与大家分享一个PHP一次批量上传多个文件的实例，例子初设有5个文件选择域，当然觉得不够用，你可以自己添加，这里仅向你演示一种多文件上传的方法。实现本功能只需一个文件，请按注释中的文件名保存该代码为PHP文件，这里的上传是通过copy的方法上传，在PHP中运行的效果图如下示：
<?
//文件名:upload.php
if($ifupload)
{
$path=AddSlashes(dirname($PATH_TRANSLATED))."\\upload\\";
for($i=1;$i<=8;$i++)
{
$files="afile".$i;
if(${$files}!="none")
{
if(copy(${$files},$path.${$files."_name"}))
{
}
}
}
print "<b>文件上传成功！</b><br>";
print "<a href=\"upload.php\">Return</a>";
exit;
}
?>
<html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>多个文件上传</title>
<style type="text/css">
<!--
BODY{
PADDING-RIGHT: 0px;
MARGIN-TOP: 0px;
PADDING-LEFT: 0px;
FONT-SIZE: 8px;
MARGIN-LEFT: 0px;
CURSOR: default;
COLOR: black;
MARGIN-RIGHT: 0px;
PADDING-TOP: 0px;
FONT-FAMILY: Arial;
BACKGROUND-COLOR: transparent;
TEXT-ALIGN: center
}
.TxtInput{
FONT-SIZE: 8pt;
WIDTH: 100%;
CURSOR: default;
COLOR: black;
FONT-FAMILY: Arial;
HEIGHT: 21px;
BACKGROUND-COLOR: white;
TEXT-ALIGN: left
}
.FieldLabel{
FONT-WEIGHT: normal;
FONT-SIZE: 9pt;
WIDTH: 100%;
COLOR: black;
FONT-FAMILY: Arial;
BACKGROUND-COLOR: transparent;
TEXT-ALIGN: left
}
.HeadBtn{
BORDER-RIGHT: black 1px solid;
BORDER-TOP: white 1px solid;
FONT-SIZE: 8pt;
OVERFLOW: hidden;
BORDER-LEFT: white 1px solid;
WIDTH: 70px;
COLOR: black;
BORDER-BOTTOM: black 1px solid;
FONT-FAMILY: Arial;
HEIGHT: 21px;
BACKGROUND-COLOR: #8e8dcd;
TEXT-ALIGN: center
}
.TransEx{
BORDER-RIGHT: black 1px solid;
PADDING-RIGHT: 8px;
BORDER-TOP: white 1px solid;
PADDING-LEFT: 8px;
FONT-SIZE: 8pt;
PADDING-BOTTOM: 3px;
BORDER-LEFT: white 1px solid;
WIDTH: 720px;
PADDING-TOP: 3px;
BORDER-BOTTOM: black 1px solid;
FONT-FAMILY: Arial;
BACKGROUND-COLOR: #c0c0c0;
TEXT-ALIGN: center
}
-->
</style>
<script language="javascript">
function window.onload()
{
document.forms[0].btnOk.onclick=btn_ok;
}
function btn_ok()
{
for(var i=1;i<=8;i++)
{
if(eval("document.forms[0].afile"+i+".value!=''"))
document.forms[0].submit();
return true;
}
alert("None of file have been selected");
return false;
}
</script>
</head>
<body>
<form method="post" action="multi_upload.php" name="frmUpload" enctype="multipart/form-data" >
<table id="divContainer" style="HEIGHT: 100%; WIDTH: 380" border="0">
<tr height="35"><td align="right" valign="bottom">PHP多文件上传 </td></tr>
<tr><td align="center" valign="top">
<table class="Transex" border="0" cellspacing="0" cellpadding="0" style="WIDTH: 360px">
<tr style="HEIGHT: 10px" >
<td style="WIDTH: 5px"></td>
<td colspan="2"></td>
<td style="WIDTH: 5px"></td>
</tr>
<tr>
<td></td>
<td nowrap><label class="FieldLabel"> 文件1</label></td>
<td><input type="file" class="TxtInput" tabindex="1" name="afile1" style="WIDTH: 282px"></td>
<td></td>
</tr>
<tr>
<td></td>
<td nowrap><label class="FieldLabel"> 文件2</label></td>
<td><input type="file" class="TxtInput" tabindex="2" name="afile2" style="WIDTH: 282px"></td>
<td></td>
</tr>
<tr>
<td></td>
<td nowrap><label class="FieldLabel"> 文件3</label></td>
<td><input type="file" class="TxtInput" tabindex="3" name="afile3" style="WIDTH: 282px"></td>
<td></td>
</tr>
<tr>
<td></td>
<td nowrap><label class="FieldLabel"> 文件4</label></td>
<td><input type="file" class="TxtInput" tabindex="4" name="afile4" style="WIDTH: 282px"></td>
<td></td>
</tr>
<tr>
<td></td>
<td nowrap><label class="FieldLabel"> 文件5</label></td>
<td><input type="file" class="TxtInput" tabindex="5" name="afile5" style="WIDTH: 282px"></td>
<td></td>
</tr>
<tr style="HEIGHT: 5px">
<td style="WIDTH: 5px">
<td style="WIDTH: 350px" colspan="2"><hr width="100%"></td>
<td style="WIDTH: 5px"></td>
</tr>
<tr>
<td></td>
<td colspan="2" align="left">
<button tabindex="5" class="headbtn" align="center" name="btnOk" id="btnOk" accesskey="O">确定(<ins>O</ins>)</button>
<input type="hidden" name="ifupload" value=1>
<button tabindex="5" class="headbtn" align="center" name="btnCancel" id="btnCancel" accesskey="C" onclick="window.close();">取消(<ins>C</ins>)</button></td>
<td></td>
</tr>
<tr style="HEIGHT: 5px">
<td style="WIDTH: 5px">
<td style="WIDTH: 350px" colspan="2"></td>
<td style="WIDTH: 5px"></td>
</tr>
</table>
</td>
</tr>
</table>
</form>
</body>
</html>