function get_avatar($uid, $size = 48)
{
$size = in_array($size, array('160', '100', '48')) ? $size : '48';
$path = config_item('site_attach_dir') . DIRECTORY_SEPARATOR . 'avatar' . DIRECTORY_SEPARATOR;
$avatar = build_dir($uid) . $uid . '_' . $size . '.png';
if (@is_file(FCPATH . $path . $avatar) === true) {
return base_url($path . $avatar);
} else {
return base_url($path . build_dir(0) . '0_' . $size . '.png');
}
}
/**
* 从硬盘删除文章头图
*
* @access public
* @params int $aid 文章ID
* @return NULL
*/
public function unlink_article_image($aid)
{
$aid = (int) $aid;
$size = array(160, 48);
$path = config_item('site_attach_dir') . DIRECTORY_SEPARATOR . 'article' . DIRECTORY_SEPARATOR;
foreach ($size as $v) {
$image = FCPATH . $path . build_dir($aid) . $aid . '_' . $v . '.png';
if (@is_file($image) === true) {
@chmod($image, 0777);
@unlink($image);
}
}
}
public function crop_image_action()
{
$x = (int) $this->input->get('x');
$y = (int) $this->input->get('y');
$w = (int) $this->input->get('w');
$h = (int) $this->input->get('h');
if ($w < 100 or $h < 100) {
JSON('error', '请选择一个合适的图像区域！');
}
$hid = (int) $this->input->get('hid');
$imagepath = $this->input->get('path', true);
$imagepath = FCPATH . str_replace(base_url(), '', $imagepath);
if (empty($imagepath) or @is_file($imagepath) === false) {
JSON('error', '找不到需要裁切的图片！');
}
$imageinfo = pathinfo($imagepath);
switch ($imageinfo['extension']) {
case 'jpg':
case 'jpeg':
$image = imagecreatefromjpeg($imagepath);
break;
case 'png':
$image = imagecreatefrompng($imagepath);
break;
case 'gif':
$image = imagecreatefromgif($imagepath);
break;
default:
JSON('error', '您上传的文件格式不正确！');
}
$copy = $this->_image_crop($image, $x, $y, $w, $h);
if ($copy === false) {
JSON('error', '未知错误，请重试！');
}
$temppath = FCPATH . $this->_attach_dir . 'huangye' . DIRECTORY_SEPARATOR . build_dir($hid);
if (@is_dir($temppath) === false) {
create_dir($temppath);
}
if (@is_writable($temppath) === false) {
@chmod($temppath, 0777);
}
$savepath = $temppath . $hid . '.png';
imagepng($copy, $savepath);
imagedestroy($copy);
$this->load->library('image_lib');
list($width, $height, $type, $attr) = getimagesize($savepath);
$array = array(array('w' => 100, 'h' => 100), array('w' => 50, 'h' => 50));
foreach ($array as $size) {
if ($width > $size['w'] or $height > $size['h']) {
$setwidth = $size['w'];
$setheight = $size['h'];
} else {
$setwidth = $width;
$setheight = $height;
}
$config['source_image'] = $savepath;
$config['new_image'] = $hid . '_h' . $size['w'] . '.png';
$config['height'] = $setheight;
$config['width'] = $setwidth;
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
$show_img = 'http://weinan.fun-x.cn/attach/huangye/00/01/' . $hid . '_h100.png';
$data_img = array('img_url' => $show_img);
$this->db->where('hid', $hid);
$this->db->update('huangye', $data_img);
unlink($imagepath);
unlink($savepath);
JSON('success', '头图已保存成功！', $show_img);
}