ImgURL是一个简单、纯粹的图床程序,让个人图床多一个选择。
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<?php
/* 图片处理类 */
defined('BASEPATH') OR exit('No direct script access allowed');
class Image{
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protected $CI;
//构造函数
public function __construct(){
//附属类,让其可以访问CI的资源
$this->CI = & get_instance();
}
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public function thumbnail($source,$width,$height){
//获取缩略图名称
$source = str_replace("\\","/",$source);
$imgarr = explode("/",$source);
//获取图片信息
$imginfo = getimagesize($source);
//图片宽
$img_w = $imginfo[0];
//图片高
$img_h = $imginfo[1];
//获取源文件名
$filename = end($imgarr);
$imgname = explode(".",$filename);
//缩略图名称
$thumbnail_name = $imgname[0].'_thumb'.'.'.$imgname[1];
//获取文件路径
$dirname = dirname($source); //获取的路径最后没有/
//缩略图完整路径
$thumbnail_full = $dirname.'/'.$thumbnail_name;
// 创建缩略图
//原图宽高大于缩略图
if(($img_w > $width) || ($img_h > $height)){
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//检测是否支持ImageMagick
if($this->check()){
//使用ImageMagick裁剪图像
$image = new Imagick($source);
$image->cropThumbnailImage( $width, $height );
//将缩略图输出到文件
$image->writeImage( $thumbnail_full );
//清理工作
$image->clear();
}
//不支持ImageMagick,使用GD2进行裁剪
else{
//配置裁剪参数,参考:https://codeigniter.org.cn/user_guide/libraries/image_lib.html
$config['image_library'] = 'gd2';
$config['source_image'] = $source;
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = $width;
$config['height'] = $height;
$this->CI->load->library('image_lib', $config);
$this->CI->image_lib->resize();
}
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}
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}
//检测是否支持ImageMagick
protected function check(){
$ext = get_loaded_extensions();
//如果已经安装ImageMagick
if(array_search('imagick',$ext)){
return TRUE;
}
else{
return FALSE;
}
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}
//压缩图片
public function compress($source){
}
}
?>