新手必看PHP上传文件进度全面揭秘_PHP教程

php还是比较常用的，于是我研究了一下php上传文件进度 ，在这里拿出来和大家分享一下，希望对大家有用。php之所以很难实现上传进度条是因为在我们上传文件到服务器的时候，要等到文件全部送到服务器之后，才执行相应的php文件。在这之前，文件数据保存在一个临时文件里面，而php无法获得这个文件的路径及大小。

PHP上传文件进度之APC实现方法：

安装APC，参照官方文档安装，可以使用PECL模块安装方法快速简捷，这里不说明配置php.ini，设置参数apc.rfc1867=1，使APC支持上传进度条功能，在APC源码说明文档里面有说明代码范例：

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<OL class=dp-xml><LI class=alt><SPAN><SPAN>if($_SERVER['REQUEST_METHOD']=='POST'){//上传请求  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>status</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>apc_fetch</FONT></SPAN><SPAN>('upload_'.$_POST['APC_UPLOAD_PROGRESS']);  </SPAN></SPAN><LI class=alt><SPAN>$status['done']=1;  </SPAN><LI class=""><SPAN>echojson_encode($status);//输出给用户端页面里的ajax调用，相关文档请自己寻找  </SPAN><LI class=alt><SPAN>exit;  </SPAN><LI class=""><SPAN>}elseif(isset($_GET['progress_key'])){//读取上传进度  </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>status</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>apc_fetch</FONT></SPAN><SPAN>('upload_'.$_GET['progress_key']);  </SPAN></SPAN><LI class=""><SPAN>echojson_encode($status);  </SPAN><LI class=alt><SPAN>exit;  </SPAN><LI class=""><SPAN>}else{  </SPAN><LI class=alt><SPAN>//其他代码，比如上传表单等  </SPAN><LI class=""><SPAN>} </SPAN></LI></OL>

PHP上传文件进度之uploadprogress模块实现方法：

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使用PECL模块安装方法安装该模块php.ini里面设置uploadprogress.file.filename_template=“/tmp/upd_%s.txt”代码范例：

<OL class=dp-xml><LI class=alt><SPAN><SPAN>if($_SERVER['REQUEST_METHOD']=='POST'){  </SPAN></SPAN><LI class=""><SPAN>if(is_uploaded_file($_FILES['upfile']['tmp_name'])){  </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>upload_dir</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>'your_path/'</FONT></SPAN><SPAN>;  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>ext</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>strrchr</FONT></SPAN><SPAN>($_FILES['video']['name'],'.');  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>sessid</FONT></SPAN><SPAN>=$_POST['UPLOAD_IDENTIFIER'];  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>tmpfile</FONT></SPAN><SPAN>=$upload_dir.$sessid;  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>sessfile</FONT></SPAN><SPAN>=$upload_dir.$sessid.$ext;  </SPAN></SPAN><LI class=""><SPAN>if(move_uploaded_file($_FILES['upfile']['tmp_name'],$tmpfile)){  </SPAN><LI class=alt><SPAN>//上传成功  </SPAN><LI class=""><SPAN>}else{  </SPAN><LI class=alt><SPAN>//上传失败  </SPAN><LI class=""><SPAN>}else{  </SPAN><LI class=alt><SPAN>//上传错误  </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>}elseif(!empty($_GET['sessid'])){  </SPAN><LI class=""><SPAN>header("Expires:Mon,26Jul199705:00:00GMT");  </SPAN><LI class=alt><SPAN>header("Last-Modified:".gmdate("D,dMYH:i:s")."GMT");  </SPAN><LI class=""><SPAN>header("Cache-Control:no-store,no-cache,must-revalidate");  </SPAN><LI class=alt><SPAN>header("</SPAN><SPAN class=attribute><FONT color=#ff0000>Cache-Control:post-check</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>0</FONT></SPAN><SPAN>,</SPAN><SPAN class=attribute><FONT color=#ff0000>pre-check</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>0</FONT></SPAN><SPAN>",false);  </SPAN></SPAN><LI class=""><SPAN>header("Pragma:no-cache");  </SPAN><LI class=alt><SPAN>header("Content-Type:text/html;</SPAN><SPAN class=attribute><FONT color=#ff0000>charset</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>UTF</FONT></SPAN><SPAN>-8");  </SPAN></SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>unique_id</FONT></SPAN><SPAN>=$_GET['sessid'];  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>uploadvalues</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>uploadprogress_get_info</FONT></SPAN><SPAN>($unique_id);  </SPAN></SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>if(is_array($uploadvalues)){  </SPAN><LI class=alt><SPAN>echojson_encode($uploadvalues);  </SPAN><LI class=""><SPAN>}else{  </SPAN><LI class=alt><SPAN>//读取进度失败，另外处理逻辑  </SPAN><LI class=""><SPAN>}  </SPAN><LI class=alt><SPAN> </SPAN><LI class=""><SPAN>}else{  </SPAN><LI class=alt><SPAN>//显示上传表单  </SPAN><LI class=""><SPAN>}  </SPAN></LI></OL>