if (preg_match('/^(data:\s*image\/(png|jpg|jpeg);base64,)/', $file, $result)){

官方修复方案：

升级到最新版，或者不能升级的，手动改代码：

public function upload() {

// 创建图片存储文件夹

$dir = dr_upload_temp_path().'member/'.$this->uid.'/';

@dr_dir_delete($dir);

!is_dir($dir) && dr_mkdirs($dir);

if ($_POST['tx']) {

$file = str_replace(' ', '+', $_POST['tx']);

if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $file, $result)){

$new_file = $dir.'0x0.'.$result[2];

if (!in_array(strtolower($result[2]), array('jpg', 'jpeg', 'png', 'gif'))) {

exit(dr_json(0, '目录权限不足'));

}

if (!@file_put_contents($new_file, base64_decode(str_replace($result[1], '', $file)))) {

exit(dr_json(0, '目录权限不足'));

} else {

list($width, $height, $type, $attr) = getimagesize($new_file);

if (!$type) {

@unlink($new_file);

exit(function_exists('iconv') ? iconv('UTF-8', 'GBK', '图片字符串不规范') : 'error3');

}

$this->load->library('image_lib');

$config['create_thumb'] = TRUE;

$config['thumb_marker'] = '';

$config['maintain_ratio'] = FALSE;

$config['source_image'] = $new_file;

foreach (array(30, 45, 90, 180) as $a) {

$config['width'] = $config['height'] = $a;

$config['new_image'] = $dir.$a.'x'.$a.'.'.$result[2];

$this->image_lib->initialize($config);

if (!$this->image_lib->resize()) {

exit(dr_json(0, '上传错误：'.$this->image_lib->display_errors()));

break;

}

}

// ok

$my = SYS_UPLOAD_PATH.'/member/'.$this->uid.'/';

@dr_dir_delete($my);

!is_dir($my) && dr_mkdirs($my);

$c = 0;

if ($fp = @opendir($dir)) {

while (FALSE !== ($file = readdir($fp))) {

$ext = substr(strrchr($file, '.'), 1);

if (in_array(strtolower($ext), array('jpg', 'jpeg', 'png', 'gif'))) {

if (copy($dir.$file, $my.$file)) {

$c++;

}

}

}

closedir($fp);

}

if (!$c) {

exit(dr_json(0,  fc_lang('未找到目录中的图片')));

}

}

} else {

exit(dr_json(0, '图片字符串不规范'));

}

} else {

exit(dr_json(0, '图片不存在'));

}