文件上传

Posted 2020-11-06 xc_flying

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文件上传函数  move_uploaded_file()   、  copy().

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上传配置   php.ini 中

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错误信息说明

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关键代码

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function uploadFile($fileInfo,$uploadPath = \'uploads\',$flag=true,$allowExt=array(\'jpeg\',\'jpg\',\'gif\',\'png\'),$maxSize = 2097152){
	// 判断错误号
	if ($fileInfo [\'error\'] > 0) {
		switch ($fileInfo [\'error\']) {
			case 1 :
				$mes = \'上传文件超过了PHP配置文件中upload_max_filesize选项的值\';
				break;
			case 2 :
				$mes = \'超过了表单MAX_FILE_SIZE限制的大小\';
				break;
			case 3 :
				$mes = \'文件部分被上传\';
				break;
			case 4 :
				$mes = \'没有选择上传文件\';
				break;
			case 6 :
				$mes = \'没有找到临时目录\';
				break;
			case 7 :
			case 8 :
				$mes = \'系统错误\';
				break;
		}
		echo ( $mes );
		return false;
	}
	$ext = pathinfo ( $fileInfo [\'name\'], PATHINFO_EXTENSION );
// 	$allowExt = array (
// 			\'jpeg\',
// 			\'jpg\',
// 			\'png\',
// 			\'gif\' 
// 	);
	if(!is_array($allowExt)){
		exit(\'系统错误\');
	}
	// 检测上传文件的类型
	if (! in_array ( $ext, $allowExt )) {
		exit ( \'非法文件类型\' );
	}
	//$maxSize = 2097152; // 2M
	                  // 检测上传文件大小是否符合规范
	if ($fileInfo [\'size\'] > $maxSize) {
		exit ( \'上传文件过大\' );
	}
	//检测图片是否为真实的图片类型
	//$flag=true;	
	if($flag){
		if(!getimagesize($fileInfo[\'tmp_name\'])){
			exit(\'不是真实图片类型\');
		}
	}
	// 检测文件是否是通过HTTP POST方式上传上来
	if (! is_uploaded_file ( $fileInfo [\'tmp_name\'] )) {
		exit ( \'文件不是通过HTTP POST方式上传上来的\' );
	}
	//$uploadPath = \'uploads\';
	if (! file_exists ( $uploadPath )) {
		mkdir ( $uploadPath, 0777, true );
		chmod ( $uploadPath, 0777 );
	}
	$uniName = md5 ( uniqid ( microtime ( true ), true ) ) . \'.\' . $ext;
	$destination = $uploadPath . \'/\' . $uniName;
	if (! @move_uploaded_file ( $fileInfo [\'tmp_name\'], $destination )) {
		exit ( \'文件移动失败\' );
	}
	
	//echo \'文件上传成功\';
// 	return array(
// 		\'newName\'=>$destination,
// 		\'size\'=>$fileInfo[\'size\'],
// 		\'type\'=>$fileInfo[\'type\']
// 	);
	return $destination;
}

　　

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文件下载

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$filename=$_GET[\'filename\'];
header(\'content-disposition:attachment;filename=\'.basename($filename));
header(\'content-length:\'.filesize($filename));
readfile($filename);