


You can upload files without refreshing the page. Friends who are studying this can use it as a reference.
For information about iframe, please refer to: Detailed explanation of html iframe tag object. The code is as follows: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN"> <head> <meta http-equiv="Content-Language" content="zh-cn" /> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="robots" content="all" /> <title>Iframe无刷新上传</title> <link rel="stylesheet" type="text/css" href="template/style.css" /> </head> <body onload='iframe1.window.location="show_image.php"'> <div id="header">AJAX无刷新上传演示</div> <div id="des"> 只允许上传格式为jpg,gif,png的图片,大小不超过1000K,上传后的图片会放在临时文件夹<br /> 浏览器必须支持JavaScript和没有屏蔽Iframe,不然将看不到效果 </div> <div id="mainform"> <form action="upload.php" method="post" enctype="multipart/form-data" name="upload_img" target="iframe1"> 选择要上传的图片:<input type="file" name="image"><br /> <input type="submit" value="上传图片"> </form> </div> <div id="message" style="display:none" onclick="this.style.display='none'"></div> <table id="maintable"> <tr> <td colspan="2" id="title">临时文件夹中的全部图片</td> </tr> <tr> <td> <form method="post" name="delimage" action="del.php" target="iframe1"> [删除所有图片] </form> </td> <td> <form method="post" name="showimage" action="show_image.php" target="iframe1"> [刷新所有图片] </form> </td> </tr> <tr> <td colspan="2"><div id="show_image"></div></td> </tr> </table> <br> <iframe name="iframe1" width="0" height="0" scrolling="no"></iframe> </body> </html>The PHP upload method without refresh is most often implemented in combination with Ajax. Here is a reference example for you: Example of PHP Ajax uploading images without refresh. If you don’t know much about iframe refresh, I suggest you read: iframe refresh method. |

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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