Practical PHP file upload code demonstration_PHP tutorial

After a long period of development of PHP, many users know PHP very well. Here I will publish the PHP file upload code and discuss it with everyone. PHP itself is a simple yet powerful language. The PHP language has core features such as powerful string and array processing capabilities, and has greatly improved support for object-oriented programming (PHP5 and above). By using standard and optional extension modules, PHP applications can connect to more than a dozen databases such as MySQL or Oracle, draw, create PDF files, and create and parse XML files. You can also use C language to write your own PHP extension module.

For example, provide a PHP interface function in an existing code base. You can also run PHP under Windows, use COM to control other Windows applications such as Word and Excel, or use ODBC to connect to a database. In China, PHP once kept pace with Microsoft's ASP and was a commonly used network programming language. ASP3.0 has been abandoned by Microsoft and will no longer be updated. Some people may think that PHP is also going to be dead soon, right? However, the fact is exactly the opposite. PHP is not only developing at a high speed, leaving ASP far behind, but also gradually becoming the most widely used and popular language on the Internet.

PHP upload file code

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span class="tag-name">html</span><span class="tag">></span><span class="tag"><span class="tag-name">head</span><span class="tag">></span><span> </span></span><li class="">
<span></span><span class="tag"><span class="tag-name">title</span><span class="tag">></span><span>上载文件表单</span><span class="tag"></span><span class="tag-name">title</span><span class="tag">></span><span class="tag"></span><span class="tag-name">head</span><span class="tag">></span><span>   </span></span>
</li>
<li class="alt">
<span></span><span class="tag"><span class="tag-name">body</span><span class="tag">></span><span>   </span></span>
</li>
<li class="">
<span></span><span class="tag"><span class="tag-name">form</span><span> </span><span class="attribute">enctype</span><span>=</span><span class="attribute-value">"multipart/form-data"</span><span> </span><span class="attribute">action</span><span>=</span><span class="attribute-value">""</span><span> </span><span class="attribute">method</span><span>=</span><span class="attribute-value">"post"</span><span class="tag">></span><span>   </span></span>
</li>
<li class="alt">
<span>请选择文件： </span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span> </span></span>
</li>
<li class="">
<span></span><span class="tag"><span class="tag-name">input</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"upload_file"</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"file"</span><span class="tag">></span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span> </span></span><li class="alt">
<span></span><span class="tag"><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"submit"</span><span> </span><span class="attribute">value</span><span>=</span><span class="attribute-value">"上传文件"</span><span class="tag">></span><span>   </span></span>
</li>
<li class="">
<span></span><span class="tag"></span><span class="tag-name">form</span><span class="tag">></span><span>   </span>
</li></span>
</li>
<li class="alt">
<span></span><span class="tag"></span><span class="tag-name">body</span><span class="tag">></span><span> </span>
</li></span><li class="">
<span></span><span class="tag"></span><span class="tag-name">html</span><span class="tag">></span><span>   </span>
</li></span></li>
<li class="alt">
<span></span><span class="tag"></span><span> </span>
</li>
<li class="">
<span>$</span><span class="attribute">upload_file</span><span>=$_FILES['upload_file']['tmp_name'];  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">upload_file_name</span><span>=$_FILES['upload_file']['name'];  </span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span>if($upload_file){  </span></li>
<li class="">
<span>$</span><span class="attribute">file_size_max</span><span> = </span><span class="attribute-value">1000</span><span>*1000;// 1M限制文件上传最大容量(bytes)  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">store_dir</span><span> = </span><span class="attribute-value">"d:/"</span><span>;// 上传文件的储存位置  </span>
</li>
<li class="">
<span>$</span><span class="attribute">accept_overwrite</span><span> = </span><span class="attribute-value">1</span><span>;//是否允许覆盖相同文件  </span>
</li>
<li class="alt"><span>// 检查文件大小  </span></li>
<li class="">
<span>if ($upload_file_size </span><span class="tag">></span><span> $file_size_max) {  </span>
</li>
<li class="alt"><span>echo "对不起，你的文件容量大于规定";  </span></li>
<li class=""><span>exit;  </span></li>
<li class="alt"><span>}  </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>// 检查读写文件  </span></li>
<li class=""><span>if (file_exists($store_dir . $upload_file_name) && !$accept_overwrite) {  </span></li>
<li class="alt"><span>Echo "存在相同文件名的文件";  </span></li>
<li class=""><span>exit;  </span></li>
<li class="alt"><span>}  </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>//复制文件到指定目录  </span></li>
<li class=""><span>if (!move_uploaded_file($upload_file,$store_dir.$upload_file_name)) {  </span></li>
<li class="alt"><span>echo "复制文件失败";  </span></li>
<li class=""><span>exit;  </span></li>
<li class="alt"><span>}  </span></li>
<li class=""><span> </span></li>
<li class="alt"><span>}  </span></li>
<li class=""><span> </span></li>
<li class="alt">
<span>Echo "</span><span class="tag"><span class="tag-name">p</span><span class="tag">></span><span>你上传了文件:";  </span></span>
</li>
<li class=""><span>echo$_FILES['upload_file']['name'];  </span></li>
<li class="alt">
<span>echo "</span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span>";  </span></span>
</li>
<li class=""><span>//客户端机器文件的原名称。   </span></li>
<li class="alt"><span> </span></li>
<li class=""><span>Echo "文件的 MIME 类型为:";  </span></li>
<li class="alt"><span>echo $_FILES['upload_file']['type'];  </span></li>
<li class=""><span>//文件的 MIME 类型，需要浏览器提供该信息的支持，例如“image/gif”。   </span></li>
<li class="alt">
<span>echo "</span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span>";  </span></span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span>Echo "上传文件大小:";  </span></li>
<li class=""><span>echo $_FILES['upload_file']['size'];  </span></li>
<li class="alt"><span>//已上传文件的大小，单位为字节。   </span></li>
<li class="">
<span>echo "</span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span>";  </span></span>
</li>
<li class="alt"><span> </span></li>
<li class=""><span>Echo "文件上传后被临时储存为:";  </span></li>
<li class="alt"><span>echo $_FILES['upload_file']['tmp_name'];  </span></li>
<li class=""><span>//文件被上传后在服务端储存的临时文件名。   </span></li>
<li class="alt">
<span>echo "</span><span class="tag"><span class="tag-name">br</span><span class="tag">></span><span>";  </span></span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span> </span></li>
<li class="">
<span>$</span><span class="attribute">Erroe</span><span>=$_FILES['upload_file']['error'];  </span>
</li>
<li class="alt"><span>switch($Erroe){  </span></li>
<li class=""><span>case 0:  </span></li>
<li class="alt"><span>Echo "上传成功"; break;  </span></li>
<li class=""><span>case 1:  </span></li>
<li class="alt"><span>Echo "上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值."; break;  </span></li>
<li class=""><span>case 2:  </span></li>
<li class="alt"><span>Echo "上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值。";break;  </span></li>
<li class=""><span>case 3:  </span></li>
<li class="alt"><span>Echo "文件只有部分被上传";break;  </span></li>
<li class=""><span>case 4:  </span></li>
<li class="alt"><span>Echo "没有文件被上传";break;  </span></li>
<li class=""><span>}  </span></li>
<li class="alt">
<span></span><span class="tag">?></span><span> </span>
</li>
</ol>

The above is the detailed PHP file upload code, I hope it will be helpful to everyone.

http://www.bkjia.com/PHPjc/446559.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446559.htmlTechArticleAfter a long period of development of PHP, many users know PHP very well. Here I will publish the PHP file upload code, Discuss with everyone. PHP itself is a simple yet powerful language. PHP language...