php多功能圖片處理類分享

字號:


    本文提供的php類用于完成圖片縮放,水印添加,當(dāng)水印圖超過目標(biāo)圖片尺寸時,水印圖能自動適應(yīng)目標(biāo)圖片而縮小,當(dāng)水印圖超過目標(biāo)圖片尺寸時,水印圖能自動適應(yīng)目標(biāo)圖片而縮小,需要的朋友可以參考下
    代碼如下:
    <?php
    /**
    * 基本圖片處理,用于完成圖片縮入,水印添加
    * 當(dāng)水印圖超過目標(biāo)圖片尺寸時,水印圖能自動適應(yīng)目標(biāo)圖片而縮小
    * 水印圖可以設(shè)置跟背景的合并度
    */
    /*
    使用方法:
    自動裁切:
    程序會按照圖片的尺寸從中部裁切最大的正方形,并按目標(biāo)尺寸進(jìn)行縮略
    $t--->setSrcImg("img/test.jpg");
    $t->setCutType(1);//這一句就OK了
    $t->setDstImg("tmp/new_test.jpg");
    $t->createImg(60,60);
    手工裁切:
    程序會按照指定的位置從源圖上取圖
    $t->setSrcImg("img/test.jpg");
    $t->setCutType(2);//指明為手工裁切
    $t->setSrcCutPosition(100, 100);// 源圖起點坐標(biāo)
    $t->setRectangleCut(300, 200);// 裁切尺寸
    $t->setDstImg("tmp/new_test.jpg");
    $t->createImg(300,200);
    */
    class ThumbHandler
    {
    var $dst_img;// 目標(biāo)文件
    var $h_src; // 圖片資源句柄
    var $h_dst;// 新圖句柄
    var $h_mask;// 水印句柄
    var $img_create_quality = 100;// 圖片生成質(zhì)量
    var $img_display_quality = 80;// 圖片顯示質(zhì)量,默認(rèn)為75
    var $img_scale = 0;// 圖片縮放比例
    var $src_w = 0;// 原圖寬度
    var $src_h = 0;// 原圖高度
    var $dst_w = 0;// 新圖總寬度
    var $dst_h = 0;// 新圖總高度
    var $fill_w;// 填充圖形寬
    var $fill_h;// 填充圖形高
    var $copy_w;// 拷貝圖形寬
    var $copy_h;// 拷貝圖形高
    var $src_x = 0;// 原圖繪制起始橫坐標(biāo)
    var $src_y = 0;// 原圖繪制起始縱坐標(biāo)
    var $start_x;// 新圖繪制起始橫坐標(biāo)
    var $start_y;// 新圖繪制起始縱坐標(biāo)
    var $mask_word;// 水印文字
    var $mask_img;// 水印圖片
    var $mask_pos_x = 0;// 水印橫坐標(biāo)
    var $mask_pos_y = 0;// 水印縱坐標(biāo)
    var $mask_offset_x = 5;// 水印橫向偏移
    var $mask_offset_y = 5;// 水印縱向偏移
    var $font_w;// 水印字體寬
    var $font_h;// 水印字體高
    var $mask_w;// 水印寬
    var $mask_h;// 水印高
    var $mask_font_color = "#ffffff";// 水印文字顏色
    var $mask_font = 2;// 水印字體
    var $font_size;// 尺寸
    var $mask_position = 0;// 水印位置
    var $mask_img_pct = 50;// 圖片合并程度,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;// 圖片邊框尺寸
    var $img_border_color;// 圖片邊框顏色
    var $_flip_x=0;// 水平翻轉(zhuǎn)次數(shù)
    var $_flip_y=0;// 垂直翻轉(zhuǎn)次數(shù)
    var $cut_type=0;// 剪切類型
    var $img_type;// 文件類型
    // 文件類型定義,并指出了輸出圖片的函數(shù)
    var $all_type = array(
    "jpg" => array("output"=>"imagejpeg"),
    "gif" => array("output"=>"imagegif"),
    "png" => array("output"=>"imagepng"),
    "wbmp" => array("output"=>"image2wbmp"),
    "jpeg" => array("output"=>"imagejpeg"));
    /**
    * 構(gòu)造函數(shù)
    */
    function ThumbHandler()
    {
    $this->mask_font_color = "#ffffff";
    $this->font = 2;
    $this->font_size = 12;
    }
    /**
    * 取得圖片的寬
    */
    function getImgWidth($src)
    {
    return imagesx($src);
    }
    /**
    * 取得圖片的高
    */
    function getImgHeight($src)
    {
    return imagesy($src);
    }
    /**
    * 設(shè)置圖片生成路徑
    *
    * @param string $src_img 圖片生成路徑
    */
    function setSrcImg($src_img, $img_type=null)
    {
    if(!file_exists($src_img))
    {
    die("圖片不存在");
    }
    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函數(shù)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("圖片源為空");
    }
    $this->h_src = @ImageCreateFromString($src);
    $this->src_w = $this->getImgWidth($this->h_src);
    $this->src_h = $this->getImgHeight($this->h_src);
    }
    /**
    * 設(shè)置圖片生成路徑
    *
    * @param string $dst_img 圖片生成路徑
    */
    function setDstImg($dst_img)
    {
    $arr = explode('/',$dst_img);
    $last = array_pop($arr);
    $path = implode('/',$arr);
    $this->_mkdirs($path);
    $this->dst_img = $dst_img;
    }
    /**
    * 設(shè)置圖片的顯示質(zhì)量
    *
    * @param string $n 質(zhì)量
    */
    function setImgDisplayQuality($n)
    {
    $this->img_display_quality = (int)$n;
    }
    /**
    * 設(shè)置圖片的生成質(zhì)量
    *
    * @param string $n 質(zhì)量
    */
    function setImgCreateQuality($n)
    {
    $this->img_create_quality = (int)$n;
    }
    /**
    * 設(shè)置文字水印
    *
    * @param string $word 水印文字
    * @param integer $font 水印字體
    * @param string $color 水印字體顏色
    */
    function setMaskWord($word)
    {
    $this->mask_word .= $word;
    }
    /**
    * 設(shè)置字體顏色
    *
    * @param string $color 字體顏色
    */
    function setMaskFontColor($color="#ffffff")
    {
    $this->mask_font_color = $color;
    }
    /**
    * 設(shè)置水印字體
    *
    * @param string|integer $font 字體
    */
    function setMaskFont($font=2)
    {
    if(!is_numeric($font) && !file_exists($font))
    {
    die("字體文件不存在");
    }
    $this->font = $font;
    }
    /**
    * 設(shè)置文字字體大小,僅對truetype字體有效
    */
    function setMaskFontSize($size = "12")
    {
    $this->font_size = $size;
    }
    /**
    * 設(shè)置圖片水印
    *
    * @param string $img 水印圖片源
    */
    function setMaskImg($img)
    {
    $this->mask_img = $img;
    }
    /**
    * 設(shè)置水印橫向偏移
    *
    * @param integer $x 橫向偏移量
    */
    function setMaskOffsetX($x)
    {
    $this->mask_offset_x = (int)$x;
    }
    /**
    * 設(shè)置水印縱向偏移
    *
    * @param integer $y 縱向偏移量
    */
    function setMaskOffsetY($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;
    }
    /**
    * 設(shè)置圖片合并程度
    *
    * @param integer $n 合并程度
    */
    function setMaskImgPct($n)
    {
    $this->mask_img_pct = (int)$n;
    }
    /**
    * 設(shè)置文字合并程度
    *
    * @param integer $n 合并程度
    */
    function setMaskTxtPct($n)
    {
    $this->mask_txt_pct = (int)$n;
    }
    /**
    * 設(shè)置縮略圖邊框
    *
    * @param (類型) (參數(shù)名) (描述)
    */
    function setDstImgBorder($size=1, $color="#000000")
    {
    $this->img_border_size = (int)$size;
    $this->img_border_color = $color;
    }
    /**
    * 水平翻轉(zhuǎn)
    */
    function flipH()
    {
    $this->_flip_x++;
    }
    /**
    * 垂直翻轉(zhuǎn)
    */
    function flipV()
    {
    $this->_flip_y++;
    }
    /**
    * 設(shè)置剪切類型
    *
    * @param (類型) (參數(shù)名) (描述)
    */
    function setCutType($type)
    {
    $this->cut_type = (int)$type;
    }
    /**
    * 設(shè)置圖片剪切
    *
    * @param integer $width 矩形剪切
    */
    function setRectangleCut($width, $height)
    {
    $this->fill_w = (int)$width;
    $this->fill_h = (int)$height;
    }
    /**
    * 設(shè)置源圖剪切起始坐標(biāo)點
    *
    * @param (類型) (參數(shù)名) (描述)
    */
    function setSrcCutPosition($x, $y)
    {
    $this->src_x = (int)$x;
    $this->src_y = (int)$y;
    }
    /**
    * 創(chuàng)建圖片,主函數(shù)
    * @param integer $a 當(dāng)缺少第二個參數(shù)時,此參數(shù)將用作百分比,
    * 否則作為寬度值
    * @param integer $b 圖片縮放后的高度
    */
    function createImg($a, $b=null)
    {
    $num = func_num_args();
    if(1 == $num)
    {
    $r = (int)$a;
    if($r < 1)
    {
    die("圖片縮放比例不得小于1");
    }
    $this->img_scale = $r;
    $this->_setNewImgSize($r);
    }
    if(2 == $num)
    {
    $w = (int)$a;
    $h = (int)$b;
    if(0 == $w)
    {
    die("目標(biāo)寬度不能為0");
    }
    if(0 == $h)
    {
    die("目標(biāo)高度不能為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();
    $this->_output();
    // 釋放
    if(imagedestroy($this->h_src) && imagedestroy($this->h_dst))
    {
    Return true;
    }
    else
    {
    Return false;
    }
    }
    /**
    * 生成水印,調(diào)用了生成水印文字和水印圖片兩個方法
    */
    function _createMask()
    {
    if($this->mask_word)
    {
    // 獲取字體信息
    $this->_setFontInfo();
    if($this->_isFull())
    {
    die("水印文字過大");
    }
    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)
    {
    $this->_loadMaskImg();//加載時,取得寬高
    if($this->_isFull())
    {
    // 將水印生成在原圖上再拷
    $this->_createMaskImg($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
    {
    // 創(chuàng)建新圖并拷貝
    $this->h_dst = imagecreatetruecolor($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, $this->copy_h);
    }
    }
    /**
    * 畫邊框
    */
    function _drawBorder()
    {
    if(!empty($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,
    $this->mask_word);
    }
    }
    /**
    * 生成水印圖
    */
    function _createMaskImg($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);
    }
    /**
    * 加載水印圖
    */
    function _loadMaskImg()
    {
    $mask_type = $this->_getImgType($this->mask_img);
    $this->_checkValid($mask_type);
    // file_get_contents函數(shù)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("水印圖片為空");
    }
    $this->h_mask = ImageCreateFromString($src);
    $this->mask_w = $this->getImgWidth($this->h_mask);
    $this->mask_h = $this->getImgHeight($this->h_mask);
    }
    /**
    * 圖片輸出
    */
    function _output()
    {
    $img_type = $this->img_type;
    $func_name = $this->all_type[$img_type]['output'];
    if(function_exists($func_name))
    {
    // 判斷瀏覽器,若是IE就不發(fā)送頭
    if(isset($_SERVER['HTTP_USER_AGENT']))
    {
    $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
    if(!preg_match('/^.*MSIE.*)$/i',$ua))
    {
    header("Content-type:$img_type");
    }
    }
    $func_name($this->h_dst, $this->dst_img, $this->img_display_quality);
    }
    else
    {
    Return false;
    }
    }
    /**
    * 分析顏色
    *
    * @param string $color 十六進(jìn)制顏色
    */
    function _parseColor($color)
    {
    $arr = array();
    for($ii=1; $ii<strlen function="" return="" this-="">_isFull())
    {
    switch($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:
    // 默認(rèn)將水印放到右下,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:
    // 默認(rèn)將水印放到右下,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 - $this->img_border_size;
    break;
    }
    }
    }
    /**
    * 設(shè)置字體信息
    */
    function _setFontInfo()
    {
    if(is_numeric($this->font))
    {
    $this->font_w = imagefontwidth($this->font);
    $this->font_h = imagefontheight($this->font);
    // 計算水印字體所占寬高
    $word_length = strlen($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]);
    }
    }
    /**
    * 設(shè)置新圖尺寸
    *
    * @param integer $img_w 目標(biāo)寬度
    * @param integer $img_h 目標(biāo)高度
    */
    function _setNewImgSize($img_w, $img_h=null)
    {
    $num = func_num_args();
    if(1 == $num)
    {
    $this->img_scale = $img_w;// 寬度作為比例
    $this->fill_w = round($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;
    // 源文件起始坐標(biāo)
    $this->src_x = 0;
    $this->src_y = 0;
    $this->copy_w = $this->src_w;
    $this->copy_h = $this->src_h;
    // 目標(biāo)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("圖片邊框過大,已超過了圖片的寬度");
    }
    $rate_w = $this->src_w/$fill_w;
    $rate_h = $this->src_h/$fill_h;
    switch($this->cut_type)
    {
    case 0:
    // 如果原圖大于縮略圖,產(chǎn)生縮小,否則不縮小
    if($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;
    // 目標(biāo)尺寸
    $this->dst_w = $this->fill_w + $this->img_border_size*2;
    $this->dst_h = $this->fill_h + $this->img_border_size*2;
    break;
    // 自動裁切
    case 1:
    // 如果圖片是縮小剪切才進(jìn)行操作
    if($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;
    }
    // 目標(biāo)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;
    // 目標(biāo)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;
    }
    }
    // 目標(biāo)文件起始坐標(biāo)
    $this->start_x = $this->img_border_size;
    $this->start_y = $this->img_border_size;
    }
    /**
    * 檢查水印圖是否大于生成后的圖片寬高
    */
    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;
    }
    /**
    * 檢查水印圖是否超過原圖
    */
    function _checkMaskValid()
    {
    if( $this->mask_w + $this->mask_offset_x > $this->src_w
    || $this->mask_h + $this->mask_offset_y > $this->src_h)
    {
    die("水印圖片尺寸大于原圖,請縮小水印圖");
    }
    }
    /**
    * 取得圖片類型
    *
    * @param string $file_path 文件路徑
    */
    function _getImgType($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,不能取得文件類型!");
    }
    }
    /**
    * 檢查圖片類型是否合法,調(diào)用了array_key_exists函數(shù),此函數(shù)要求
    * php版本大于4.1.0
    *
    * @param string $img_type 文件類型
    */
    function _checkValid($img_type)
    {
    if(!array_key_exists($img_type, $this->all_type))
    {
    Return false;
    }
    }
    /**
    * 按指定路徑生成目錄
    *
    * @param string $path 路徑
    */
    function _mkdirs($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);
    }
    }
    }
    }
    /**
    * 垂直翻轉(zhuǎn)
    *
    * @param string $src 圖片源
    */
    function _flipV($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;
    }
    /**
    * 水平翻轉(zhuǎn)
    *
    * @param string $src 圖片源
    */
    function _flipH($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;
    }
    }
    ?>
    函數(shù)描述及例子
    使用實例:
    代碼如下:
    < ?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    $t->setSrcImg("img/test.jpg");
    $t->setDstImg("tmp/new_test.jpg");
    $t->setMaskImg("img/test.gif");
    $t->setMaskPosition(1);
    $t->setMaskImgPct(80);
    $t->setDstImgBorder(4,"#dddddd");
    // 指定縮放比例
    $t->createImg(300,200);
    ?>
    代碼如下:
    <?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    // 基本使用
    $t--->setSrcImg("img/test.jpg");
    $t->setMaskWord("test");
    $t->setDstImgBorder(10,"#dddddd");
    // 指定縮放比例
    $t->createImg(50);
    ?>
    代碼如下:
    <?php
    equire_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    // 基本使用
    $t--->setSrcImg("img/test.jpg");
    $t->setMaskWord("test");
    // 指定固定寬高
    $t->createImg(200,200);
    ?>
    代碼如下:
    <?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    $t--->setSrcImg("img/test.jpg");
    $t->setDstImg("tmp/new_test.jpg");
    $t->setMaskWord("test");
    // 指定固定寬高
    $t->createImg(200,200);
    ?>
    代碼如下:
    <?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    $t--->setSrcImg("img/test.jpg");
    // 指定字體文件地址
    $t->setMaskFont("c:/winnt/fonts/arial.ttf");
    $t->setMaskFontSize(20);
    $t->setMaskFontColor("#ffff00");
    $t->setMaskWord("test3333333");
    $t->setDstImgBorder(99,"#dddddd");
    $t->createImg(50);
    ?>
    代碼如下:
    <?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    $t->setSrcImg("img/test.jpg");
    $t->setMaskOffsetX(55);
    $t->setMaskOffsetY(55);
    $t->setMaskPosition(1);
    //$t->setMaskPosition(2);
    //$t->setMaskPosition(3);
    //$t->setMaskPosition(4);
    $t->setMaskFontColor("#ffff00");
    $t->setMaskWord("test");
    // 指定固定寬高
    $t->createImg(50);
    ?>
    代碼如下:
    <?php
    require_once('lib/thumb.class.php');
    $t = new ThumbHandler();
    $t->setSrcImg("img/test.jpg");
    $t->setMaskFont("c:/winnt/fonts/simyou.ttf");
    $t->setMaskFontSize(20);
    $t->setMaskFontColor("#ffffff");
    $t->setMaskTxtPct(20);
    $t->setDstImgBorder(10,"#dddddd");
    $text = "中文";
    $str = mb_convert_encoding($text, "UTF-8", "gb2312");
    $t->setMaskWord($str);
    $t->setMaskWord("test");
    // 指定固定寬高
    $t->createImg(50);
    ?> </strlen>