Home Backend Development PHP Tutorial Code about php multifunctional image processing class

Code about php multifunctional image processing class

Jun 15, 2018 pm 03:47 PM

The PHP class provided in this article is used to complete image scaling and watermark adding. When the watermark image exceeds the target image size, the watermark image can automatically adapt to the target image and shrink. When the watermark image exceeds the target image size, the watermark image can automatically adapt. The target image is reduced, friends in need can refer to the following

<?php    
/**   
*  基本图片处理,用于完成图片缩入,水印添加   
*  当水印图超过目标图片尺寸时,水印图能自动适应目标图片而缩小   
*  水印图可以设置跟背景的合并度  
*/    
/*   
使用方法:   
    自动裁切:   
    程序会按照图片的尺寸从中部裁切最大的正方形,并按目标尺寸进行缩略   
    $t--->setSrcImg("img/test.jpg");   
    $t->setCutType(1);//这一句就OK了   
    $t->setDstImg("tmp/new_test.jpg");   
    $t->createImg(60,60);   
    手工裁切:   
    程序会按照指定的位置从源图上取图   
    $t->setSrcImg("img/test.jpg");   
    $t->setCutType(2);//指明为手工裁切   
    $t->setSrcCutPosition(100, 100);// 源图起点坐标   
    $t->setRectangleCut(300, 200);// 裁切尺寸   
    $t->setDstImg("tmp/new_test.jpg");   
    $t->createImg(300,200);   
*/    
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 = &#39;&#39;;    
        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)    
    {    
        $arr  = explode(&#39;/&#39;,$dst_img);    
        $last = array_pop($arr);    
        $path = implode(&#39;/&#39;,$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 = &#39;&#39;;    
        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][&#39;output&#39;];    
        if(function_exists($func_name))    
        {    
            // 判断浏览器,若是IE就不发送头    
            if(isset($_SERVER[&#39;HTTP_USER_AGENT&#39;]))    
            {    
                $ua = strtoupper($_SERVER[&#39;HTTP_USER_AGENT&#39;]);    
                if(!preg_match(&#39;/^.*MSIE.*\)$/i&#39;,$ua))    
                {    
                    header("Content-type:$img_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; $ii<strlen function="" return="" this-="">_isFull())    
        {    
            switch($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)    
    {    
        $adir = explode(&#39;/&#39;,$path);    
        $dirlist = &#39;&#39;;    
        $rootdir = array_shift($adir);    
        if(($rootdir!=&#39;.&#39;||$rootdir!=&#39;..&#39;)&&!file_exists($rootdir))    
        {    
            @mkdir($rootdir);    
        }    
        foreach($adir as $key=>$val)    
        {    
            if($val!=&#39;.&#39;&&$val!=&#39;..&#39;)    
            {    
                $dirlist .= "/".$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;    
    }    
}    
?>
Copy after login

Function description and examples
Usage examples:

< ?php    
require_once(&#39;lib/thumb.class.php&#39;);    
$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");    
// 指定缩放比例    
$t->createImg(300,200);    
?>
Copy after login
<?php    
require_once(&#39;lib/thumb.class.php&#39;);    

$t = new ThumbHandler();    

// 基本使用    
$t--->setSrcImg("img/test.jpg");    
$t->setMaskWord("test");    
$t->setDstImgBorder(10,"#dddddd");    

// 指定缩放比例    
$t->createImg(50);    
?>
Copy after login
<?php    
equire_once(&#39;lib/thumb.class.php&#39;);    

$t = new ThumbHandler();    

// 基本使用    
$t--->setSrcImg("img/test.jpg");    
$t->setMaskWord("test");    

// 指定固定宽高    
$t->createImg(200,200);    
?>
Copy after login
<?php    
require_once(&#39;lib/thumb.class.php&#39;);    
$t = new ThumbHandler();    
$t--->setSrcImg("img/test.jpg");    
$t->setDstImg("tmp/new_test.jpg");    
$t->setMaskWord("test");    
// 指定固定宽高    
$t->createImg(200,200);    
?>
Copy after login
<?php    
require_once(&#39;lib/thumb.class.php&#39;);    
$t = new ThumbHandler();    
$t--->setSrcImg("img/test.jpg");    
// 指定字体文件地址    
$t->setMaskFont("c:/winnt/fonts/arial.ttf");    
$t->setMaskFontSize(20);    
$t->setMaskFontColor("#ffff00");    
$t->setMaskWord("test3333333");    
$t->setDstImgBorder(99,"#dddddd");    
$t->createImg(50);   
?>
Copy after login
<?php    
require_once(&#39;lib/thumb.class.php&#39;);    

$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");    

// 指定固定宽高    
$t->createImg(50);    
?>
Copy after login
<?php    
require_once(&#39;lib/thumb.class.php&#39;);    

$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");    

// 指定固定宽高    
$t->createImg(50);    
?> </strlen>
Copy after login

The above is the entire content of this article, I hope it will be helpful to everyone's learning , please pay attention to the PHP Chinese website for more related content!

Related recommendations:

How to use pcntl and libevent in PHP to implement the Timer function

The above is the detailed content of Code about php multifunctional image processing class. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How does session hijacking work and how can you mitigate it in PHP? How does session hijacking work and how can you mitigate it in PHP? Apr 06, 2025 am 12:02 AM

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

What are Enumerations (Enums) in PHP 8.1? What are Enumerations (Enums) in PHP 8.1? Apr 03, 2025 am 12:05 AM

The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.

Describe the SOLID principles and how they apply to PHP development. Describe the SOLID principles and how they apply to PHP development. Apr 03, 2025 am 12:04 AM

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

How to debug CLI mode in PHPStorm? How to debug CLI mode in PHPStorm? Apr 01, 2025 pm 02:57 PM

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

How to send a POST request containing JSON data using PHP's cURL library? How to send a POST request containing JSON data using PHP's cURL library? Apr 01, 2025 pm 03:12 PM

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...

How to automatically set permissions of unixsocket after system restart? How to automatically set permissions of unixsocket after system restart? Mar 31, 2025 pm 11:54 PM

How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...

See all articles