<?php
/**
* 图片上传驱动
* @author Devil
* @version 1.0.0
*/
class ImageLibrary
{
private $i_path;
private $i_type;
private $i_is_new_name;
private $i_quality;
private $i_data;
/**
* [__construct 构造方法]
* @param [array] $parameters [参数列表]
*/
private function __construct($parameters)
{
/* 检测是否支持gd */
$this->IsGD();
/* 图片类型 */
$this->i_type = empty($parameters['type']) ? $this->GetImageType() : $parameters['type'];
/* 图片名称是否使用新名称, 则使用原图片名称 */
$this->i_is_new_name = (isset($parameters['is_new_name']) && is_bool($parameters['is_new_name'])) ? $parameters['is_new_name'] : true;
/* jpg图片的质量值, 值越大质量越好 */
$this->i_quality = max(75, isset($parameters['quality']) ? intval($parameters['quality']) : 75);
}
/**
* [Instance 静态方法实例化本类]
* @return [object] [实例对象]
*/
public static function Instance($parameters = array())
{
static $object = null;
if(!is_object($object)) $object = new self($parameters);
return $object;
}
/**
* [SetParameters 参数设置]
* @param [array] $parameters [参数列表]
*/
public function SetParameters($parameters = array())
{
if(empty($parameters)) return;
$this->__construct($parameters);
}
/**
* [Is_GD 检查是否支持gd库]
*/
private function IsGD()
{
if(!isset(gd_info()['GD Version']) || empty(gd_info()['GD Version'])) Api_Return(L('code_412'), 412);
}
/**
* [GetImageType 获取图片后缀类型]
* @return [array] [图片后缀类型]
*/
private function GetImageType()
{
return array(
'gif' => 'image/gif',
'png' => 'image/png',
'jpg' => 'image/jpeg',
'bmp' => 'image/bmp'
);
}
/**
* [Initialization 基本信息初始化]
* @param [array] $data [临时图片数据]
* @param [string] $path [图片保存路径]
* @return [boolean] [true或false]
*/
private function Initialization($data, $path)
{
if(empty($data)) return false;
/* 图片保存地址 */
$path .= (substr($path, -1) == '/') ? '' : '/';
$this->i_path = empty($path) ? '/tmp/image' : $path;
/* 设置存储路径是否存在 */
if(!is_dir($this->i_path)) @mkdir($this->i_path, 0777, true);
if(!@opendir($this->i_path)) exit('dir not access');
/* 初始化返回数据 */
$this->i_data = array();
return true;
}
/**
* [GetNewFileName 获取随机名称]
* @return [string] [新的名称]
*/
private function GetNewFileName()
{
return date('YmdHis').str_shuffle(rand());
}
/**
* [SaveBaseImages base64图片存储]
* @param [array] $data [需要存储的base数据, 一维数组]
* @param [string] $path [存储路径]
* @return [array] [返回图片地址, 一维数组]
*/
public function SaveBaseImages($data, $path)
{
if(!$this->Initialization($data, $path)) return null;
for($i=0; $i<count($data); $i++)
{
if(empty($data[$i])) continue;
$temp_img = str_replace(array("\n", '\n', ' '), '', $data[$i]);
$img_info = @getimagesize('data://application/octet-stream;base64,'.$temp_img);
if(empty($img_info['mime'])) continue;
$type = $this->Is_ImageType($img_info['mime']);
if($type == 'no') continue;
$file_name = $this->GetNewFileName().'.'.$type;
if(file_put_contents($this->i_path.$file_name, base64_decode($temp_img)) !== false) $this->i_data[] = $file_name;
}
return $this->i_data;
}
/**
* [SaveBinaryImages 二进制图片保存]
* @param [array] $data [二进制图片数据, 一维数组]
* @param [string] $path [存储路径]
* @return [array] [返回图片地址, 一维数组]
*/
public function SaveBinaryImages($data, $path)
{
if(!$this->Initialization($data, $path)) return null;
for($i=0; $i<count($data); $i++)
{
if(empty($data[$i])) continue;
$img_info = getimagesizefromstring($data[$i]);
if(empty($img_info['mime'])) continue;
$type = $this->Is_ImageType($img_info['mime']);
if($type == 'no') continue;
$file_name = $this->GetNewFileName().'.'.$type;
if(file_put_contents($this->i_path.$file_name, $data) !== false) $this->i_data[] = $file_name;
}
return $this->i_data;
}
/**
* [GetOriginal 获取临时图片文件的原图]
* @param [array] $data [临时图片数据]
* @param [string] $path [存储路径]
* @return [string] [返回图片地址]
*/
public function GetOriginal($data, $path)
{
if(!$this->Initialization($data, $path)) return '';
if(empty($data['tmp_name'])) return '';
$type = $this->Is_ImageType($data['type']);
if($type == 'no') return '';
$file_name = $this->GetNewFileName().'.'.$type;
if(move_uploaded_file($data['tmp_name'], $this->i_path.$file_name)) return $file_name;
return '';
}
/**
* [GetBinaryCompress 获取指定图片路径的压缩图]
* @param [string] $file [图片地址]
* @param [string] $path [存储路径]
* @param [int] $width [设定图片宽度]
* @param [int] $height[指定图片高度, 不指定则高度按照比例自动计算]
* @return [string] [返回图片地址]
*/
public function GetBinaryCompress($file, $path, $width = 0, $height = 0)
{
if(!$this->Initialization($file, $path) || is_array($file) || !file_exists($file)) return '';
$img_info = pathinfo($file);
if(empty($img_info['basename'])) return '';
$type = $this->Is_ImageType($img_info['extension']);
if($type == 'no') return '';
$file_name = ($this->i_is_new_name) ? $this->GetNewFileName().'.'.$type : $img_info['basename'];
if($this->ImageCompress($width, $height, $file, $type, $this->i_path.$file_name)) return $file_name;
return '';
}
/**
* [GetCompress 获取临时图片文件的压缩图]
* @param [array] $data [临时图片数据]
* @param [string] $path [存储路径]
* @param [int] $width [设定图片宽度]
* @param [int] $height[指定图片高度, 不指定则高度按照比例自动计算]
* @return [atring|空字符串] [返回图片存储的名称]
*/
public function GetCompress($data, $path, $width = 0, $height = 0)
{
if(!$this->Initialization($data, $path)) return '';
if(empty($data['tmp_name'])) return '';
$type = $this->Is_ImageType($data['type']);
if($type == 'no') return '';
$file_name = $this->GetNewFileName().'.'.$type;
if($this->ImageCompress($width, $height, $data['tmp_name'], $type, $this->i_path.$file_name)) return $file_name;
return '';
}
/**
* [GetCompressCut 临时图像裁剪]
* @param [array] $data [图像临时数据]
* @param [string] $path [图像存储地址]
* @param [int] $width [指定存储宽度]
* @param [ing] $height [指定存储高度]
* @param [ing] $src_x [裁剪x坐标]
* @param [ing] $src_y [裁剪y坐标]
* @param [ing] $src_width [裁剪区域宽度]
* @param [ing] $src_height [裁剪区域高度]
* @return [atring|空字符串] [返回图片存储的名称]
*/
function GetCompressCut($data, $path, $width = 0, $height = 0, $src_x = 0, $src_y = 0, $src_width = 0, $src_height = 0)
{
if(!$this->Initialization($data, $path)) return '';
if(empty($data['tmp_name'])) return '';
$type = $this->Is_ImageType($data['type']);
if($type == 'no') return '';
$file_name = $this->GetNewFileName().'.'.$type;
if($this->ImageCompress($width, $height, $data['tmp_name'], $type, $this->i_path.$file_name, $src_x, $src_y, $src_width, $src_height)) return $file_name;
return '';
}
/**
* [ImageCompress 图片压缩]
* @param [int] $width [指定图片宽度]
* @param [int] $height[指定图片高度]
* @param [string] $file [原图片地址]
* @param [string] $type [类型]
* @param [string] $path [新图片地址]
* @return [boolean] [成功true, 失败false]
*/
private function ImageCompress($width, $height, $file, $type, $path, $src_x = 0, $src_y = 0, $src_width = 0, $src_height = 0)
{
/* 获取图片原本尺寸 */
list($w, $h) = getimagesize($file);
/* 尺寸计算 */
$new_width = ($width > 0 && $w > $width) ? $width : $w;
$new_height = ($width > 0 && $w > $width) ? (round($h/($w/$width))) : $h;
if($width > 0 && $height > 0) $new_width = $width;
if($height > 0) $new_height = $height;
/* url创建一个新图象 */
switch($type)
{
case 'gif':
$src_im = @imagecreatefromgif($file);
break;
case 'png':
$src_im = @imagecreatefrompng($file);
break;
default:
$src_im = @imagecreatefromjpeg($file);
}
if(!$src_im) return;
/* 新建一个真彩色图像 */
$dst_im = imagecreatetruecolor($new_width, $new_height);
/* 是否裁剪图片 */
if($src_width > 0 && $src_height > 0)
{
/* 新建拷贝大小的真彩图像 */
$cpd_im = imagecreatetruecolor($src_width, $src_height);
/* 拷贝图片 */
imagecopy($cpd_im, $src_im, 0, 0, $src_x, $src_y, $src_width, $src_height);
/* 图片缩放 */
$s = imagecopyresampled($dst_im, $cpd_im, 0, 0, 0, 0, $new_width, $new_height, $src_width, $src_height);
} else {
/* 图片缩放 */
$s = imagecopyresampled($dst_im, $src_im, 0, 0, 0, 0, $new_width, $new_height, $w, $h);
}
if($s)
{
switch($type)
{
case 'png':
imagepng($dst_im, $path);
break;
case 'gif':
imagegif($dst_im, $path);
break;
default:
imagejpeg($dst_im, $path, $this->i_quality);
}
}
imagedestroy($dst_im);
imagedestroy($src_im);
return $s;
}
/**
* [Is_ImageType 验证后缀名是否合法]
* @param [string] $image_type [图片后缀类型]
* @return [string] [后缀名或no]
*/
private function Is_ImageType($image_type)
{
if(empty($image_type)) return 'no';
if(array_key_exists($image_type, $this->i_type)) return $image_type;
foreach($this->i_type as $key=>$val)
{
if($val == $image_type) return $key;
}
return 'no';
}
}
?>
