PHP 文件下传上载

;;;;;;;;;;;;;;;;;;;; Resource Limits ;    <span style="white-space: normal;">资源限制</span>;;;;;;;;;;;;;;;;;;;; Maximum execution time of each script, in seconds; http://php.net/max-execution-time; Note: This directive is hardcoded to 0 for the CLI SAPImax_execution_time = 30     ; Maximum amount of time each script may spend parsing request data. It's a good; idea to limit this time on productions servers in order to eliminate unexpectedly; long running scripts. ; Note: This directive is hardcoded to -1 for the CLI SAPI; Default Value: -1 (Unlimited); Development Value: 60 (60 seconds); Production Value: 60 (60 seconds); http://php.net/max-input-timemax_input_time = 60; Maximum input variable nesting level; http://php.net/max-input-nesting-level;max_input_nesting_level = 64; Maximum amount of memory a script may consume (128MB); http://php.net/memory-limitmemory_limit = 128M

; Maximum size of POST data that PHP will accept.; http://php.net/post-max-sizepost_max_size = 8M 

;;;;;;;;;;;;;;;;; File Uploads ;;;;;;;;;;;;;;;;;; Whether to allow HTTP file uploads.; http://php.net/file-uploadsfile_uploads = On; Temporary directory for HTTP uploaded files (will use system default if not; specified).; http://php.net/upload-tmp-dirupload_tmp_dir = "e:/wamp/tmp"; Maximum allowed size for uploaded files.; http://php.net/upload-max-filesizeupload_max_filesize = 2M

<form action="" method="post" enctype="multipart/form-data">        <input name="filename" type="file"/>        <input type="submit" value="enter"/></form>

<?php	header('Content-Type:text/html;charset=utf-8');	$tmparr=$_FILES['filename'];	if($tmparr['error']==0){		if (is_uploaded_file($tmparr['tmp_name'])) {			if (move_uploaded_file($tmparr['tmp_name'], $tmparr['name'])) {				echo "上传成功";			}else {				echo "<script>alert('文件不合法');history.go(-1);</script>";			}		}else {			echo "<script>alert('非法操作');history.go(-1);</script>";		}	}else {		echo "<script>alert('上传错误，错误类型： ".$tmparr['error']."');history.go(-1);</script>";	}?>