/**
* 验证上传文件的类型是否为图片及大小是否越界
*
* @param
* $file
* @param int $max_file_size
*
* @return bool string
*/
public static function validateUpload($file, $max_file_size = 0)
{
if ((int) $max_file_size > 0 && $file['size'] > (int) $max_file_size) {
return sprintf(Util_Tools::displayError('Image is too large (%1$d kB). Maximum allowed: %2$d kB'), $file['size'] / 1024, $max_file_size / 1024);
}
if (!self::isRealImage($file['tmp_name'], $file['type']) || !self::isCorrectImageFileExt($file['name'])) {
return 'Image format not recognized, allowed formats are: .gif, .jpg, .png';
}
if ($file['error']) {
return sprintf(Util_Tools::displayError('Error while uploading image; please change your server\'s settings. (Error code: %s)'), $file['error']);
}
return true;
}
function download($remote_path, $file, $replace = true, $mode = 'auto')
{
if ($this->is_connected && !empty($remote_path)) {
if ($mode == 'auto') {
$mode = $this->_settype(Util_Tools::getFileExtension($remote_path));
}
$mode = $mode == 'ascii' ? FTP_ASCII : FTP_BINARY;
if (file_exists($file) && $replace) {
unlink($file);
}
if (@ftp_get($this->conn, $file, $remote_path, $mode)) {
return true;
} else {
if ($this->debug) {
die(Util_Tools::displayError('FTP获取文件失败:' . $remote_path . ':' . $file));
}
}
} else {
if ($this->debug) {
die(Util_Tools::displayError('FTP未连接或目录为空:' . $remote_path));
}
}
return false;
}
