图片压缩代码,PHP代码库,德仔网

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【PHP】图片压缩
作者:淋 / 发布于2015/4/14/ 1043

	<?php

	class ThumbHandler

	{

	 var $dst_img;// 目标文件

	 var $h_src; // 图片资源句柄

	 var $h_dst;// 新图句柄

	 var $h_mask;// 水印句柄

	 var $img_create_quality = 100;// 图片生成质量

	 var $img_display_quality = 80;// 图片显示质量,默认为75

	 var $img_scale = 0;// 图片缩放比例

	 var $src_w = 0;// 原图宽度

	 var $src_h = 0;// 原图高度

	 var $dst_w = 0;// 新图总宽度

	 var $dst_h = 0;// 新图总高度

	 var $fill_w;// 填充图形宽

	 var $fill_h;// 填充图形高

	 var $copy_w;// 拷贝图形宽

	 var $copy_h;// 拷贝图形高

	 var $src_x = 0;// 原图绘制起始横坐标

	 var $src_y = 0;// 原图绘制起始纵坐标

	 var $start_x;// 新图绘制起始横坐标

	 var $start_y;// 新图绘制起始纵坐标

	 var $mask_word;// 水印文字

	 var $mask_img;// 水印图片

	 var $mask_pos_x = 0;// 水印横坐标

	 var $mask_pos_y = 0;// 水印纵坐标

	 var $mask_offset_x = 5;// 水印横向偏移

	 var $mask_offset_y = 5;// 水印纵向偏移

	 var $font_w;// 水印字体宽

	 var $font_h;// 水印字体高

	 var $mask_w;// 水印宽

	 var $mask_h;// 水印高

	 var $mask_font_color = "#ffffff";// 水印文字颜色

	 var $mask_font = 2;// 水印字体

	 var $font_size;// 尺寸

	 var $mask_position = 0;// 水印位置

	 var $mask_img_pct = 50;// 图片合并程度,值越大，合并程序越低

	 var $mask_txt_pct = 50;// 文字合并程度,值越小，合并程序越低

	 var $img_border_size = 0;// 图片边框尺寸

	 var $img_border_color;// 图片边框颜色

	 var $_flip_x=0;// 水平翻转次数

	 var $_flip_y=0;// 垂直翻转次数

	 var $cut_type=0;// 剪切类型

	

	 var $img_type;// 文件类型

	

	 // 文件类型定义,并指出了输出图片的函数

	 var $all_type = array(

	 "jpg" => array("output"=>"imagejpeg"),

	 "gif" => array("output"=>"imagegif"),

	 "png" => array("output"=>"imagepng"),

	 "wbmp" => array("output"=>"image2wbmp"),

	 "jpeg" => array("output"=>"imagejpeg"));

	

	 /**

	 * 构造函数

	 */

	 function ThumbHandler()

	 {

	 $this->mask_font_color = "#ffffff";

	 $this->font = 2;

	 $this->font_size = 12;

	 }

	

	 /**

	 * 取得图片的宽

	 */

	 function getImgWidth($src)

	 {

	 return imagesx($src);

	 }

	

	 /**

	 * 取得图片的高

	 */

	 function getImgHeight($src)

	 {

	 return imagesy($src);

	 }

	

	 /**

	 * 设置图片生成路径

	 *

	 * @param string $src_img 图片生成路径

	 */

	 function setSrcImg($src_img, $img_type=null)

	 {

	 if(!file_exists($src_img))

	 {

	 die("图片不存在");

	 }

	

	 if(!empty($img_type))

	 {

	 $this->img_type = $img_type;

	 }

	 else

	 {

	 $this->img_type = $this->_getImgType($src_img);

	 }

	

	 $this->_checkValid($this->img_type);

	 // file_get_contents函数要求php版本>4.3.0

	 $src = '';

	 if(function_exists("file_get_contents"))

	 {

	 $src = file_get_contents($src_img);

	 }

	 else

	 {

	 $handle = fopen ($src_img, "r");

	 while (!feof ($handle))

	 {

	 $src .= fgets($fd, 4096);

	

	 }

	 fclose ($handle);

	 }

	 if(empty($src))

	 {

	 die("图片源为空");

	 }

	 $this->h_src = @ImageCreateFromString($src);

	 $this->src_w = $this->getImgWidth($this->h_src);

	 $this->src_h = $this->getImgHeight($this->h_src);

	 }

	

	 /**

	 * 设置图片生成路径

	 *

	 * @param string $dst_img 图片生成路径

	 */

	 function setDstImg($dst_img)

	 {

	 $arr = explode('/',$dst_img);

	 $last = array_pop($arr);

	 $path = implode('/',$arr);

	 $this->_mkdirs($path);

	 $this->dst_img = $dst_img;

	 }

	

	 /**

	 * 设置图片的显示质量

	 *

	 * @param string $n 质量

	 */

	 function setImgDisplayQuality($n)

	 {

	 $this->img_display_quality = (int)$n;

	 }

	

	 /**

	 * 设置图片的生成质量

	 *

	 * @param string $n 质量

	 */

	 function setImgCreateQuality($n)

	 {

	 $this->img_create_quality = (int)$n;

	 }

	

	 /**

	 * 设置文字水印

	 *

	 * @param string $word 水印文字

	 * @param integer $font 水印字体

	 * @param string $color 水印字体颜色

	 */

	 function setMaskWord($word)

	 {

	 $this->mask_word .= $word;

	 }

	

	 /**

	 * 设置字体颜色

	 *

	 * @param string $color 字体颜色

	 */

	 function setMaskFontColor($color="#ffffff")

	 {

	 $this->mask_font_color = $color;

	 }

	

	 /**

	 * 设置水印字体

	 *

	 * @param string|integer $font 字体

	 */

	 function setMaskFont($font=2)

	 {

	 if(!is_numeric($font) && !file_exists($font))

	 {

	 die("字体文件不存在");

	 }

	 $this->font = $font;

	 }

	

	 /**

	 * 设置文字字体大小,仅对truetype字体有效

	 */

	 function setMaskFontSize($size = "12")

	 {

	 $this->font_size = $size;

	 }

	

	 /**

	 * 设置图片水印

	 *

	 * @param string $img 水印图片源

	 */

	 function setMaskImg($img)

	 {

	 $this->mask_img = $img;

	 }

	

	 /**

	 * 设置水印横向偏移

	 *

	 * @param integer $x 横向偏移量

	 */

	 function setMaskOffsetX($x)

	 {

	 $this->mask_offset_x = (int)$x;

	 }

	

	 /**

	 * 设置水印纵向偏移

	 *

	 * @param integer $y 纵向偏移量

	 */

	 function setMaskOffsetY($y)

	 {

	 $this->mask_offset_y = (int)$y;

	 }

	

	 /**

	 * 指定水印位置

	 *

	 * @param integer $position 位置,1:左上,2:左下,3:右上,0/4:右下

	 */

	 function setMaskPosition($position=0)

	 {

	 $this->mask_position = (int)$position;

	 }

	

	 /**

	 * 设置图片合并程度

	 *

	 * @param integer $n 合并程度

	 */

	 function setMaskImgPct($n)

	 {

	 $this->mask_img_pct = (int)$n;

	 }

	

	 /**

	 * 设置文字合并程度

	 *

	 * @param integer $n 合并程度

	 */

	 function setMaskTxtPct($n)

	 {

	 $this->mask_txt_pct = (int)$n;

	 }

	

	 /**

	 * 设置缩略图边框

	 *

	 * @param (类型) (参数名) (描述)

	 */

	 function setDstImgBorder($size=1, $color="#000000")

	 {

	 $this->img_border_size = (int)$size;

	 $this->img_border_color = $color;

	 }

	 /**

	 * 水平翻转

	 */

	 function flipH()

	 {

	 $this->_flip_x++;

	 }

	 /**

	 * 垂直翻转

	 */

	 function flipV()

	 {

	 $this->_flip_y++;

	 }

	 /**

	 * 设置剪切类型

	 *

	 * @param (类型) (参数名) (描述)

	 */

	 function setCutType($type)

	 {

	 $this->cut_type = (int)$type;

	 }

	 /**

	 * 设置图片剪切

	 *

	 * @param integer $width 矩形剪切

	 */

	 function setRectangleCut($width, $height)

	 {

	 $this->fill_w = (int)$width;

	 $this->fill_h = (int)$height;

	 }

	

	 /**

	 * 设置源图剪切起始坐标点

	 *

	 * @param (类型) (参数名) (描述)

	 */

	 function setSrcCutPosition($x, $y)

	 {

	 $this->src_x = (int)$x;

	 $this->src_y = (int)$y;

	 }

	 /**

	 * 创建图片,主函数

	 * @param integer $a 当缺少第二个参数时，此参数将用作百分比，

	 * 否则作为宽度值

	 * @param integer $b 图片缩放后的高度

	 */

	 function createImg($a, $b=null)

	 {

	 $num = func_num_args();

	 if(1 == $num)

	 {

	 $r = (int)$a;

	 if($r < 1)

	 {

	 die("图片缩放比例不得小于1");

	 }

	 $this->img_scale = $r;

	 $this->_setNewImgSize($r);

	 }

	 if(2 == $num)

	 {

	 $w = (int)$a;

	 $h = (int)$b;

	 if(0 == $w)

	 {

	 die("目标宽度不能为0");

	 }

	 if(0 == $h)

	 {

	 die("目标高度不能为0");

	 }

	 $this->_setNewImgSize($w, $h);

	 }

	

	 if($this->_flip_x%2!=0)

	 {

	 $this->_flipH($this->h_src);

	 }

	 if($this->_flip_y%2!=0)

	 {

	 $this->_flipV($this->h_src);

	 }

	 $this->_createMask();

	 $this->_output();

	

	 // 释放

	 if(imagedestroy($this->h_src) && imagedestroy($this->h_dst))

	 {

	 Return true;

	 }

	 else

	 {

	 Return false;

	 }

	 }

	 /**

	 * 生成水印,调用了生成水印文字和水印图片两个方法

	 */

	 function _createMask()

	 {

	 if($this->mask_word)

	 {

	 // 获取字体信息

	 $this->_setFontInfo();

	 if($this->_isFull())

	 {

	 die("水印文字过大");

	 }

	 else

	 {

	 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);

	 $white = ImageColorAllocate($this->h_dst,255,255,255);

	 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色

	 $this->_drawBorder();

	 imagecopyresampled( $this->h_dst, $this->h_src,

	 $this->start_x, $this->start_y,

	 $this->src_x, $this->src_y,

	 $this->fill_w, $this->fill_h,

	 $this->copy_w, $this->copy_h);

	 $this->_createMaskWord($this->h_dst);

	 }

	 }

	

	 if($this->mask_img)

	 {

	 $this->_loadMaskImg();//加载时，取得宽高

	

	 if($this->_isFull())

	 {

	 // 将水印生成在原图上再拷

	 $this->_createMaskImg($this->h_src);

	 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);

	 $white = ImageColorAllocate($this->h_dst,255,255,255);

	 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色

	 $this->_drawBorder();

	 imagecopyresampled( $this->h_dst, $this->h_src,

	 $this->start_x, $this->start_y,

	 $this->src_x, $this->src_y,

	 $this->fill_w, $this->start_y,

	 $this->copy_w, $this->copy_h);

	 }

	 else

	 {

	 // 创建新图并拷贝

	 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);

	 $white = ImageColorAllocate($this->h_dst,255,255,255);

	 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色

	 $this->_drawBorder();

	 imagecopyresampled( $this->h_dst, $this->h_src,

	 $this->start_x, $this->start_y,

	 $this->src_x, $this->src_y,

	 $this->fill_w, $this->fill_h,

	 $this->copy_w, $this->copy_h);

	 $this->_createMaskImg($this->h_dst);

	 }

	 }

	

	 if(empty($this->mask_word) && empty($this->mask_img))

	 {

	 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);

	 $white = ImageColorAllocate($this->h_dst,255,255,255);

	 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色

	 $this->_drawBorder();

	 imagecopyresampled( $this->h_dst, $this->h_src,

	 $this->start_x, $this->start_y,

	 $this->src_x, $this->src_y,

	
	 $this->fill_w, $this->fill_h,

	 $this->copy_w, $this->copy_h);

	 }

	 }

	

	 /**

	 * 画边框

	 */

	 function _drawBorder()

	 {

	 if(!empty($this->img_border_size))

	 {

	 $c = $this->_parseColor($this->img_border_color);

	 $color = ImageColorAllocate($this->h_src,$c[0], $c[1], $c[2]);

	 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$color);// 填充背景色

	 }

	 }

	 /**

	 * 生成水印文字

	 */

	 function _createMaskWord($src)

	 {

	 $this->_countMaskPos();

	 $this->_checkMaskValid();

	 $c = $this->_parseColor($this->mask_font_color);

	 $color = imagecolorallocatealpha($src, $c[0], $c[1], $c[2], $this->mask_txt_pct);

	

	 if(is_numeric($this->font))

	 {

	 imagestring($src,

	 $this->font,

	 $this->mask_pos_x, $this->mask_pos_y,

	 $this->mask_word,

	 $color);

	 }

	 else

	 {

	 imagettftext($src,

	 $this->font_size, 0,

	 $this->mask_pos_x, $this->mask_pos_y,

	 $color,

	 $this->font,

	 $this->mask_word);

	 }

	 }

	 /**

	 * 生成水印图

	 */

	 function _createMaskImg($src)

	 {

	 $this->_countMaskPos();

	 $this->_checkMaskValid();

	 imagecopymerge($src,

	 $this->h_mask,

	 $this->mask_pos_x ,$this->mask_pos_y,

	 0, 0,

	 $this->mask_w, $this->mask_h,

	 $this->mask_img_pct);

	 imagedestroy($this->h_mask);

	 }

	

	 /**

	 * 加载水印图

	 */

	 function _loadMaskImg()

	 {

	 $mask_type = $this->_getImgType($this->mask_img);

	 $this->_checkValid($mask_type);

	

	 // file_get_contents函数要求php版本>4.3.0

	 $src = '';

	 if(function_exists("file_get_contents"))

	 {

	 $src = file_get_contents($this->mask_img);

	 }

	 else

	 {

	 $handle = fopen ($this->mask_img, "r");

	 while (!feof ($handle))

	 {

	 $src .= fgets($fd, 4096);

	 }

	 fclose ($handle);

	 }

	 if(empty($this->mask_img))

	 {

	 die("水印图片为空");

	 }

	 $this->h_mask = ImageCreateFromString($src);

	 $this->mask_w = $this->getImgWidth($this->h_mask);

	 $this->mask_h = $this->getImgHeight($this->h_mask);

	 }

	

	 /**

	 * 图片输出

	 */

	 function _output()

	 {

	 $img_type = $this->img_type;

	 $func_name = $this->all_type[$img_type]['output'];

	 if(function_exists($func_name))

	 {

	 // 判断浏览器,若是IE就不发送头

	 if(isset($_SERVER['HTTP_USER_AGENT']))

	 {

	 $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);

	 if(!preg_match('/^.*MSIE.*/)$/i',$ua))

	 {

	 header("Content-typeimg_type");

	 }

	 }

	 $func_name($this->h_dst, $this->dst_img, $this->img_display_quality);

	 }

	 else

	 {

	 Return false;

	 }

	 }

	

	 /**

	 * 分析颜色

	 *

	 * @param string $color 十六进制颜色

	 */

	 function _parseColor($color)

	 {

	 $arr = array();

	 for($ii=1; $ii<strlen($color); $ii++)

	 {

	 $arr[] = hexdec(substr($color,$ii,2));

	 $ii++;

	 }

	

	 Return $arr;

	 }

	 /**

	 * 计算出位置坐标

	 */

	 function _countMaskPos()

	 {

	 if($this->_isFull())

	 {

	 switch($this->mask_position)

	 {

	 case 1:

	 // 左上

	 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;

	 $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;

	 break;

	

	 case 2:

	 // 左下

	 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;

	 $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;

	 break;

	

	 case 3:

	 // 右上

	 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;

	 $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;

	 break;

	

	 case 4:

	 // 右下

	 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;

	 $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;

	 break;

	

	 default:

	 // 默认将水印放到右下,偏移指定像素

	 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;

	 $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;

	 break;

	 }

	 }

	 else

	 {

	 switch($this->mask_position)

	 {

	 case 1:

	 // 左上

	 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;

	 $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;

	 break;

	 case 2:

	 // 左下

	 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;

	 $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;

	 break;

	 case 3:

	 // 右上

	 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;

	 $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;

	 break;

	 case 4:

	 // 右下

	 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;

	 $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;

	 break;

	 default:

	 // 默认将水印放到右下,偏移指定像素

	 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;

	 $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;

	 break;

	 }

	 }

	 }

	

	 /**

	 * 设置字体信息

	 */

	 function _setFontInfo()

	 {

	 if(is_numeric($this->font))

	 {

	 $this->font_w = imagefontwidth($this->font);

	 $this->font_h = imagefontheight($this->font);

	

	 // 计算水印字体所占宽高

	 $word_length = strlen($this->mask_word);

	 $this->mask_w = $this->font_w*$word_length;

	 $this->mask_h = $this->font_h;

	 }

	 else

	 {

	 $arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word);

	 $this->mask_w = abs($arr[0] - $arr[2]);

	 $this->mask_h = abs($arr[7] - $arr[1]);

	 }

	 }

	 /**

	 * 设置新图尺寸

	 *

	 * @param integer $img_w 目标宽度

	 * @param integer $img_h 目标高度

	 */

	 function _setNewImgSize($img_w, $img_h=null)

	 {

	 $num = func_num_args();

	 if(1 == $num)

	 {

	 $this->img_scale = $img_w;// 宽度作为比例

	 $this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size*2;

	 $this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size*2;

	

	 // 源文件起始坐标

	 $this->src_x = 0;

	 $this->src_y = 0;

	 $this->copy_w = $this->src_w;

	 $this->copy_h = $this->src_h;

	

	 // 目标尺寸

	 $this->dst_w = $this->fill_w + $this->img_border_size*2;

	 $this->dst_h = $this->fill_h + $this->img_border_size*2;

	 }

	 if(2 == $num)

	 {

	 $fill_w = (int)$img_w - $this->img_border_size*2;

	 $fill_h = (int)$img_h - $this->img_border_size*2;

	 if($fill_w < 0 || $fill_h < 0)

	 {

	 die("图片边框过大，已超过了图片的宽度");

	 }

	 $rate_w = $this->src_w/$fill_w;

	 $rate_h = $this->src_h/$fill_h;

	

	 switch($this->cut_type)

	 {

	 case 0:

	 // 如果原图大于缩略图，产生缩小，否则不缩小

	 if($rate_w < 1 && $rate_h < 1)

	 {

	 $this->fill_w = (int)$this->src_w;

	 $this->fill_h = (int)$this->src_h;

	 }

	 else

	 {

	 if($rate_w >= $rate_h)

	 {

	 $this->fill_w = (int)$fill_w;

	 $this->fill_h = round($this->src_h/$rate_w);

	 }

	 else

	 {

	 $this->fill_w = round($this->src_w/$rate_h);

	 $this->fill_h = (int)$fill_h;

	 }

	 }

	 $this->src_x = 0;

	 $this->src_y = 0;

	

	 $this->copy_w = $this->src_w;

	 $this->copy_h = $this->src_h;

	 // 目标尺寸

	 $this->dst_w = $this->fill_w + $this->img_border_size*2;

	 $this->dst_h = $this->fill_h + $this->img_border_size*2;

	 break;

	

	 // 自动裁切

	 case 1:

	 // 如果图片是缩小剪切才进行操作

	 if($rate_w >= 1 && $rate_h >=1)

	 {

	 if($this->src_w > $this->src_h)

	 {

	 $src_x = round($this->src_w-$this->src_h)/2;

	 $this->setSrcCutPosition($src_x, 0);

	 $this->setRectangleCut($fill_h, $fill_h);

	 $this->copy_w = $this->src_h;

	 $this->copy_h = $this->src_h;

	

	 }

	 elseif($this->src_w < $this->src_h)

	 {

	 $src_y = round($this->src_h-$this->src_w)/2;

	 $this->setSrcCutPosition(0, $src_y);

	 $this->setRectangleCut($fill_w, $fill_h);

	 $this->copy_w = $this->src_w;

	 $this->copy_h = $this->src_w;

	 }

	 else

	 {

	 $this->setSrcCutPosition(0, 0);

	 $this->copy_w = $this->src_w;

	 $this->copy_h = $this->src_w;

	 $this->setRectangleCut($fill_w, $fill_h);

	 }

	 }

	 else

	 {

	 $this->setSrcCutPosition(0, 0);

	 $this->setRectangleCut($this->src_w, $this->src_h);

	 $this->copy_w = $this->src_w;

	 $this->copy_h = $this->src_h;

	 }

	 // 目标尺寸

	 $this->dst_w = $this->fill_w + $this->img_border_size*2;

	 $this->dst_h = $this->fill_h + $this->img_border_size*2;

	

	 break;

	 // 手工裁切

	 case 2:

	 $this->copy_w = $this->fill_w;

	 $this->copy_h = $this->fill_h;

	

	 // 目标尺寸

	 $this->dst_w = $this->fill_w + $this->img_border_size*2;

	 $this->dst_h = $this->fill_h + $this->img_border_size*2;

	

	 break;

	 default:

	 break;

	

	 }

	 }

	 // 目标文件起始坐标

	 $this->start_x = $this->img_border_size;

	 $this->start_y = $this->img_border_size;

	 }

	

	 /**

	 * 检查水印图是否大于生成后的图片宽高

	 */

	 function _isFull()

	 {

	 Return ( $this->mask_w + $this->mask_offset_x > $this->fill_w

	 || $this->mask_h + $this->mask_offset_y > $this->fill_h)

	 ?true:false;

	 }

	

	 /**

	 * 检查水印图是否超过原图

	 */

	 function _checkMaskValid()

	 {

	 if( $this->mask_w + $this->mask_offset_x > $this->src_w

	 || $this->mask_h + $this->mask_offset_y > $this->src_h)

	 {

	 die("水印图片尺寸大于原图，请缩小水印图");

	 }

	 }

	

	 /**

	 * 取得图片类型

	 *

	 * @param string $file_path 文件路径

	 */

	 function _getImgType($file_path)

	 {

	 $type_list = array("1"=>"gif","2"=>"jpg","3"=>"png","4"=>"swf","5" => "psd","6"=>"bmp","15"=>"wbmp");

	 if(file_exists($file_path))

	 {

	 $img_info = @getimagesize ($file_path);

	 if(isset($type_list[$img_info[2]]))

	 {

	 Return $type_list[$img_info[2]];

	 }

	 }

	 else

	 {

	 die("文件不存在,不能取得文件类型!");

	 }

	 }

	

	 /**

	 * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求

	 * php版本大于4.1.0

	 *

	 * @param string $img_type 文件类型

	 */

	 function _checkValid($img_type)

	 {

	 if(!array_key_exists($img_type, $this->all_type))

	 {

	 Return false;

	 }

	 }

	

	 /**

	 * 按指定路径生成目录

	 *

	 * @param string $path 路径

	 */

	 function _mkdirs($path)

	 {

	 $adir = explode('/',$path);

	 $dirlist = '';

	 $rootdir = array_shift($adir);

	 if(($rootdir!='.'||$rootdir!='..')&&!file_exists($rootdir))

	 {

	 @mkdir($rootdir);

	 }

	 foreach($adir as $key=>$val)

	 {

	 if($val!='.'&&$val!='..')

	 {

	 $dirlist .= "/".$val;

	 $dirpath = $rootdir.$dirlist;

	 if(!file_exists($dirpath))

	 {

	 @mkdir($dirpath);

	 @chmod($dirpath,0777);

	 }

	 }

	 }

	 }

	 /**

	 * 垂直翻转

	 *

	 * @param string $src 图片源

	 */

	 function _flipV($src)

	 {

	 $src_x = $this->getImgWidth($src);

	 $src_y = $this->getImgHeight($src);

	 $new_im = imagecreatetruecolor($src_x, $src_y);

	 for ($y = 0; $y < $src_y; $y++)

	 {

	 imagecopy($new_im, $src, 0, $src_y - $y - 1, 0, $y, $src_x, 1);

	 }

	 $this->h_src = $new_im;

	 }

	 /**

	 * 水平翻转

	 *

	 * @param string $src 图片源

	 */

	 function _flipH($src)

	 {

	 $src_x = $this->getImgWidth($src);

	 $src_y = $this->getImgHeight($src);

	 $new_im = imagecreatetruecolor($src_x, $src_y);

	 for ($x = 0; $x < $src_x; $x++)

	 {

	 imagecopy($new_im, $src, $src_x - $x - 1, 0, $x, 0, 1, $src_y);

	 }

	 $this->h_src = $new_im;

	 }

	}

	

	
	$t=new ThumbHandler();

	

	$t->setSrcImg('thumbnail_1287641632.jpg');

	

	$t->setCutType(1);//这一句就OK了

	

	$t->setDstImg('2.jpg');

	

	$t->createImg(100,100);

	

	?>
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