php文件上传经典代码-PHP源码

php文件上传经典代码

function FileUpload( $resourceType, $currentFolder, $sCommand )
{
if (!isset($_FILES)) {
global $_FILES;
}
$sErrorNumber = '0' ;
$sFileName = '' ;

if ( isset( $_FILES['NewFile'] ) && !is_null( $_FILES['NewFile']['tmp_name'] ) )
{
global $Config ;

$oFile = $_FILES['NewFile'] ;

// Map the virtual path to the local server path.
$sServerDir = ServerMapFolder( $resourceType, $currentFolder, $sCommand ) ;

// Get the uploaded file name.
$sFileName = $oFile['name'] ;
$sFileName = SanitizeFileName( $sFileName ) ;

$sOriginalFileName = $sFileName ;

// Get the extension.
$sExtension = substr( $sFileName, ( strrpos($sFileName, '.') + 1 ) ) ;
$sExtension = strtolower( $sExtension ) ;

if ( isset( $Config['SecureImageUploads'] ) )
{
if ( ( $isImageValid = IsImageValid( $oFile['tmp_name'], $sExtension ) ) === false )
{
$sErrorNumber = '202' ;
}
}

if ( isset( $Config['HtmlExtensions'] ) )
{
if ( !IsHtmlExtension( $sExtension, $Config['HtmlExtensions'] ) &&
( $detectHtml = DetectHtml( $oFile['tmp_name'] ) ) === true )
{
$sErrorNumber = '202' ;
}
}

// Check if it is an allowed extension.
if ( !$sErrorNumber && IsAllowedExt( $sExtension, $resourceType ) )
{
$iCounter = 0 ;

while ( true )
{
$sFilePath = $sServerDir . $sFileName ;

if ( is_file( $sFilePath ) )
{
$iCounter++ ;
$sFileName = RemoveExtension( $sOriginalFileName ) . '(' . $iCounter . ').' . $sExtension ;
$sErrorNumber = '201' ;
}
else
{
move_uploaded_file( $oFile['tmp_name'], $sFilePath ) ;

if ( is_file( $sFilePath ) )
{
if ( isset( $Config['ChmodOnUpload'] ) && !$Config['ChmodOnUpload'] )
{
break ;
}

$permissiOns= 0777;

if ( isset( $Config['ChmodOnUpload'] ) && $Config['ChmodOnUpload'] )
{
$permissiOns= $Config['ChmodOnUpload'] ;
}

$oldumask = umask(0) ;
chmod( $sFilePath, $permissions ) ;
umask( $oldumask ) ;
}

break ;
}
}

if ( file_exists( $sFilePath ) )
{
//previous checks failed, try once again
if ( isset( $isImageValid ) && $isImageValid === -1 && IsImageValid( $sFilePath, $sExtension ) === false )
{
@unlink( $sFilePath ) ;
$sErrorNumber = '202' ;
}
else if ( isset( $detectHtml ) && $detectHtml === -1 && DetectHtml( $sFilePath ) === true )
{
@unlink( $sFilePath ) ;
$sErrorNumber = '202' ;
}
}
}
else
$sErrorNumber = '202' ;
}
else
$sErrorNumber = '202' ;

$sFileUrl = CombinePaths( GetResourceTypePath( $resourceType, $sCommand ) , $currentFolder ) ;
$sFileUrl = CombinePaths( $sFileUrl, $sFileName ) ;

SendUploadResults( $sErrorNumber, $sFileUrl, $sFileName ) ;

exit ;