Heim >Backend-Entwicklung >PHP-Tutorial >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:
<ol class="dp-xml"> <li class="alt"><span><span>if($_SERVER['REQUEST_METHOD']=='POST'){//上传请求 </span></span></li> <li class=""> <span>$</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_'.$_POST['APC_UPLOAD_PROGRESS']); </span> </li> <li class="alt"><span>$status['done']=1; </span></li> <li class=""><span>echojson_encode($status);//输出给用户端页面里的ajax调用,相关文档请自己寻找 </span></li> <li class="alt"><span>exit; </span></li> <li class=""><span>}elseif(isset($_GET['progress_key'])){//读取上传进度 </span></li> <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> </li> <li class=""><span>echojson_encode($status); </span></li> <li class="alt"><span>exit; </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>//其他代码,比如上传表单等 </span></li> <li class=""><span>} </span></li> </ol>
PHP上传文件进度之uploadprogress模块实现方法:
使用PECL模块安装方法安装该模块php.ini里面设置uploadprogress.file.filename_template=“/tmp/upd_%s.txt”代码范例:
<ol class="dp-xml"> <li class="alt"><span><span>if($_SERVER['REQUEST_METHOD']=='POST'){ </span></span></li> <li class=""><span>if(is_uploaded_file($_FILES['upfile']['tmp_name'])){ </span></li> <li class="alt"> <span>$</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> </li> <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> </li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">sessid</font></span><span>=$_POST['UPLOAD_IDENTIFIER']; </span> </li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">tmpfile</font></span><span>=$upload_dir.$sessid; </span> </li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">sessfile</font></span><span>=$upload_dir.$sessid.$ext; </span> </li> <li class=""><span>if(move_uploaded_file($_FILES['upfile']['tmp_name'],$tmpfile)){ </span></li> <li class="alt"><span>//上传成功 </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>//上传失败 </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>//上传错误 </span></li> <li class=""><span> </span></li> <li class="alt"><span>}elseif(!empty($_GET['sessid'])){ </span></li> <li class=""><span>header("Expires:Mon,26Jul199705:00:00GMT"); </span></li> <li class="alt"><span>header("Last-Modified:".gmdate("D,dMYH:i:s")."GMT"); </span></li> <li class=""><span>header("Cache-Control:no-store,no-cache,must-revalidate"); </span></li> <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> </li> <li class=""><span>header("Pragma:no-cache"); </span></li> <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> </li> <li class=""><span> </span></li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">unique_id</font></span><span>=$_GET['sessid']; </span> </li> <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> </li> <li class="alt"><span> </span></li> <li class=""><span>if(is_array($uploadvalues)){ </span></li> <li class="alt"><span>echojson_encode($uploadvalues); </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>//读取进度失败,另外处理逻辑 </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>//显示上传表单 </span></li> <li class=""><span>} </span></li> </ol>