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Specific usage of PHP upload class upload.php_PHP tutorial

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Jul 15, 2016 pm 01:29 PM

phpuploadforcodeInstructionsaboutspecificbringusyesofkind

What we bring to you today is the specific code for as follows:

<ol class="dp-xml">
<li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span> </span></span></li>
<li class=""><span> </span></li>
<li class="alt"><span>/**  </span></li>
<li class=""><span> * 我的文件上传类  </span></li>
<li class="alt"><span> *  </span></li>
<li class=""><span> * 未完成的功能：  </span></li>
<li class="alt"><span> * 1.对目标目录是否存在的判断  </span></li>
<li class=""><span> * 2.如果上传时出现重名，自动重命名  </span></li>
<li class="alt"><span> *   </span></li>
<li class="">
<span> * @author M.Q. </span><span class="tag"><strong><font color="#006699"></font></strong></span><span>[url]www.mengqi.net[/url]</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="alt"><span> */  </span></li>
<li class=""><span>class upload  </span></li>
<li class="alt"><span>{  </span></li>
<li class=""><span>    /**  </span></li>
<li class="alt"><span>     * PHP上传类upload.php上传文件的信息，此值由构造函数取得，如果上传文件失败或出错或未上传，则此值为false  </span></li>
<li class=""><span>     *  </span></li>
<li class="alt"><span>     * @var array  </span></li>
<li class=""><span>     */  </span></li>
<li class="alt">
<span>    private $</span><span class="attribute"><font color="#ff0000">file</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">false</font></span><span>;   </span>
</li>
<li class=""><span>      </span></li>
<li class="alt"><span>     </span></li>
<li class=""><span>    /**  </span></li>
<li class="alt"><span>     * 构造函数：取得上传文件的信息  </span></li>
<li class=""><span>     *   </span></li>
<li class="alt"><span>     * 如果在上传文件的工程中发生错误，那么出错的文件不会放在结果中返回，结果中的文件都是可用的  </span></li>
<li class=""><span>     *  </span></li>
<li class="alt">
<span>     * @param string $tag form表单中</span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span><span class="tag">></span></span></font></strong><span>标签中name属性的值，例</span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"p"</font></span><span> </span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class=""><span>     *   </span></li>
<li class="alt"><span>     * 例1，上传单个文件：  </span></li>
<li class="">
<span>     * </span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"upfile"</font></span><span> </span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="alt"><span>     *   </span></li>
<li class=""><span>     * 例2，上传多个文件：  </span></li>
<li class="alt">
<span>     * </span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"upfile[]"</font></span><span> </span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="">
<span>     * </span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> </span><span class="attribute"><font color="#ff0000">name</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"upfile[]"</font></span><span> </span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span>
</li>
<li class="alt"><span>     *   </span></li>
<li class=""><span>     * 结果（保存在$file变量中）如下：  </span></li>
<li class="alt"><span>     *   </span></li>
<li class=""><span>     * array(  </span></li>
<li class="alt">
<span>     * [0] =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> array(  </span>
</li>
<li class="">
<span>     *      'name'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 'abc.txt'  </span>
</li>
<li class="alt">
<span>     *      'type'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 'text/plain’  </span>
</li>
<li class="">
<span>     *      'tmp_name'  =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> '/tmp/phpgxecCb'  </span>
</li>
<li class="alt">
<span>     *      'error'     =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 0  </span>
</li>
<li class="">
<span>     *      'size'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 62  </span>
</li>
<li class="alt"><span>     *      )  </span></li>
<li class="">
<span>     * [1] =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> array(  </span>
</li>
<li class="alt">
<span>     *      'name'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 'abc.txt'  </span>
</li>
<li class="">
<span>     *      'type'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 'text/plain’  </span>
</li>
<li class="alt">
<span>     *      'tmp_name'  =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> '/tmp/phpgxecCb'  </span>
</li>
<li class="">
<span>     *      'error'     =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 0  </span>
</li>
<li class="alt">
<span>     *      'size'      =</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 62  </span>
</li>
<li class=""><span>     *      )  </span></li>
<li class="alt"><span>     * )  </span></li>
<li class=""><span>     */  </span></li>
<li class="alt"><span>    public function __construct($tag)  </span></li>
<li class=""><span>    {  </span></li>
<li class="alt">
<span>        $</span><span class="attribute"><font color="#ff0000">file</font></span><span> = $_FILES[$tag];  </span>
</li>
<li class=""><span>                 </span></li>
<li class="alt"><span>        if (!isset($file) || empty($file))   </span></li>
<li class=""><span>        {  </span></li>
<li class="alt"><span>            return; //没有上传文件  </span></li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>          </span></li>
<li class="">
<span>        $</span><span class="attribute"><font color="#ff0000">num</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">count</font></span><span>($file['name']); //PHP上传类upload.php上传文件的个数  </span>
</li>
<li class="alt"><span>          </span></li>
<li class="">
<span>        $</span><span class="attribute"><font color="#ff0000">data</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">array</font></span><span>(); //用来保存上传文件的信息的数组  </span>
</li>
<li class="alt"><span> </span></li>
<li class=""><span>        //上传了多个文件  </span></li>
<li class="alt">
<span>        if ($num </span><span class="tag"><strong><font color="#006699">></font></strong></span><span> 1)  </span>
</li>
<li class=""><span>        {  </span></li>
<li class="alt">
<span>            for($</span><span class="attribute"><font color="#ff0000">i</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">0</font></span><span>; $i </span><span class="tag"><strong><font color="#006699"></font></strong></span><span> $num; $i++)  </span>
</li>
<li class=""><span>            {  </span></li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">d</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">array</font></span><span>();  </span>
</li>
<li class=""><span>                $d['name']       = $file['name'][$i];  </span></li>
<li class="alt"><span>                $d['type']       = $file['type'][$i];  </span></li>
<li class=""><span>                $d['tmp_name']   = $file['tmp_name'][$i];  </span></li>
<li class="alt"><span>                $d['error']      = $file['error'][$i];  </span></li>
<li class=""><span>                $d['size']       = $file['size'][$i];  </span></li>
<li class="alt"><span>                  </span></li>
<li class=""><span>                if ($d['error'] == 0)  </span></li>
<li class="alt"><span>                {  </span></li>
<li class=""><span>                    $data[] = $d;  </span></li>
<li class="alt"><span>                }  </span></li>
<li class=""><span>                else   </span></li>
<li class="alt"><span>                {  </span></li>
<li class=""><span>                    @unlink($d['tmp_name']);  </span></li>
<li class="alt"><span>                }  </span></li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>        }  </span></li>
<li class=""><span>        //只上传了一个文件  </span></li>
<li class="alt"><span>        else   </span></li>
<li class=""><span>        {  </span></li>
<li class="alt">
<span>            $</span><span class="attribute"><font color="#ff0000">d</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">array</font></span><span>();  </span>
</li>
<li class=""><span>            $d['name']       = $file['name'];  </span></li>
<li class="alt"><span>            $d['type']       = $file['type'];  </span></li>
<li class=""><span>            $d['tmp_name']   = $file['tmp_name'];  </span></li>
<li class="alt"><span>            $d['error']      = $file['error'];  </span></li>
<li class=""><span>            $d['size']       = $file['size'];  </span></li>
<li class="alt"><span>              </span></li>
<li class=""><span>            if ($d['error'] == 0)  </span></li>
<li class="alt"><span>            {  </span></li>
<li class=""><span>                $data[] = $d;  </span></li>
<li class="alt"><span>            }  </span></li>
<li class=""><span>            else   </span></li>
<li class="alt"><span>            {  </span></li>
<li class=""><span>                @unlink($d['tmp_name']);  </span></li>
<li class="alt"><span>            }  </span></li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>          </span></li>
<li class=""><span>        if (empty($data)) return;  </span></li>
<li class="alt"><span>          </span></li>
<li class="">
<span>        $this -</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span><span class="attribute"><font color="#ff0000">file</font></span><span> = $data; //保存上传文件的信息  </span>
</li>
<li class="alt"><span>    }  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /**  </span></li>
<li class=""><span>     * 将上传的文件从临时文件夹移动到目标路径  </span></li>
<li class="alt"><span>     *  </span></li>
<li class=""><span>     * @param array $src 文件信息数组，是$file数组的其中一个元素（仍然是数组）  </span></li>
<li class="alt"><span>     * @param string $destpath 上传的目标路径  </span></li>
<li class=""><span>     * @param string $filename 上传后的文件名，如果为空，则使用上传时的文件名  </span></li>
<li class="alt"><span>     * @return bool  </span></li>
<li class=""><span>     */  </span></li>
<li class="alt">
<span>    public function save($src, $destpath, $</span><span class="attribute"><font color="#ff0000">filename</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">null</font></span><span>)  </span>
</li>
<li class=""><span>    {  </span></li>
<li class="alt">
<span>        $</span><span class="attribute"><font color="#ff0000">srcTName</font></span><span> = $src['tmp_name']; //原始上传文件的临时文件名  </span>
</li>
<li class="">
<span>        $</span><span class="attribute"><font color="#ff0000">srcFName</font></span><span> = $src['name'];     //原始文件名  </span>
</li>
<li class="alt"><span>          </span></li>
<li class=""><span>        //如果$filename参数为空，则使用上传时的文件名  </span></li>
<li class="alt"><span>        if (empty($filename))  </span></li>
<li class=""><span>        {  </span></li>
<li class="alt">
<span>            $</span><span class="attribute"><font color="#ff0000">filename</font></span><span> = $srcFName;  </span>
</li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>          </span></li>
<li class=""><span>        //$dest是文件最终要复制到的路径和文件名  </span></li>
<li class="alt"><span>        if (empty($destpath))  </span></li>
<li class=""><span>        {  </span></li>
<li class="alt">
<span>            $</span><span class="attribute"><font color="#ff0000">dest</font></span><span> = $filename;  </span>
</li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>        else   </span></li>
<li class=""><span>        {  </span></li>
<li class="alt"><span>            //修正路径中的斜杠，将末尾的修改为/，如果末尾不是也不是/，则给末尾添加一个/  </span></li>
<li class="">
<span>            $</span><span class="attribute"><font color="#ff0000">pathend</font></span><span> = $destpath[strlen($destpath) - 1]; //上传的目标路径的最后一个字符  </span>
</li>
<li class="alt">
<span>            if ($</span><span class="attribute"><font color="#ff0000">pathend</font></span><span> == '\')  </span>
</li>
<li class=""><span>            {  </span></li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">dest</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">substr_replace</font></span><span>($destpath, '/', strlen($destpath)-1).$filename;  </span>
</li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>            else if ($pathend != '/')  </span></li>
<li class=""><span>            {  </span></li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">dest</font></span><span> = $destpath.'/'.$filename;  </span>
</li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>            else   </span></li>
<li class=""><span>            {  </span></li>
<li class="alt">
<span>                $</span><span class="attribute"><font color="#ff0000">dest</font></span><span> = $destpath.$filename;  </span>
</li>
<li class=""><span>            }  </span></li>
<li class="alt"><span>        }  </span></li>
<li class=""><span>            </span></li>
<li class="alt"><span>        //上传文件成功  </span></li>
<li class=""><span>        if (@move_uploaded_file($srcTName, $dest))  </span></li>
<li class="alt"><span>        {  </span></li>
<li class=""><span>              </span></li>
<li class="alt"><span>            return true;   </span></li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>        else   </span></li>
<li class=""><span>        {  </span></li>
<li class="alt"><span>            return false;  </span></li>
<li class=""><span>        }  </span></li>
<li class="alt"><span>    }  </span></li>
<li class=""><span>      </span></li>
<li class="alt"><span>    /**  </span></li>
<li class=""><span>     * 取得上传文件的信息  </span></li>
<li class="alt"><span>     *  </span></li>
<li class=""><span>     * @return array  </span></li>
<li class="alt"><span>     */  </span></li>
<li class=""><span>    public function getFileInfo()  </span></li>
<li class="alt"><span>    {  </span></li>
<li class="">
<span>        return $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file;  </span>
</li>
<li class="alt"><span>    }  </span></li>
<li class=""><span>}  </span></li>
<li class="alt"><span> </span></li>
<li class=""><span> </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">a</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">new</font></span><span> upload('upfile');  </span>
</li>
<li class=""><span> </span></li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">fileinfo</font></span><span> = $a -</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> getFileInfo();  </span>
</li>
<li class="">
<span>if ($</span><span class="attribute"><font color="#ff0000">fileinfo</font></span><span> == false)  </span>
</li>
<li class="alt"><span>{  </span></li>
<li class=""><span>    echo '没有上传文件！';  </span></li>
<li class="alt"><span>    exit;  </span></li>
<li class=""><span>}  </span></li>
<li class="alt"><span> </span></li>
<li class="">
<span>for($</span><span class="attribute"><font color="#ff0000">i</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">0</font></span><span>; $i </span><span class="tag"><strong><font color="#006699"></font></strong></span><span> </span><span class="tag-name"><strong><font color="#006699">count</font></strong></span><span>($fileinfo); $i++)  </span>
</li>
<li class="alt"><span>{  </span></li>
<li class=""><span>    echo '正在上传 '.$fileinfo[$i]['name'].' ';  </span></li>
<li class="alt">
<span>    if ($a -</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> save($fileinfo[$i], 'upload')) echo '完毕';  </span>
</li>
<li class=""><span>    else echo '失败';  </span></li>
<li class="alt">
<span>    echo '</span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">></span></span></font></strong><span>';  </span>
</li>
<li class=""><span>}  </span></li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span>
</li>
</ol>

The above code is specific about the PHP upload class upload.php How to use.

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Key players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.

Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1?Apr 17, 2025 am 12:06 AM

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP: An Introduction to the Server-Side Scripting LanguageApr 16, 2025 am 12:18 AM

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 and the Web: Exploring its Long-Term ImpactApr 16, 2025 am 12:17 AM

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.

Why Use PHP? Advantages and Benefits ExplainedApr 16, 2025 am 12:16 AM

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.

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Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software