php 上传文件

upLoad.php

	
<!-- 		<link rel="stylesheet" href="myCss.css" type="text/css" /> -->
	
	<div class="register">
		<form enctype="multipart/form-data" method="post" action="upLoadProcess.php" name="myform">
			<table>
				<tr>
					<td align="center" colspan="2"><font style="font-size:40px;font-family:华文彩云">文件上传</font></td>
				</tr>
				<tr>
					<td>请填写用户名：</td>
					<td><input type="text" name="username"></td>
				</tr>
				<tr>
					<td>请简单介绍该文件</td>
					<td><textarea name="fileintro" rows="10" cols="80"></textarea></td>
				</tr>
				<tr>
					<td colspan="2">请选择要上传的文件：<input type="file" name="myfile">
</td>
				</tr>
				<tr>
					<td align="center" colspan="2"><input type="submit" value="上传文件"></td>
				</tr>
			</table>
		</form>
	</div>

<?php if(isset($_GET[&#39;flag&#39;])){
		$flag = $_GET[&#39;flag&#39;];
		if($flag == 1){
			echo "<br/<br/><font style="'color:red'">文件大小不能超过2M</font>";
		}
	}
?>

upLoadProcess.php

<?php //接收提交文件的信息
	if(isset($_POST[&#39;username&#39;])){
		$username=$_POST[&#39;username&#39;];
	}else{
		echo "上传文件失败";
		exit();
	}
	
	if(isset($_POST[&#39;fileintro&#39;])){
		$fileintro = $_POST[&#39;fileintro&#39;];
	}
	
	$file_size = $_FILES[&#39;myfile&#39;][&#39;size&#39;];
	
	if($file_size > 2*1024*1024){
		echo "<font style="'color:red'">文件过大,不能上传超过2M的文件</font><br>";
		echo "<a href="'upLoad.php'">返回重新上传</a>";
		exit();
	}
	
	$file_type = $_FILES['myfile']['type'];
	
	if($file_type != "image/jpg" && $file_type != "image/pjpeg"){
		echo "文件类型只能是jpg的";
		exit();
	}
	
// 	echo "<pre class="brush:php;toolbar:false">";
// 	print_r($_FILES);
// 	echo "

"; if(is_uploaded_file($_FILES['myfile']['tmp_name'])){ //把文件转存到你希望的目录; $upLoaded_file = $_FILES['myfile']['tmp_name']; $fileName = $_FILES['myfile']['name']; //给每个用户动态的创建一个文件夹 $user_path = $_SERVER['DOCUMENT_ROOT']."/fileOpt/upLoadFiles/".$username; if(!file_exists($user_path)){ mkdir($user_path); } //$destPath = $user_path."/".$fileName; $destPath = $user_path."/".(time().rand(0,1000)).substr($fileName,strrpos($fileName, ".")); //如果目标文件存在，则被覆盖 if(move_uploaded_file($upLoaded_file,$destPath)){ echo $_FILES['myfile']['name']." 上传成功！"; }else{ echo "上传失败！
"; echo "返回重新上传"; } }else{ echo "上传失败！
"; echo "返回重新上传"; } ?>

以上就介绍了php 上传文件，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。