////////////////////////////////////////////////////////////////////// (2)upload.php --- //简要说明 上传界面,用户选择文件,然后提交给submit.php处理 值得注意的是一个 MAX_FILE_SIZE的隐藏值域,通过设置其VALUE可 以限制上载文件的大小。 //程序源码 <html> <head> <title>文件上传表单</title> </head> <body> <table> <form enctype='multipart/form-data' name='myform' action='submit.php' method='post'> <INPUT TYPE = "hidden" NAME = "MAX_FILE_SIZE" VALUE ="1000000"> <tr><td>选择上传文件</td><td> <input name='myfile' type='file'></td></tr> <tr><td colspan='2'><input name='submit' value='上传' type='submit'></td></tr> </table> </body> </html> (3)submit.php --- //简要说明 把用户上传得文件连同文件的基本信息保存到数据库里 //程序源码 <?php if($myfile != "none" && $myfile != "") { //有了上传文件了 //设置超时限制时间,缺省时间为 30秒,设置为0时为不限时 $time_limit=60; set_time_limit($time_limit); // //把文件内容读到字符串中 $fp=fopen($myfile, "rb"); if(!$fp) die("file open error"); $file_data = addslashes(fread($fp, filesize($myfile))); fclose($fp); unlink($myfile); //文件格式,名字,大小 $file_type=$myfile_type; $file_name=$myfile_name; $file_size=$myfile_size; //连接数据库,把文件存到数据库中 $conn=mysql_connect("127.0.0.1","***","***"); if(!$conn) die("error : mysql connect failed"); mysql_select_db("test",$conn); $sql="insert into receive (file_data,file_type,file_name,file_size) values ('$file_data','$file_type','$file_name',$file_size)"; $result=mysql_query($sql); //下面这句取出了刚才的insert语句的id $id=mysql_insert_id(); mysql_close($conn); set_time_limit(30); //恢复缺省超时设置 echo "上传成功--- "; echo "<a href='show_info.php?id=$id'>显示上传文件信息</a>"; } else { echo "你没有上传任何文件"; } ?> //////////////////////////////////////////////////////////////////////
原来在php5.0下可以使用,现在上传文件后总是报“你没有上传任何文件”,直接echo $myfile也没有
回复讨论(解决方案)
你的程序需要
register_globals = On
而 php 5.2 以后就默认
register_globals = Off
了
并且 php 5.4 已经没有这个开关了
$myfile 应写作 $_FILES['myfile']['tmp_name']
另外
$file_type = $_FILES['myfile']['type'];
$file_name = $_FILES['myfile']['name'];
$file_size = $_FILES['myfile']['size'];
未尽之处,比照执行
ok~非常感谢,就是Glob这个参数有问题了,谢谢

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

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