardization of software installation location and configuration; 3. Integrates service management functions, and can easily start and stop services through brewservices; 4. Convenient software upgrade and maintenance, and improves system security and functionality.

Building Resilient Microservices with PHP and RabbitMQ Building Resilient Microservices with PHP and RabbitMQ Jul 27, 2025 am 04:32 AM

To build a flexible PHP microservice, you need to use RabbitMQ to achieve asynchronous communication, 1. Decouple the service through message queues to avoid cascade failures; 2. Configure persistent queues, persistent messages, release confirmation and manual ACK to ensure reliability; 3. Use exponential backoff retry, TTL and dead letter queue security processing failures; 4. Use tools such as supervisord to protect consumer processes and enable heartbeat mechanisms to ensure service health; and ultimately realize the ability of the system to continuously operate in failures.

See all articles