discuz x1.5

打开\source\function\function_group.php

	if($data['status'] == 3) {
		$imgwh = array('icon' => array('48', '48'), 'banner' => array('720', '168'));
		require_once libfile('class/image');
		$img = new image;
		$img->Thumb($upload->attach['target'], './'.$uploadtype.'/'.$upload->attach['attachment'], $imgwh[$type][0], $imgwh[$type][1], 'fixwr');
	}
	return $upload->attach['attachment'];
}

可增加一个字段：

	if($data['status'] == 3) {
		$imgwh = array('icon' => array('48', '48'), 'banner' => array('720', '168'), 'hkshadow' => array('91', '91'));
		require_once libfile('class/image');
		$img = new image;
		$img->Thumb($upload->attach['target'], './'.$uploadtype.'/'.$upload->attach['attachment'], $imgwh[$type][0], $imgwh[$type][1], 'fixwr');
	}
	return $upload->attach['attachment'];
}

然后打开\source\module\forum\forum_group.php

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